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  • rtp
    replied
    Can't Connect, Can't Pair issues

    There's actually one more 'simpler' case before digging into the 'less fun' ones. The Bluetooth range is relatively low, and the combination of the use of Low Energy BT, the controller transmit power and your phone may cause some disconnections with messages of disconnected or unable to connect. For these types of issues, do two things:
    1. Set your phone very close to the antenna on the side of the controller (drive side of motor) - like on a pedal or resting in the V of the frame if it'll stay there. Use the Scan button on the mobile app and the controller (with bike/motor powered on) will display a device starting with VESC-<something> and possibly other BLE or Bluetooth devices (especially if you have for example, any smart home devices nearby..). Click on Connect. Note that the app will download several things from the controller - not only values but also the ride dashboard, and you will see a green message box and message at the bottom of the screen showing the connection succeeded and a few messages about loading. Until the load completes, the mobile app won't have the ride screen showing temperature display, etc. - so give it a few seconds at least.

    2. Bluetooth Antenna positioning. As shipped, your antenna may be 'tucked' in tightly against the controller. This is ok for some controller/phone combinations but not for all. You can see the antenna in the below pic.

    What you WANT to do, is carefully pull the tip of the antenna (the thin part on the right, not the grommet through the controller casing..) so that it points outwards a bit, like the next picture:

    This WILL help with connection range. How much may depend on your specific controller and phone, but it does help.

    Ok, so none of these things worked, still can't connect or am seeing the 'unable to pair' message...
    Click image for larger version  Name:	VESCCantPairShort.png Views:	0 Size:	102.3 KB ID:	146438

    For unable to connect (not the pairing message), always first try both power cycling the bike as well as the previously shown antenna positioning and by holding the phone closer to the controller on sitting a pedal. If you still can't connect, open a support ticket with Luna.
    For the unable to pair issue, also always refer to the latest Ludi controller documentation here: https://electricbike.com/forum/forum...-documentation
    as it's possible a simpler way may exist in the future.

    You're going to have to remove the controller, or remove it at least far enough to connect a micro-USB (not USB-C, not USB-A, micro-USB) cable to the controller, and whatever is on your PC end, usually a USB-A or USB-C connection), so something like this cable for most:
    https://www.amazon.com/AmazonBasics-.../dp/B0711PVX6Z

    You're also going to need the desktop VESC tool. At some point, the Luna Ludi changes will be merged into the main repository, but until then this is a critical note - do not attempt to use desktop VESC tool to change any settings, only use for firmware update and log analysis (until Ludi controller changes are merged at the very least) as the general desktop VESC builds do not yet know about the unique/additional params and settings of the Ludi v2 controller.

    You can get that here, although again, check the Ludi manual in case a special build is provided in the future by Luna:
    https://vesc-project.com/vesc_tool
    Note the above has links for Windows and Linux. There is a macOS version also available if you know where to get it, but the same caveat applies already mentioned - until Ludi controller changes are merged, only for uploading firmware and log analysis only.

    You will also need the Ludi V2 M600 firmware file. This is linked to in the Ludi docs, and this is the latest one as of this writing, but if there is a newer one linked in the manual - use that. https://public.3.basecamp.com/p/WmBd...6A6eQjbQsYTEQx

    Once you have your cable, the firmware file downloaded to your system, and the VESC desktop app, go ahead and pull the controller per the prior writeup, or at least to the point where you can connect the micro-USB end of the cable to the controller per the below (micro-USB on the far right above the white connectors).
    Click image for larger version  Name:	LudiV2Connectors.jpg Views:	0 Size:	316.8 KB ID:	146439
    Power does NOT need to be on to the bike if leaving it all connected - the USB connection will provide enough power for what's needed here.

    Once the cable is connected on both ends, the simplest way to connect is the use the 'auto connect' option in VESC.
    NOTE: My VESC screens may be slightly different than yours - I'm on a mac and in dark mode - no reason for concern..
    Click image for larger version  Name:	VESCAutoconnect.jpg Views:	0 Size:	140.6 KB ID:	146444 This has worked for me every time, but if not, you can go to the 'Connections' menu item and cycle through the dropdowns in the connection menu, which are a combination of BLE and serial/COM port type of device list... if doing it manually, you'll have to cycle through any devices listed in the device list dropdown and hit the Connect icon in the upper right (outlined in red) on each until a connection is established. Again, auto-connect will probably work, so use it.. ;)

    Note the controller will show at least one LED lit when connected to the PC via micro-USB - this is normal. Going from memory but I think it's one solid green and one flashing RED but will update next time it's apart unless marcos cares to chime in here.. Click image for larger version  Name:	VESCManualConnection.jpg Views:	0 Size:	100.7 KB ID:	146445 In the future once Ludi controller code and firmware is merged with mainline VESC tool, you could simply go in and reset the 'Paired' flag on the controller, but this may or may not work at the moment so it is NOT recommended.

