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

[Msim]

What is the maximum number of spacers that can be used with an eclipse chainring. Picked one up in 48 and due to the increased diameter I am having a hard time with it

[paxtana]

There is actually no maximum number of spacers. You can use as many chainring spacers as you like, with the only caveat that you will need to use longer chainring bolts.

Like let's say stock is 10mm bolts. If you added 10mm of spacers, you would not be able to thread that bolt in. But pop on down to Lowes, show them the bolt you got, and that you want it in 20mm? They'll hook you up and that'll thread in no problem.

[phan27]

Hi, hope you're well guys and thanks for your support. My bike is turning off automatically, and I don't know what's the reason. Every time it turns off, I unplug the connector between the battery and the motor and it starts working again.

Is this an issue with this piece and needs to be replaced? Or maybe something else.

Thanks

[paxtana]

Hi..How much charge is in the battery when this happens?

Is there any error code?

[phan27]

Sorry wrote my response on a new thread. This happens when the battery is full charge and when it's not. No error code is displayed on the screen

[paxtana]

Is it intermittent or can you reproduce the behavior while on a bike stand? If so can you try running it off the charger as the power source? If it is not can you try a discharge test of the battery? Both methods are covered in the troubleshooting docs on this forum (knowledge base)

[david cabrera]

Hello LUNACYCLE:

Do you sell the SUR RON with a kit like this?

[HIGHVOLTAGE]

Nothing at the moment but I'm sure this will eventually come.

[bedepew]

I need new crank arms for my Sur Ron light bee. The ones that came stock with the pedal kit do not allow for proper pedal threading. Do you have one you can sell/ship me?

[bedepew]

The left crank arm is not reverse threaded the way they are on most crank arms. I bought new pedals and cannot use them with the stock cranks. Not an issue with an order really, just need to order some newer nicer ones!

[bedepew]

Great, thanks.

[paxtana]

bedepew sorry for the wrong information here but the above information is NOT correct so if you have not ordered the cranks yet, that is not the ones you want. Neither the offset nor the length is right for Sur-Ron. What you want are these https://www.tartybikes.co.uk/cranks%...14p13254.html?

[daedalus1]

Hi, I was wondering if you guys would recommend the cyclone 3kw or cyclone 7.5kw for maintaining a sustained 40-50mph. The donor bike I would be using would be a Marin Rift Zone 1 full suspension mtb, with 29 inch wheels, 73mm I think bb, and I've already built a 100A 24Ah 8s20p 72V pack with 30Q cells.

I saw on the cyclone tw website that the 7.5kw motor now supports non fatbike frames by using an included bottom bracket extension, they even offer an isis version. See link for pics. While it does seem a bit sketchy to put torque on the bb with an extension, it seems like it would work well with some custom strengthening. Only caveat I see is it would shift the left pedal out 1 or 2 inches more than the right with the extension in place. Also, it seems like the cyclone 7.5kw doesn't have the 6 to 1 reduction gearing, so if anyone could clarify if the 7.5kw would have less torque I'd appreciate it.

If I went the 3kw route, I'd immediately upgrade the controller to 60 amps but I'm not sure if going that fast continuously would end up overheating the motor. I've seen the 3kw go up to 60mph on the forums but it seems like going 40-50mph continuously would have a good chance of overheating, though I haven't found much info on continuous high speed use. Obviously, it would be more practical to go the 3kw route, but I want something that would be reliable going fast continously.

I also saw that lunacycle no longer sells the cyclone 7.5kw, I was wondering if they'd ever be restocked.

Thanks.

[paxtana]

I can't speak for whatever cyclone themselves have documented on their site, but just from my own opinion I would agree that looks sketchy.

Yes you can do 40-50 on a 3kw, depending on how it is geared etc. I use a BBSHD with 3000w peak using ludicrous and I hit 45-47 on a fully charged 52v pack so obviously 72v would be even better. It's going to depend how you are riding it whether it overheats. I would not recommend riding it uphill in the wrong gear or something like that, but then again I would not recommend doing that with a 7.5kw version either.

