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

[Miles]

Thinking about buying a kit for my old Cannondale Bad Boy. Nice to see the programing cable selectable in the kit. In the 2nd part of the instructions it shows battery connections. What does my cart include to connect the battery to the motor? The only thing on the underside of the tube between the headset and the BB is the front derailleur cable that will be removed during the Bafang install.

Is the kit complete?? Seems like half the connector needs to be added to the cart?? It'd be nice if it was a plug-n-seal adapter-like plug the adapter it into the Bafang motor and the other end fits the no spark battery side. - SHEESH - right after asking it dawns on me to look for the adapter.

https://www.electricbike.com/matchin...to-controller/

"Luna Cycle is growing in popularity as a battery pack supplier for ebike kits. If you buy a pack from them, they already come with a female XT90-S anti-spark connector. It is traditional for ebike systems to have the female sockets on the battery side, because male pins are more vulnerable to having a metal screwdriver or some other tool accidentally touch them, shorting the battery in a huge spark, and possibly ruining your expensive pack. When they are unplugged from each other, the controller is safe, but…the battery is still dangerous, even when it’s just sitting on the bench…

This means that if you buy a Luna battery, you only need to swap-out the controllers’ male connector to an XT90. It is dangerous to work on the connector for an energized high-amp battery (great caution is required, even if you are experienced), but it is very easy and safe to swap-out the male connector on the controller of your kit, even if you’ve never done that before."

[paxtana]

That article was was written over two years ago, where did you see the link to it?

Right now if you get BBSHD it comes with Anderson connectors on discharge. There is a plug and play adapter, sold here

https://lunacycle.com/batteries/connectors/xt-90-male-to-anderson-power-pole-connector/

If you buy a softpack battery or a Wolf battery which uses xt90 and this is all bought in the same order, this adapter should be included with the kit. Especially if it's ordered as a battery option on the kit listing. But it can also be ordered separately from the link above if needed.

If you buy a hardcase like Shark, it'll have anderson on the shark cradle so it will also be plug and play but not xt90. Can not guarantee all hardcase packs have anderson but most do.

If you buy bbs02 this has bullet connectors on discharge. You do need to cut this off and put whatever included matching connector on it, there's no adapter for that.
You don't really have to follow those outdated guidelines for making the connection though. We sell solder sleeves on the site that can do the job with nothing more than a lighter and basically no skill level https://lunacycle.com/luna-solder-sleeve-variety-pack/ alternately you can use heatshrink butt splices which already have shrink applied as well as a heat-activated glue that seals the whole thing for a waterproof connection. Either does the trick and either is easier than that guide, which covers more old-school approaches. Not that it won't work to solder the connection or use older crimps, but it's more complex.

Anyway, the gear you have in your screenshot IS plug and play. Just not XT90 on either side. If you want that you'll need to rewire it.

[Miles]

Saw the link to it here, https://lunacycle.com/bafang-bbshd-1000w-middrive-kit/ - PART 2

This is the address to PART 2, https://www.electricbike.com/matchin...to-controller/

These pages come up when shopping for Mid Drive Kits on the Luna Cycle site. Mid Drive Kit install parts 1, 2 and 3 under the kit choices and the spinning Bafang motor..

[paxtana]

Thanks, we'll get that revised.

[dondelinger]

My bike is a BBSHD motor and I'd like to exchange the Luna Eclipse 42 to a RaceFace sprocket. My bike has only a 8 speed cassette. RaceFace says it's meant to work for 9,10,11 speeds. And where can I find the adaptor if the chainring works? I couldn't find one for the BBSHD motor.

[paxtana]

There's a spider in the bbshd parts section that'll work with standard BCD. Fair warning, it'll have a lot worse offset than an eclipse.

[Kinni]

That chainring should work fine with an 8 speed. Chain sizes (width) differ for 8 speed (7mm) vs 9/10/11(5.5-6.5mm) speed due to the distance between cogs on the rear cluster/cassette. Front chainring should have zero issues with that. But as Paxtana says, that offset is gonna be worse.

[DaveDTruckee]

Hi, I have a power cable that is burnt, and I need a replacement. I'm attaching a few photos of it so that you may help me get the right cable. Thanks!

[DaveDTruckee]

Thanks, much appreciated!

[DaveDTruckee]

So I could just take the wires coming out of the XT90 and use a solder sleeve to connect the wires directly, is that right? If that is the case, why would I need XT 90 pigtails. And if I do need the XT90 pigtails, where do they go and why? Sorry for all the questions, I watched a lot of those videos and they are the questions left unanswered. Thanks!

[paxtana]

Well yes..I suppose in theory you could use the xt90 that was on the xt90-anderson adapter. But there's not a lot of length of wiring there, and you have to make allowances for a certain length of wiring to be inserted into the sleeve. Not saying it's impossible but it might be more difficult. You would need to cut off any portion of the wire that has regular high melt solder on it, then strip it back, and still have around 6mm of length at a guess.