    Instead, we'll load the Ludi M600 firmware file into VESC (after connecting). Click on firmware on the left hand side, and you'll note a bunch of things listed under 'included files' - none of which resemble the Ludi M600 - this should be listed in the future once all code merges are completed.
    So instead, click the center tab for 'Custom File' , navigate to where you saved the LudiV2 M600 firmware file, select it and click ok/open.
    Click image for larger version  Name:	VESCLoadM600FirmwareFile.jpg Views:	0 Size:	111.3 KB ID:	146443
    Once the firmware file is loaded, we can flash it to the connected controller by selecting the 'use' radio button next to the M600 firmware file and then pressing the down arrow to download to the controller. Relevant fields/things to check are shown in the image below outlined in red.
    Click image for larger version  Name:	VESCLoadFirmware.jpg Views:	0 Size:	109.9 KB ID:	146462 This will take a little bit but not long, and the firmware upload status bar will move then the firmware will complete. Wait a couple of minutes or so for sanity to make sure all writes have completed and the controller will reboot itself to update to the new firmware, then hit the 'disconnect' icon and you can unplug the controller micro-USB. Reloading firmware will automatically clear the 'paired' flag - which you can reconnect and confirm if you'd like (it's not required) by reconnecting and checking the General / Paired Status which should now read as False. Again - do not get tempted and try to alter any other settings with Desktop VESC - firmware and log analysis only for now..

    Click image for larger version  Name:	VescPairingFlagWeb.jpg Views:	0 Size:	187.0 KB ID:	146463
    At this point, you can go ahead and put the controller back in the motor. Once powered back up, the Bafang display will probably read Error 08 (encoder needs to be calibrated), which is OK - but make sure you can SCAN AND CONNECT (not Pair) at this point and both see and connect to the controller.

    Once you do, go into bike cfg, lift the rear wheel and do the encoder detection process outlined previously and referenced in the Ludi V2 manual, and you should now be good to go! (and yeah, I still wouldn't pair, but if you do, SAVE the screenshot of the paired info with device ID so next time, you're not taking your controller out to reset it! :) )
    Attached Files
    Last edited by rtp; 01-10-2022, 03:51 PM.

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  • rtp
    replied
    Controller Removal, Replacement or Accessing the Controller micro-USB port
    Disclaimer: I don't work for Luna and this is not an official Luna writeup. Luna may provide alternate methods for either of these (and I welcome any corrections or better ways to do it) - information provided is at your own risk. This information should not be construed as definitive and corrections or improvements are welcome.

    Why would I do this?
    Well - hopefully you will never need to, but this is relevant as well in the case that Luna later sells the LudiV2 controller to X1 owners, standalone, if Luna determines you have a bad controller, or if you've managed to get the 'unable to connect' or 'unable to pair' issue covered in the prior post.

    Removal or Partial Removal of the controller
    Note - it's possible to get to the USB port without completely removing the controller or chainring, etc. However, it's a pain in the ass, as the chainring will block at least one or two of the torx screws holding the controller in, and it wouldn't be 'great' rounding off the screw heads, so - do what you'd like, but this is how I choose to do it.

    The best way to do this is with the bike on it's bars and seat, with the motor as close to eye level standing on kneeling as possible for comfort. Consider your controls and display and either put some padding down, rotate out of the way, or use some small boxes or something to allow the bike to sit solidly upside down on the seat and handlebars. Alternately if you can lift the bike high enough safely, that's also an option.

    Lock the rear derailleur by levering the cage forward and pushing the pin into place, so you have slack in the chain, and remove the chain from the chainring. Alternately you could pop the master link off the chain and remove the chain - we just want it out of our way.