No I don't think the 7.5 will be restocked at Luna. It is not planned anyway, though over a long timeline I would not rule it out.

[daedalus1]

Okay thanks, I'll definitely order the 3kw when back in stock. I'd order the luna sprocket too but I don't want the reduction of 48-46 so I'll probably get the triple freewheel to get the 48-48t ratio I want unless either the double sprocket or luna sprocket would be able to be custom ordered with 48-48. I don't have a front derailleur so a double sprocket setup would be optimal.

Also, my bike comes stock with an external sealed bb with hollow spindle, I'm guessing I would have to get new cranks regardless of whether i get the lunatic set or cyclone set and that the old cranks wouldn't fit?

Thanks for the help.

[Sveiga]

Hello, planning to import the SUR-RON X to Norway. I understand the bike is delivered with the 20mph limit. But will you provide the nessesary paperworks to register the bike for road use? And do you got any experience or tips for me as an importer.

Regards

[HIGHVOLTAGE]

No paperwork included but I think you can check out the Sur-Ron Owners Group for some ways around it.

[paxtana]

Please note that Luna does not ship these overseas. If you order the bike with the address of a freight forwarder that is none of our business but we cannot ship a bike overseas https://lunacycle.com/shipping/

[Arve-san]

Hi. Do you have any products that can help squeeze out some more juice from my 250W/36V BBS01?

[HIGHVOLTAGE]

Unfortunately not. BBS01's are usually designed with less copper windings in mind and weaker parts. You'd likely risk frying the controller if you put too much juice into it.

[paxtana]

You could get the bbs02 or bbshd bare motor. These would essentially be a drop-in replacement for the bbs01, using the same wiring and accessories.

https://lunacycle.com/bafang-bbs02-750w-bare-bones-kit/

https://lunacycle.com/bafang-bbshd-bare-bones-motor-and-controller-only/

[Ian Silver]

Hello-

I am looking for a front hub motor for a 135mm fat bike, 20" wheel. My bike currently has a Bafang 750watt rear motor (Juiced camp scrambler), and I would like to make a 2wd bike, ideally pairing the front and rear motors as closely as possible to each other. Do you have any motors that will work well for this application?

[MIKEinNC]

This may be what you're looking for: https://www.amazon.com/gp/product/B0...CDI8OSTK&psc=1
The catch is your rear Bafang is a geared motor and the one on Amazon is direct drive. I'm not sure what issues that might cause. Overall I tend to agree that an additional motor might not be the best idea, but if you do, it's probably best to match the motors, as you originally stated.

[Ian Silver]

I had looked at the direct drive one you pointed out, but figured that it might be rather odd to have a direct drive and a geared on the same bike...

[MIKEinNC]

I agree, it would look a little odd, and the two different types of motors would probably respond differently to the throttle.

[Ian Silver]

I understand the inefficient argument. But I already have this frame and was planning to add a 2nd battery pack so that I can get by with 70% charge. I figured I could also add a 2nd motor on the front hub and let both motors take the load. You think thats a bad idea?

[jangles]

See my post below . Mine are only 350 and 250 but it works fine.

[jangles]

I have an AWD fat bike and I'd like to convert to a mid and keep the front hub also . It has a built in controller for both motors , I think I could just do an install with another battery on the back rack ?? What do you recommend ? Thx.

[HIGHVOLTAGE]

Shouldn't be any issues as long as your BB can take a mid-drive. You're gonna have a lot of extra weight though with 2x batteries and 2x motors. This is usually not recommended as the gains from having a 2nd motor do not outweigh the massive weight disadvantage that comes with it. Especially since a Mid-Drive already provides more than enough torque on it's own. Imo it's always better to have two e-bikes than to have one heavy Frankenstein bike

[tricon]

Hey guys, I'm looking to build my first eBike. I'm certainly capable of the technical part of it, but I'm not sure what kit I should be looking at. I have a 2015 GT Karakoram hardtail with hydraulic brakes. It has a cartridge type BB, but I can only guess its the 68mm variety? I'm trying to do this on a budget to get my fat ass out moutain biking more often, a little help on the hills will get me out there every morning.

