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

[CometLunaBike]

I just updated the link. It looks just like that. Any help appreciated before looking at that huge KB.

[paxtana]

Looks mostly fine for typical hubmotors, assuming you don't pick one for fatbikes or something like that. You can always measure the dropout width to confirm. Not sure that's the best bike for this since it just has rim brakes but you could upgrade that to some extent.

Likely you could also go with most mid drives since the bottom bracket is probably standard. You can measure that too, if you wanted to go that route.

[Neilyb]

Hi,
I would like to know if the Luna 48v smart charger can work with this battery from Em3ev.
If not then could you advise what adaptor I would need please? Many thanks in advance!

Neil

[paxtana]

That charger will work with 48v batteries. Whether you need an adapter for a charge port depends on the battery. The charger has xt60 on it by default.

[DrJ]

I have a shark 48v, 13.5 AH battery pack that is not responding to the charger. I've done the easy BMS jump start procedure and no change. Luna Cycle recommended I do the more complicated version so I've opened the case but am not sure which of the cable connectors that plug into the PCB I need to disconnect and reconnect (there are 3, all white)
Do I do them all? is there a preferred order of disconnection/reconnection? I can send pictures if this helps
Thanks

[paxtana]

Before we get into any of that, are you sure any charger adapter you are using has continuity?

[Svenop]

I am waiting for the 68-73 bbshd to be restocked. Has the throttle and PAS issue been fixed? Can full range throttle be used while in PAS or is it still only an on/off type throttle?

[paxtana]

It was never on/off despite what some might say based off of bench testing without a load. With any version if you are actually riding it you can give it more throttle and it will respond accordingly. Not saying it is as linear as a sinewave controller but most people are happy with it.

Yes throttle priority has been fixed for months.

[KealohaGunal]

Hi my name is Kai and I am very interested in purchasing a Surron MX from you
guys and I was wondering if you made an accessorie or something like that so l
could put saddle bags on the back of the bike and a surfboard rack or if there is a best way to mount a diy platform. Thanks.

[paxtana]

Sounds doable but you will probably need to do some fabrication to do that.

[KealohaGunal]

What type of metal is the Surron MX’s frame made out of because I want to have a tray welded to the back of the bike to hold a surfboard rack.

[HIGHVOLTAGE]

I don't have one but I think it's aluminum isn't it?

[paxtana]

Probably. Definitely not steel anyway.

[JoelEB]

I have 2 BBS02's that I interchange when one needs repair. One of them has VERY SLOW response to PAS input, the other is much, much quicker. I ride a lot of mountainous terrain, and when I need to move to a lower gear, the PAS lag requires me to ride across the slope, or use the throttle. Can this be changes? I spoke to someone there, Joel, and he said earlier models of PAS had 2 sensors, 180 degrees from each other. I am getting ready to send the slow unit to you for the nylon gear maintenance, and would like to get issue resolved as well.

[HIGHVOLTAGE]

I don't believe we offer maintenance repairs. Make sure you're getting approval from support@lunacycle.com before you send anything. Did you check the programming on the motor to see if it has different power settings on the PAS settings?

[joshed]

Looking to convert my MTB to an ebike for commuting but still have the ability to do some MTBing with and without motor assist. Before i drop some coin with Luna cycles and modify my bike, I'm hoping to get some advice and feedback to make sure its the right bike and right fit of equipment.

I have a REI Co-op DRT 2.1 with 27.5+ wheels and hydraulic disc brakes. 11 speed with a 30T single gear in front and 11 speed in rear. This bike can also take 29" wheels if it matters. I've been looking at a mid-drive unit like the BBSHD at 1000w as I want the pedal assist more than a scooter but not opposed to a hub motor if my options are limited. I'm commuting 25 miles right now so speed and distance are a factor for me.

I think the bottom bracket is 73mm but not sure. There is a Shimano SM BB52 there and the part description says that it is 68/73 mm shell width. Would the 73mm fit?