    Turn off the power to the bike. Pressing the chrome button on the side of the bike is OK (depressed/not flush is supplying power, button flush with bezel = powered off), but removing the battery is better. Even if later connecting the the micro-USB port, power will be supplied to the controller from the USB port and battery power is NOT needed until done with everything.

    Use an Allen wrench (will check size, think it's 4mm) to remove the 4 chainring bolts. There are round nuts on the backside - hold them with a finger or a chainring bolt tool and make sure you don't lose them. Set the 4 chainring screws and nuts aside somewhere safe.

    You can choose to leave the chainring on and slide it out of the way, and kind of access the 4 screws holding the controller in, or remove the chainring (my preference).
    Here's a pic showing both the external BT antenna and 3 of the 4 screws that will need to be removed - and why I choose the remove the chain and chainring - the screw on the upper left is difficult to get on straight with the chainring in place, and the 4th is in the lower left behind the chainring.
    Click image for larger version  Name:	BT-Antenna-external.jpg Views:	0 Size:	233.9 KB ID:	146317

    Removing the chainring is a bit 'fiddly' - you do not need to remove the cranks, but you want to basically 'make an X' with the spider once the chainring bolts are removed, then rotate the biggest open areas of the chainring to go over the spider arms. Turn the chainring 90* at a time and let it 'hang' and then rotate it until you find 'the spot.'

    Once removed, it looks like this (I already pulled the controller torx screws out, IIRC they're T10 torx)
    Click image for larger version  Name:	RemovingController copy.jpg Views:	0 Size:	276.1 KB ID:	146322

    Be careful on removal as there is a gasket under the controller and you do not want to break it.
    If it's 'stuck', use a wide blade once the screws are removed to pry slightly sideways. You can but don't need to, remove the plastic bash guard if you need a little more room.

    Click image for larger version  Name:	ControllerRemoval1.jpg Views:	0 Size:	2.86 MB ID:	146323

    The alternative (not removing chainring is 'not much room':
    Click image for larger version  Name:	ControllerNotMuchRoom copy.jpg Views:	0 Size:	112.4 KB ID:	146324

    The micro-USB connector is behind the white connectors on the right.
    Click image for larger version  Name:	LudiV2ConnectorsWeb.jpg Views:	0 Size:	225.4 KB ID:	146325
    NOTE: There are 2 controller revisions currently that are functionally equivalent with either 2 capacitors or 4 capacitors (brown cylinders at top of pic).

    Now, for fixing the can't connect or pair issue, you can either TRY to get a micro-USB cable onto the USB connector, but again, it's tight...or remove the controller. (The USB connection is enough to power the controller during that process).
    Click image for larger version  Name:	ControllerRemoval1.jpg Views:	0 Size:	2.86 MB ID:	146326
    Click image for larger version  Name:	ControllerRemoval3.jpg Views:	0 Size:	233.0 KB ID:	146327

    You'll want to unplug the connectors for removal, or may be able to get a USB cable plugged in.
    If removing the cables, note 2 of the 3 white cables are 6 pin, smaller, and note which one has a marking on it to make sure the right plugs go back in the right place. If it doesn't, make one yourself to ensure the right cable goes back in the right place.

    Note that the white cable connectors DO have small plastic locks on them - do NOT just pull on the cables, or you may well be repairing a harness that has tiny pins inside the connectors! The phase wire and power connectors (blue, yellow, green and the red and black) should come undone easily enough - but use the connector and don't pull on the wires.

    You can see the connector 'locks' on the two smaller plugs - the large one has a 'lock' as well - a small screwdriver, pick, or ideally a plastic 'spudger' can help if unable to depress with your fingers.
    Click image for larger version  Name:	ControllerRemoval.jpg Views:	0 Size:	156.4 KB ID:	146328

    Controller Replacement
    If simply replacing the controller, it's out at this point. Installation is pretty much the same in reverse, but it's highly recommended to connect the harnesses from the innermost (right above the micro-USB port) first, then the smaller cable with the blue mark on it, and then the larger white connector, and make sure the cable 'locks' re-engage. At this point, it's not a bad idea to coat the outside of the plug ends with some di-electric grease, and as the controller to motor gasket is seemingly rubberized, I gave a light coating of silicone grease. Note the controller gasket has at least one locating ping (to the right of my thumb) - make sure this is sitting down on the pin before replacement and tightening the controller back up so the gasket doesn't get pinched.