Ultimately it's your call but given the xt90 pigtails set is only 3 bucks, if it were me I would order it along with the sleeves just in case it's needed.

[dondelinger]

I'd like to buy a adaptor for the RaceFace sprocket . I can't see it in your shop for the Adaptor for a BBSHD motor. Also, my bike was made for a 8 speed cassette and the RaceFace says it's made for a 9,10,11 speed cassette. will it work for me?
Michael

[paxtana]

https://lunacycle.com/luna-bbshd-130bcd-spider-chainring-adapter/

[Joe Remi]

I'm asking for a guy I sold a BBSHD to a few months ago. He says there's some play with the spindle inside the bottom bracket (68mm style mounted on a Bike Friday). Is there any adjustment possible for the bearings in there? Alternatively, can the bearings be pressed out and replaced?

[HIGHVOLTAGE]

It should be fine, many of the units are shipped like that now and it shouldn't cause any issues.

[Danwinnipeg]

I have a bbshd with 150km on it. Yesterday while riding the max throttle speed went from 48km/h to 33 km/h. No apparent reason. Switching to pas and back to throttle didn’t help. Turning the display off and on worked and it was fine the rest of the ride. It happened again this morning and now intermittently in pas there is grinding sounds. It happens while the pas is engaged to accelerate. It’s fine while maintaining the same speed. I use my bike for a 20km round trip commute that it is almost entirely flat and even the uphill would be flat by most people’s standards, very gradual.

Any suggestions?

[HIGHVOLTAGE]

I would open it up and check the condition of it. Check the motor core, check the gears

https://electricbike.com/forum/forum/knowledge-base/motors-and-kits/bbshd/36670-bbshd-teardown-maintenance-and-greasing

[thanksgivingtorque]

Whenever I plug in my battery to charge, the leds on the mini lunacharger just flicker on and off while making a clicking noise. Is this a battery problem or a charger problem?

[HIGHVOLTAGE]

Email support@lunacycle.com with an order # and a video of the issue in action.

[Sebz]

Likely a charger problem, you can try to wire a incandescent light bulb to it to see if the LED flickers

[thanksgivingtorque]

I tested both the charger and battery with a multimeter and it seems to be working just fine, but this only occurs when they are plugged in to each other

[jjs]

Do you know:

1) The Low Voltage Cutoff of BMS for 52v Panasonic GA 14s7p

https://lunacycle.com/triangle-52v-panasonic-ga-18650-24ah-pack-high-power-long-range/

2) How do I determine what low voltage cutoff to set in the controller, for 25% or 10%, in order to maximize battery longevity?

Thank you!

[HIGHVOLTAGE]

1) It's 38v

2) You can only set the motor cut-off assuming you're using a BBSHD or BBS02. The BMS cut-off will still be set to 38v. If you're using a BBS02 or BBSHD, you'll need the programming cable to modify the controller settings. You can read more about it here:

https://electricbike.com/forum/forum/builds/custom-ebike-motor-programming/bbshd-programming/43287-basics-of-programming-bbs02-and-bbshd-mid-drives

[paxtana]

This chart shows how voltage equates to SOC so you can adjust that upwards if you want

[jjs]

Thank you.

[Isledune]

Recently I was on my ebike waiting for a light to change. Light changed started to pedal and out of no where the pedals and crank start spinning forward. The sprockets are all spinning. Everything is spinning, there is power to the rear wheel motor. But when I pedal nothing engages The rear tire. There is no play in it. Walked in to the park across the street and see the rear wheel sidecover broke. (At the timeI didnt knowwhat to call it) sidecover though seems to be what a few companies have them listed as. Basically, the sidecover was the shape of a plate.Now its a donut and a donut hole. Understandably now, that part get a lot of force on it. At some point it formed a crack and finally gave way as I was applying even just moderate force.
Anyway. Ive taken it to 4 or 5 shops. 2 of then said they’d never seen inside of those motors but would check it out for me (I can do that too for free thanks though)
2 shops flat out said they dont touch ebikes (yup)
and 1 shop said they had a 34 day waiting list repairs
So has anyone else experienced this? Anyone know where a replacement could be found (as in part not entire new motor). A friend says its aluminum but I dont know. Hard to tell. Im at a loss. The manufacter doesnt respond. I miss my dang bike.

[HIGHVOLTAGE]

This thread is mainly for troubleshooting Luna products but if the manufacturer isn't responding, that should be a pretty good indication never to buy from them again. I would just start over with a new kit, something like a BBS02 or BBSHD instead that's widely sold by various vendors instead of just one.

