Ask an ebike technical question get an answer within 30 minutes or so.

[berkel]

Hi, can anyone tell me the current process to update firmware for my BBSHD Ludi 2 Controller? I got it in April 2021, but due to various issues didn't build the bike and install it until now. Do I still need to use an Android device to update the firmware? The link to the BBSHD Ludi V2 Android app on this thread is down (https://electricbike.com/forum/forum...documentation/).

I have VESC on my Windows laptop and also on my iPhone since I recently bought an X2 with M600 Ludi 2 motor, but it's not clear whether I can use IOS app to connect to my BBSHD Ludi V2 with old firmware. I was told I could n

I wouldn't even need it, since it works well at 52 V with the default settings, but I have a 72V battery and eggrider display I want to hookup, but haven't updated the firmware on the BBSHD Ludi V2 yet.

Thanks

[Floyd131313]

I'm trying to find the seat tube size and the length of the stem on the Luna Fixed.

[Tizzle]

Hi, I would love some help with my Luna Stealth.

my bike was starting to feel a little 'crunchy' while peddling, and then after a few days, the motor won't really peddle while powered anymore, it just 'clunks' and gets kinda stuck.

alarmed, I took it apart to look at the gearbox. and low and behold, I see little bits of blue plastic on the metal gear on the motor side. see attached picture. you can see tiny bits of blue teeth from the gear box.

I assume what I need to do here is to order a new gearbox, put it back together and it should be good?

Thanks for any and all advice from the group! (and hoping Luna will sell me a new gearbox!)

[paxtana]

Yes that will likely fix it, please email support@lunacycle.com

[omc707]

Can someone provide instruction on how to tighten the belt (not the chain) on the talaria xxx?

[paxtana]

https://drive.google.com/file/d/1ZVyo5NnPhAnf_MMZpo3k3Np9w5Bqb6oO/view

Please see page 56 of the manual for belt tensioner adjustment

[Vincentvaldez]

I cannot remove my rear tire from my surron x. I may have even stripped the lug nut. Does anyone know any tricks or way I can take it off without damaging my bike in the process

[paxtana]

Take it to a powersports shop and have a professional do it?

[kalvino]

I recently purchased a Talaria Sting MX4 about three months ago and have done 450 miles on it. The rear brake lever has gone soft and so I followed the online threads for spongy brakes, but it did not solve the issue. It got better, but the lever does not return to the starting position after pulling it in. Also, the brakes did not really grab that well. I then found that only one of the pistons is actually engaging and the other three are stuck. I have tried putting some mineral oil around them to see if they would loosen and apply hydraulic line pressure, but they do not extend out. What can I do to solve this? Is this a defect in the brakes from Talaria and is there some sort of warranty? Thank you.

[paxtana]

Please email us attn:seb and include order# and a summary of what was attempted. If it was only burped you might need to try a full bleed and to push the piston(s) back into position with a flatblade screwdriver but Seb will be able to help determine best course of action.

[ANSELMO]

Hello good afternoon. I'm completely new to lithium batteries. I have a Fantic ebike that uses a Brose engine and a 626wh battery, 36v and 17.4Ah. However, I would like to use an extra non-original, lower capacity battery, which I have not yet purchased. I intend to use it in a NOT parallel way, that is, like the original, for longer trips where there is no way to recharge the original battery. I saw some topics about the Rosenberg brand magnetic connector which could be connected to the cable of a 36V generic battery, my question is: As the Rosenberg connector has 6 (wires), what would be the best BMS to distribute these specific loads to connect that extra battery to the Brose engine cable plug? Thanks in advance for your patience, and thanks for reading this question.

[paxtana]

Are you sure your controller even really uses those extra communication wires on the rosenberger connector? Rosenberger just has those there in case a manufacturer wants to use them but that does not mean they are actually in use. Might make sense to wire up a rosenberger pigtail to a power supply, a charger, or some other 36v nominal power source and see if you can power on the bike with just positive and negative.

[ANSELMO]

Hi Paxtana,
Great idea, I'll check this out before making any decision. Thanks for the guidance.

[paxtana]

You're welcome!

[ambid17]

Can't seem to find a new Front Axle Cap (AKA set bolt) for the Talaria XXX in stock anywhere. Any suggestions? Is it safe to ride without the cap?