    On power-up from controller replacement, (battery in, power switch on side of bike depressed, press power on...) you will very likely get an 'Error 08' on the (Bafang) controller screen. This means the crank or something moved the magnet or for a new controller, it needs to calibrate to determine motor and magnet position. This is normal.

    This is also covered in the Ludi controller documentation, linked to from here: https://electricbike.com/forum/forum...-documentation

    Connect the mobile app (must be Luna mobile app, not from Play store at this point in time..) to the controller, go into Bike Cfg, raise the rear wheel off the ground so the wheel (and cranks) can spin freely, then select the 'Offset Correction' button. This will move the motor a little bit for 15-30 seconds or so and update the offset value.

    Click image for larger version  Name:	LudiEncoderRecalibration.jpg Views:	0 Size:	50.9 KB ID:	146329

    Once the motor stops moving, and the # updates, note this value for sanity (= write it down), write the settings to the controller, then disconnect on the app, and power the bike down from the controller. I also then depress the power button on the side of the bike, although it may or may not be needed.

    Power the bike back on and the 'Error 08' should not display on the Bafang controller. The bike is now ready to ride again. If you are still getting 08, connect via the app, go to bike cfg and manually enter the # from the prior offset correction process, or raise the rear wheel
    again an repeat, and make sure to write settings. Note values may vary but should be within a few degrees if running the offset correction routine several times - this is ok.

    See next post for addressing the 'can't connect' or 'can't pair' issue.
    Last edited by rtp; 01-07-2022, 06:26 PM.

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  • rtp
    replied
    The 'Unable to Pair or Connect' Problem
    Disclaimer:
    I don't work for Luna and this is not an official Luna writeup. Luna may provide alternate methods for either of these (and I welcome any corrections or better ways to do it) - information provided is at your own risk. This information should not be construed as definitive and corrections or improvements are welcome.

    What is the 'unable to pair or connect' issue and what causes it?


    The controller uses Low Energy Bluetooth (BLE) for communication with the mobile app. To an extent, the controller BLE acts like a server and the mobile app is the client.
    However - there may only be a single connection at a time, and a maximum of one device (easily) paired to the controller.
    It's also important to note - you do not NEED to pair to the controller at all and then any device within range running the mobile app can scan and connect (without pairing).

    So, for example, if you have multiple phones, and you pair one of them to the controller, no other device can pair or even scan/connect to the controller, and you will get an error like the one below once attempted: (Note - this one is showing a pair attempt, but a nearly identical message will show up on a simple connect attempt as well)
    Click image for larger version  Name:	VESCCantPairShort.png Views:	0 Size:	102.3 KB ID:	146310

    It also seems to be the case the actual pairing is done at the 'app' level, as in if you install the Luna/VESC mobile app and pair, then uninstall the app, the controller may still believe it's paired, but a subsequent new install of the app still may be unable to scan and connect, or pair, and you may still see the message above.

    I hit this issue when I had bought a cheap Android phone and we hit the 64 vs 32 bit app issue, and returned the phone for another. I did actually unpair from the first before scanning from the new phone, but 'something' happened in there and I still wound up with the message above. As it's not 'one click' to undo this situation, at this point I recommend not pairing at all, and just scan and connect at each power on. Once there's a new app/firmware update, I'll probably go ahead and pair assuming I have a bit of time on my hands, then upgrade, to make sure pairing remains across upgrades etc. before considering permanently pairing to my phone. YMMV.

    There is a boolean (True or False) flag in the controller for pairing, and essentially if it's paired, it won't respond to any connection attempts from other devices other than the paired device, thus making 'other devices' unable to connect. This is technically good for security (your friend can't connect to your bike and change settings on you), but considering the limited range of the BLE connection and the pain in the event you hit the 'unable to connect or pair' issue, well - yeah, I'm not going to pair my own phone at this point.