Should I be looking at the BBS02 kit with the standard BB? Can I use some LiPo4 batteries I have for my large drones? They are 4s batteries in 12,000mah capacities. I was thinking I could put two in series and get 45v of 10c 24ah out of them for pretty cheap. I could add a 3rd for 67v is that's better but not sure if the controller can handle that voltage.

Is it better/more economical to look at a hub based system?

[tricon]

I'm thinking of using these in series, 24ah at 45v, I've read you can get about 50-60 miles when hooked up to a BBS02, but I'm not sure if they'll give me enough power for moderate hill climbs.

http://hobbyking.com/en_us/turnigy-high-capacity-battery-12000mah-6s-12c-drone-lipo-pack-xt90.html

[paxtana]

Yes it sounds like bbs02 would work, though it would be advisable to check that first.

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

Ideally as far as power source you want 13s or 14s. LVC in the controller is around 39, and if you go higher than 60v you might blow a cap. BBS02 peaks at 25A, so if the pack if 24c peak it is probably not unreasonable to expect it can put out the discharge rate you want, spose you could dial down the current a bit in the controller. I would be more concerned about keeping the packs in series at the right voltage. Two of those in series is going to hit controller lvc before you run out of battery juice, and three in series is too much voltage. Not ideal.

[pure_mahem]

So I see a lot about using 52V batteries on 48V BBSHD units. So much so that this was the route I thought was best to go. Does using a 52V Battery bought from Luna in conjunction with a BBSHD bought from Luna void any warranties? or is there not really any warranty for DIY kits? also do Luna batteries come with any sort of warranty?

[paxtana]

Well from a strictly legal standpoint nothing on the Luna website is sold with a warranty unless expressly stated on that listing. There is just too much that can go wrong that would be outside of our control and unrelated to quality of the product (i.e. how it was used or abused) for us to take on that kind of legally binding obligation.

That said, we did not get where we are by ignoring support tickets, and we always try to help. How we approach that will depend on factors such as how old the equipment is. In other words, essentially the same thing as a warranty but with more discretion for support to handle things on a case by case basis.

With regards to our support guidelines, we do not differentiate our general support guidelines based on whether you are using 48 or 52v in conjunction with BBSHD.

[pure_mahem]

Thank You!

[joq3]

I have a Bafang Ultra with the DPC-18 display. Is it possible to somehow set the max speed on the fly without entering settings? I know Luna Cycles works with Bafang, is it possible to have a modified firmware where holding a button will set top speed to 25km/h and holding it again will unlock it? I need a quick way to set this because in my country there is a legal limit of 25km/h.

[HIGHVOLTAGE]

There is no way to change the firmware unfortunately. You should be able to change the max speed in the DPC-18 display settings though. Not sure if that was changed for the latest Ultra model version though hmmm.

[jangles]

I have an AWD fat bike and I'd like to convert to a mid and keep the front hub also . It has a built in controller for both motors , I think I could just do an install with another battery on the back rack ?? What do you recommend ? Thx.

I'm thinking it wouldn't be any different than a person 13 lbs heavier than me riding it with the kit Luna has on sale with a 3lb

52v Mighty Mini 30q 6ah

. The more I think about it , it would extend my range quite a bit by allowing me to run each motor individually or together off separate battery paks ? hmmmm

[pcliteuser]

i moved my bbshd kit from my 9speed mtb to my new 12 speed mtb. to my surprise lekkie chainring and eagle 12 speed chain won't fit :( i know that the eagle chain works fine on 11speed and 12speed coz my 12speed mtb is using 36t 11speed chainring - anyways i need help :( do you guys have any chainring solution that will fit 12speed chain?

[ncmired]

The stock, fugly pie plate till you find something better?

[paxtana]

Those narrow/wide rings were not designed work with 12spd chains..even 11 speed might be pushing it last I checked.

[Joe Remi]

What Paxtana said, I used that ring with 11-speed and it was definitely as tight as you can get away with.