I am referring to part 10 here: https://ebikezilla.com/en/spareparts/970008-fork

[paxtana]

Which fork brand do you have

The cap is not actually the part that holds it from sliding out, the pinch bolts do that, but it would not be a great idea usually to ride while missing axle parts.

[E1%er]

About six months ago, i discovered that my surron throttle wasn't responding, keyed on display lit but no motor. Despite trying various troubleshooting steps such as checking cutoffs, using the diagnostic cable, and even replacing the throttle itself, the issue persisted. However, during the process, i noticed that after having the bike keyed on for five minutes, the throttle started working and the bike functioned almost perfectly, albeit with occasional brief cutouts during the first mile of a ride maybe only once maybe three or four at worst. I have continued to try and figure out but it was dependable so I continued to use it daily.

Recently, the problem reached a new level of severity, as the throttle completely stopped working. Interestingly, this occurred on a day that was unexpectedly 30 degrees colder than usual and during thunderstorms.

Any help will be very appreciated. Thank you in advance.

[paxtana]

It would help to know what kind of bike you have

[E1%er]

Surron! Sorry about the obvious omission, it is a surron x with electronic throttle.

[paxtana]

I would disable any additional cutoffs temporarily to test such as kickstand sensor, tilt sensor and so on. And also disconnect the power harness from the battery, check the contacts on the battery to the connector, and firmly plug it back in, just in case it is relating to a high resistance connection. If thermal expansion affected it in some way I think that may point to it being either a sensor needing adjustment or a plug that's partially unplugged somewhere.

Check these posts

https://electricbike.com/forum/forum/knowledge-base/surron/90003-sur-ron-light-bee-electrical-troubleshooting?p=90025#post90025

https://electricbike.com/forum/forum/knowledge-base/surron/90003-sur-ron-light-bee-electrical-troubleshooting?p=90011#post90011

[E1%er]

Thanks for the help. I went through everything, and after I reassembled the bike it worked. No waiting keyed on the throttle responded. I test rode it and through out the morning tested it several times.
But, later in the afternoon it was back to no go. Now it does nothing. I am ready to give up. I live in western Colorado and I'm looking for a technician today... I really don't get along with electric.
If you have anymore info please advise.

[paxtana]

Please email support@lunacycle.com attn:seb, he can probably figure it out. If it started to work again temporarily seems like it is almost certainly something loose but Seb's a technician and a specialist at troubleshooting

[curtdirt]

I think I can put some turn signals onto my segway X260 if I can find a handy 12 volt source wire that I can splice into. Also I guess I can ground to the frame nearly anywhere that's metal, yeah?

[TalariaX:Guy]

Why whenever I let go of throttle it feels like my brakes apply

[Retrorockit]

It has Regenerative Braking, that's the motor recovering energy tore charge the battery.

[varunverma855@gmail.com]

Please help me rotate the thing circled in the picture so it’s aligned with the front wheel. How do I do this? Thanks

[paxtana]

Loosen headset, put it into position, tighten headset. This is probably easier if you have the handlebars actually attached to the stem when doing so. Most people would stand in front of the bike and use their legs to hold the wheel in place, then just pull the bars in whatever position it needs to go. There are probably videos on youtube showing this if needed

[Retrorockit]

If you don't need to remove it you can leave the small bolt on the top cap alone. That adjusts the bearing preload. There should be 2 bolts that go sideways through it on the back side. If you loosen those it should turn on the tube sticking up. It's designed to slip instead of break in a crash. Like Paxtana said having the bars mounted helps because this is how you align them. Get them straight , and tighten the 2 cross bolts. If that part is broken then you need to remove the top cap. Don't let the fork fall out the bottom or you might have ball bearings all over the place. Tighten the cap just enough to take the play out of the bearings (the other 2 bolts must be loose for this). Then tighten the 2 pinch bolts. You can check for play by holding the front brake and pushing the bike back and forward Too tight can damage the bearings.

[AZguy]

That's a surron with dual triple clamps, not sure if same process - admittedly I don't know one way or the other

[Retrorockit]

IDK for sure if the bearing adjustment differs with triple forks or not. But straightening the stem should be the same.

[AZguy]

You'd think... but I haven't looked at one up close... I know none of my motos work that way since the handle bars bolt to the top triple clamp, but sur-ron does use a lot of bicycle parts so ya never know...