    Flag shown in desktop VESC tool (not needed at this point, just for information)
    Click image for larger version  Name:	VescPairingFlag.jpg Views:	0 Size:	179.2 KB ID:	146311

    How do you fix it?
    Three ways:
    1. If you still have the original device, you can unpair it to allow other devices to connect, but first go to the pairing info screen and screenshot it or carefully write down the UUID of the controller, as I have seen issues in unpairing not being successful, leaving no devices able to scan and connect.
    2. Add the correct UUID manually to the <unable to connect | pair> device. This will allow the second device to connect (possibly pair - uncertain, but connection is the key part here..). This is also why I recommend screenshooting or writing down the controller UUID if you DO pair with any device, even if you later unpair it - this will let you back in by adding the UUID manually.
    3. If none of the first two options are available for whatever reason, the final path is to reset the flag manually via the USB connection. This is not the USB connector on the Bafang display as that's not connected back to the controller but basically a 5v port, and requires removing the controller to connect a micro-usb cable to the connector on the controller, and either resetting the flag via the Luna version of the VESC tool desktop, or reflashing the Luna M600 Ludiv2 firmware from the desktop Luna VESC tool.

    Will cover the details of #3 in the next posts.
    Last edited by rtp; 01-07-2022, 01:48 PM.

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  • rtp
    replied
    Round 2 modifications inbound
    Waiting for some things to arrive, some of which I waffled on for some time.
    Just noting that in some cases, it's not a 'need' - I like to tinker and try things until I get to 'this is how I want it.' Out of the box, the Ludi X2 is pretty solid, but gotta see what I like more/less as I thinker and accumulate hopefully not too many 'extra parts' along the way. ;) Did the same for on and off-road motorcycles, cars, etc., so it's time for the X2 now.. ;)

    I've got the following coming inbound at this point:
    1. Brakes - I expect eventually I may convert to other-than-Guide brakes, but for now I don't 'need' them, so let's see how they do over time first.
    a. I have a rear Hope 200mm rotor coming and 20mm offset adapter - this is pretty much for grins at this point, but I've boiled brake fluid on the street and on track before in cars and motorcycles (street and off-road for bikes), so I'm just gonna go with - it won't hurt anything.
    b. I have a set of 'deslackinators' coming to remove the awful slack/play in the levers. I dig the levers themselves well enough, now set up for 1 finger braking, but they 'should' have an adjuster to bring the levers in closer to the handle. Cheap enough to try 'em and see at $28 or so, although one of these days I'll get a 3D printer....

    2. Cockpit / Controls
    Keeping the Luna bar for now until rest is sorted, as it's pretty close for me ergo-wise, but still messing with controls.
    a. SRAM matchmaker clamps pair - for $50 for the pair of 'em, it'll give me a bit more flexibility on control positioning and clean the bar up a bit. I'll probably wind up with a matchmaker dropper lever as well. I'm unlikely to keep running SRAM drivetrain as it wears out, but will probably have the SRAM brakes for a while, and can always get or make adapters in the future if need be (e.g. Shimano Linkglide if it ever comes out for real, Box, whatever...)
    b. Mirrors suck, at least on anything that gets dirty in tight stuff on occasion. But for some trails and road riding, gotta have at least one, especially when riding with my wife. I had a single cheapie on my BBHSD, and didn't really want a bar end with the mirror sticking outwards (smack a tree, break mirror, and then shove the whole mess into your hand = no thanks). Not gonna lie, I kinda miss my barkbusters, but I finally settled on a Mirra bar-end, and will run it dropped to the inside and below the grip and see if can tolerate it. Just couldn't find anything bar-mount I 'wanted' to put on the bike at all, so best can go with for now - and helmet mount mirrors off-road just kind of freak me out thinking about it.
    c. A super-slim throttle that looks similar to the KS dropper lever. Need to play with once it shows up, probably in next few days, and may swap throttle over to the right hand side and dropper lever to the left. TBD, but I can get rid of my hacksawed and filed Bafang throttle - this one should be 1/2-2/3rd the width of the cut down lever.

    3. Misc
    a. Dropper post. This one was frigging analysis paralysis. I still have an old Fox set of off-road armor and hydration pack and like them ok, but man they think everything is made of gold - not spending $400 on a dropper and THEN buying a cable and lever. Meanwhile, the Medium frame fits me pretty well but the 100mm dropper post AND the shortened crank arms has the post a fair distance out of the tube - I'm still not at min insertion depth, but it's a CF frame so going with I'd like to keep most of the dropper post inside the frame. Stupid, maybe, but reliability and strength good, broken frame = bad day. I'm not tearing up crazy rock gardens so could have probably left it alone, but - didn't want to. Went all over the place from a used takeoff KS, to a UK company with a reasonable-ish priced and good reviewed but seemingly unservice-able ~$150 dropper, to eThirteen, OneUp Components, SDG, ... Realistically I probably could go with 185mm or so, and was going to pull the trigger on a OneUp (~$50 replacement hydraulics, serviceable), when I came across a 170mm SDG Trellis nearly new (normally a ~$250 post + lever, etc.) and made an offer. SDG Trellis w/Raceface lever inbound.
    b. Chainrings - on a cargo ship somewhere, shoulda been here already. I think I've got a pair of 40 and 42T coming. I may well wind up back and the 38T, but it's a relatively cheap experiment.
    c. Chainring bash guard - This was a bitch, and still don't think I found one I like. Most 104BCD guards stop at 38T or smaller, and while there are some cool guards for e.g. Shimano and other motors etc. that are static mounted or split, picked up some random AliExpress one for now along with some longer chainring bolts.