The front ring is 30T currently and my bike tops out pretty quickly but has been great for uphill and mountain biking. Is there any point in doing an ebike kit on a 30T front ring? If so, how would this impact the speed. Can I change to a bigger front ring but not sure if this is a good idea? I'm guessing I would lose the really low gear for uphill.

Thanks and any feedback is greatly appreciated.

[ncmired]

"Would the 73mm fit" - maybe would be my guess. Although I'd bet that frame has a 73mm (2 7/8") bottom bracket, I'd be concerned that the chain stay would interfere with the motor housing, requiring the use of a wider motor, a fist full of spacers and leading ultimately to chain line and gear range problems.

Careful measurements would need to be made.

[MStelnick]

based on the bb position and the frame's shape, could this be a candidate for an out of the box BBSHD build?

https://www.belizebike.com/belizebike.ca/fattrike.html

[pure_mahem]

Just another idea. you may consult a local fabricator about the cost of moving that top tube up high enough to give you clearance to place the motor inside the frame. of course that would be dependant on clearance of the down tube still. If not perhaps a Cyclone would be a good option.

[paxtana]

If it needs an eccentric bb adapter most cheap adapters like sold at Luna will not work with cyclone. Bbshd just needs the diameter of BSA shell, but cyclone needs it it actually be threaded so you can thread in the bb sleeve

[MStelnick]

Thanks everyone. It would be for city riding almost exclusively (3,1/2 seasons).

[tomdav]

Any update on when the X-1 pre-orders will start to ship? The order page indicates mid-August but not sure if things are on track?

[HIGHVOLTAGE]

I think Eric said on Fast Electric Bike on Facebook that it's Late August - Early September now.

[ElectricCrab]

Hope this isnt a question asked a 1000 times but i really like the bufang hd kit but the bottom bracket is only available in the (fat) 73mm+, problem is the bike im modifying is 63mm. Is it safe to use that much of a spacer? Haveing a lil larger bottom bracket may actually help in my instance because of swing arm but im not sure if that is safe. Thank you so much for help and insight

[HIGHVOLTAGE]

I'd wait for the 68mm kit to be re-stocked to be sure first. Should be in about a week or so.

[paxtana]

It is safe to use a bunch of spacers but there are some things to keep in mind. See this page for an overview

https://electricbike.com/forum/forum/knowledge-base/motors-and-kits/bbshd/83401-mounting-100mm-bbshd-on-73mm-bike-frame-considerations

[Surrealxistance]

Good Morning,

I am just trying to figure out where i would be able to use the Sur-Ron MX, one of the criteria that would weigh in this is how many watts the motor is, i don't see that listed anywhere?

Thank you,

Justin

[HIGHVOLTAGE]

The Sur-Ron is a very high powered electric bike. It's wattage exceeds pretty much all E-bike laws so it's really only for private property but that doesn't stop most riders :P Just don't ride like a dick and nobody will bother you.

[paxtana]

It is around 5000 watts.

[Surrealxistance]

Thank you for the feedback.
Yeah at my age now i'm pretty chill. Not wild child anymore so doubt there would be any issues that way.

[chris78701]

Try to jump a curb at too high a speed and broke my rim. I have the 750w geared hub kit purchased last March, 26".

What are the specs or beefy replacements to replace this rim?

[HIGHVOLTAGE]

You can just bring it to a bike shop and have them re-build it for you.

[intramorph]

It looks like you will need a new rim as well to rebuild this.

[ncmired]

Try to jump a curb at too high a speed and broke my rim. I have the 750w geared hub kit purchased last March, 26".

What are the specs or beefy replacements to replace this rim?

Is (was) that an Alex brand Rim?

Measure the inside rim width and height in a good spot:

Armed with these numbers, rummage the Alex (or rim vendor of your choice) website. Those monster spokes are probably reusable.

[bikeboy]

Cost and availability of BAfang 860c shipped to UK

[paxtana]

If you can order it off the site then it is available. once you enter in your address at check out it will give you the cost including shipping