[paxtana]

Depends on the motor, the manufacturer, the seller etc
Given that we haven't even seen a picture or know anything about it only guidance we can say is to replace it with a new motor

[mic0182]

Hi, I was just wondering if the BBS02 unit (from summer sale) will work with my 36 volt (15 Ah) battery? Is there additional programming necessary? I also only need 500 watts of power. Thanks.

[paxtana]

It will only work with 48 and 52 sorry

[mic0182]

Does Luna sell any motor kits for 36 volts?

[paxtana]

Any kit besides bbs02 and bbshd, yes. So that includes cyclone and all hubmotor kits

[Greeno]

Went for a ride today and all of a sudden my motor starts screaming at me. Have the BBSHD (hot rod version) that I got back in April of this year along with a bunch of other stuff. So I'm thinking (hoping) that it's the nylon gear. So after removing mid drive unit from bike and disassembling I find the nylon gear is fine but the Driveshaft from the motor itself has snapped off right where it comes out of the motor. I thought that was one of the reasons to have the nylon gears well as the noise factor. Looking at the parts section of the site it looks like the Motor "B" Version (with the spade connectors) isn't available in the size I need. Mid drive kit I got was for a fat bike 73-100mm. Is the 100mm size going to be available any time soon? Help I need to get back on the road, or off road.

[HIGHVOLTAGE]

Yes, it'll be re-stocked during the next Bafang shipment in a few weeks or so hopefully.

[Greeno]

Heres a pic of my unit.

[supertwang]

Hi, I'm looking for a quick answer from Luna Cycles. I'm a tall, heavy rider - 6'4", 300lbs. I'd like to buy a hardtail ebike from you asap and am considering both the LUNA WOLF ALITE 500+ and the LUNA LONE WOLF ROAM. Neither seem big enough. I've also read your comments about how that might not be as important. BUT, I get sore when I'm hunched over a small frame for too long. So, a few questions:

First... I'm planning for the Ludicrous upgrade. I'm a former motorcycle rider, so I can handle the power. I also think its a better option for my weight.

1) Cost aside, which is the better bike for me? (Ignoring fit)
2) Which is the better fit for me ( Alite Large (19") but is a "PLus Sized Frame" but I don't know what that means, Giant Roam is 21". I think I'd probably look for a 24" frame in a normal bike. I'm currently riding a frame that's too small and have just about every extension installed. I really don't want to repeat this mistake.
3) Would you build a bike around a XL frame, if we decide that's the best fitwise? Would it cost extra? How much?
4) Is there a parts kit that'd give me effectively the same e-power kit that the Alite/Giant builds have? I'm a former bike mechanic (many years ago), so could probably do the retrofit. If so, can you point me at the kit?

Thanks for your help. You've got an excited customer with $ to spend. Please help find me the best solution.
Thanks,
Dave

[HIGHVOLTAGE]

1) Eh, these kinda questions are difficult to answer. Only you can really decide which is the better bike for you if sizing isn't a concern. I'm not really you, so I can't really tell you what will be your preference. They all do the same top speed with the same motor and with about the same range. Pick whichever one looks better to you, or has better pricing appeal.

2) Check bike sizing guides online. It depends on your height and leg length. If you're above 6'0", you'll probably want a Large or Extra Large frame.

3) Unfortunately this is not possible. Sorry. Bikes are already ordered in large batches ahead of time.

4) Yes, you can purchase it right here: https://lunacycle.com/bafang-bbshd-1000w-middrive-kit/ Just make sure to read the description for installing so you can get an good idea of how it's going to install.

Here below is some really helpful links that you can use to decide if you think your bike is BBSxx compatible. Generally if you can meet the requirements for it and your bike is fairly standard in design and size, the installation should require minimal skillsets.

https://electricbike.com/forum/forum/knowledge-base/motors-and-kits/bbshd/10736-how-to-order-the-right-bbsxx-kit

https://electricbike.com/forum/forum/knowledge-base/motors-and-kits/bbshd/10770-press-fit-eccentric-bottom-brackets-carbon-frame-and-bafang-mid-drive-kits

https://www.reddit.com/r/ebikes/wiki/bbs_faq (comprehensive list of tools needed here, very helpful)

[ecuagarcia]

I just got a rear flat on my luna banana. What is the the tire and tube I can purchase from the website? I only see 26' wheels

[paxtana]

The pre-conversion frame is from coast cycles, they probably have what you need

[Scottfixie]

Hello I’m looking at building an MTB ebike as I’m 6ft6 so will be looking into getting a frame as I have all the components already suspension gearing 29” wheelset MTB, so the question is, is there a preferred frame I can order for the Bafang ultra mid drive system ? I would need the biggest frame possible most MTB frames I have XXL

[HIGHVOLTAGE]

Not from LunaCycle but I'm sure you can find one on Aliexpress. It's not a very popular motor at the moment so there isn't much in the way of frame availability at this time. Also, is this your first build? Cause if so, I highly recommend not starting with the Ultra system due to still being a relativity new product.