    Should keep me busy for a little bit. Still need to find the *#&(*# heat gun for the longer rear fender... will post pics and updates as I get 'er done...

    Leave a comment:


  • marcos
    commented on 's reply
    BMS overcurrent shuts down the whole bike including the display, so I don't think you could see an error code, and the BMS doesn't have CANbus so we can't talk to it to get other data.

  • rtp
    commented on 's reply
    marcos Will you get an error code for BMS over-current being triggered or other BMS actions?

  • paxtana
    commented on 's reply
    The V2 controllers on these bikes were shipped with programming that pulled far more current than what the listing advertises for ludicrous. The 2000w advertised would be 40A, not 60A. We will be notifying customers that they need to lower it to 40 (or more ideally 35 if you want to be on the safe side).

  • IOUZIP
    replied
    X2 owners if you are swapping out the rear shock the bushings for Fox shock are 803-03-179 (8x32.39mm) and 803-03-245 (8x16.46mm) Jenson seems to be the only US company selling both.
    Installed with bushing listed no issues. Fit perfectly.

    Just installed the Fox Float 38 E-Tuned 160mm fork.

    Click image for larger version  Name:	luna-x2-fox.jpg Views:	133 Size:	224.0 KB ID:	146671
    Click image for larger version  Name:	IMG_7551.jpg Views:	0 Size:	3.32 MB ID:	147876
    Last edited by IOUZIP; 02-16-2022, 05:48 AM.

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  • marcos
    commented on 's reply
    Error 10 is just overtemperature, you pushed that motor a bit too far, its not BMS related. If it were a BMS problem the whole bike including display would shutdown the first time you go full throttle for a few seconds

  • rtp
    commented on 's reply
    marcos or gary probably have a definitive way, but if you're hitting unexplained motor cutoff (Your error 10 is either MOSFET of Motor over-temp, so not the same), you can lower the threshold and ask Luna for how to definitively check/confirm. I'm not aware of the controller catching a specific error on BMS threshold/BMS cutoff - it 'could' be an Error code 12/probably should be for BMS cutoff.

  • Nebakanezzar
    replied
    Originally posted by rtp View Post
    Public Service Announcement ( ;) )
    Just a few tidbits that may help someone out if they haven't seen it elsewhere..

    One of the things I had asked as I was purchasing the X2 was info on the BMS, but Tony wasn't able to provide that info at the time...
    A few users on Facebook have been seeing issues in motor cutoff, presumably at higher assist/power/profile levels, and marcos said that the Ludi bikes (or all X2s? I'm assuming at least all Ludis) were requested with ~60A BMS on them, but apparently at least some number were not. Luna is now checking them before going out, but if you are experiencing this, may want to reach out to Luna.
    Note if need be until resolved, you CAN lower the Battery Current Max to 35A i the Luna VESC mobile app under Bike Cfg.

    One other - I'm kind of surprised, and I've been removing my battery for charging to date, but apparently you really want the bike power button (chrome button above key lock on side of bike downtube) pressed in/on position if using the built-in charge port, or at the very least, some arcing/sparks may result. Seb did a video on this here:
    https://www.youtube.com/watch?v=fUxlLb6Y7qA
    He's also got a few other videos under his YT username...

    Hey RTP,

    Wow, great info as usual! i did get a Error 10 once early on, where do i confirm if i have the 60A BMS?

    thanks!

    Leave a comment:


  • rtp
    replied
    Public Service Announcement ( ;) )
    Just a few tidbits that may help someone out if they haven't seen it elsewhere..

    One of the things I had asked as I was purchasing the X2 was info on the BMS, but Tony wasn't able to provide that info at the time...
    A few users on Facebook have been seeing issues in motor cutoff, presumably at higher assist/power/profile levels, and marcos said that the Ludi bikes (or all X2s? I'm assuming at least all Ludis) were requested with ~60A BMS on them, but apparently at least some number were not. Luna is now checking them before going out, but if you are experiencing this, may want to reach out to Luna.
    Note if need be until resolved, you CAN lower the Battery Current Max to 35A i the Luna VESC mobile app under Bike Cfg.

    One other - I'm kind of surprised, and I've been removing my battery for charging to date, but apparently you really want the bike power button (chrome button above key lock on side of bike downtube) pressed in/on position if using the built-in charge port, or at the very least, some arcing/sparks may result. Seb did a video on this here:
    https://www.youtube.com/watch?v=fUxlLb6Y7qA
    He's also got a few other videos under his YT username...


    Leave a comment:


  • rtp
    replied
    Tomorrow is looking like possible snow of all things, so we did a new ride today before we're in snow.

    Longest ride to date so far at 20 miles, with some wet, bit of mud, with around a mile of tight muddy unexpected single-track thrown in. Mostly levels 2 and 3, with a brief bit of 4 of 9 in part of the single-track that wasn't really needed, but just for the heck of it. Had the Johnny Watt tires spinning a bit mostly when waiting for my wife to catch up (not her fault, still working on getting her onto an eMTB..).

    The short rear fender did about as expected - sprayed the back of my pants, hydration pack and my back a bit. Going to move up fitting the longer rear fender.. ;)

    I think I came back with somewhere around 68% or so batter indicated, although am definitely seeing 10-15% or more sag when under higher power even in levels 2-3 of 9.

    I still don't 'love' the Ergon SMC Core saddle, but 20 mile ride and nothing's 'hurting' in those areas, so I don't hate it either...

    A good ride, now let's see if it actually snows tomorrow. :-/

    Going to go shop for a replacement dropper post, 170-200mm-ish.

    One of the stops around the midway point - nice with no one there...

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  • rtp
    replied
    Got the seat (Ergon SMC Core, M/L size) - the S/M is barely bigger than the Volt 135mm so just skipped it entirely.
    Also did another round of messing with controls - set the brakes more inward so they're in 1 finger natural position, can grab with 2 if I need to.

    Tried without luck to find a way the 'pro' Bafang throttle would work out but the base on it is just too wide, so I grabbed a hacksaw and a file, and for the time being trimmed the OE throttle lever to not be excessively wide so it no longer gets in the way of the display controls, etc. Have another throttle coming, more like the dropper post lever configuration, but for now - it'll do. I rounded the throttle edges off more after taking the pic below...

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    Headed to the coast for a day and a night - got rained on the first day, but it was gorgeous out the second, so did a 16 mile or so random ride.
    Folded up the hitch (has a lock in the pin, but nothing a good set of cutters can't get through, and backed it up to almost touching another car in the lot, and the bikes 'slept' with us.
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    Still no resolution as of yet on my Bluetooth controller issues, so no fun of datalogging any of the rides.
    I did have one 'surprise' I'll need to look into further - the battery cover popped off during the ride and the battery started to drop loose. I caught it before it fully exited the bike frame, thankfully, but need to poke at this - seems like it doesn't click as 'positively' up into the frame, wondering if something loosened up or? I know the X1s had some 'loose battery' issues, but I think that was more about being able to push the battery upwards into the frame ? Mine's tight, so not sure if anything's changed there - will look at tomorrow, heading out for NY Eve in a bit..

    I've got a larger MuckyNuts rear fender waiting to go on - will probably use a heat gun this time, mainly just want a bit more rearward coverage for when I'm rained on or get into some mud etc.
    Have got the much-slimmer throttle coming, and need to get around to completing the laminate/frame protection. Definitely need to get a longer dropper seat post, just haven't decided on which as of yet.

    Will probably see if there's some way I can get rid of some of the slack on the SRAM G2 levers - I like the levers and the brakes are overall OK, although will probably upgrade the rears to 200mm, but especially set up for 1 finger operation, I'd like to have the levers closer to the bar with slack removed...

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  • rtp
    commented on 's reply
    Entirely possible the Apollo seat was even the same model, just not in children and small women size 135mm! :)
    Whatcha going to do with the L frame?
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