Endless Sphere

Thanks but there are just a very few parameters to adjust in KBL software... I bought the 5T motor. I have also tested my other controller on the QS motor, with kelly controller connected to my front motor, and even when I spin my QS motor with the other controller the kelly controller gets 3-2 err...

Since it's an inrunner, then you'd be relying on the motor being sufficiently over-engineered to handle the extra rpm without flying apart. It's only a good idea depending on how it is used. If you do a lot of relatively high speed cruising, then no it's probably not a good idea, since those extra c...

ZeroEm wrote: ↑

Nov 03 2020 4:16pm

My 48ah 72V battery cost $1,800 USD

My 52ah 78V nominal battery cost less than $500 including shipping not including a bit of elbow grease.

The ride+race format is something I'd considered. Here's an idea for the hopper. I have a good friend here in Costa Rica who's been into ebikes for 20 years and solar power and green energy for longer than that. He has a property with a kilometer of beachfront on the Gulf of Nicoya. The property ha...

A lot of great work so far. Before final assembly be sure to get all of the frame measurements so that once you get that bike rolling you can do it right and build an AL frame to match your swingarm that incorporates the battery box for much more battery room with a smaller exterior form. I'd be ver...

I'm already in contact with aliexpress to get a solution... But ist not that easy with them :wink: That's a waste of time, because you'd have to pay for shipping it back. You're likely to have more luck being more flexible directly with the seller where you pay something. eg The shipping for a new ...

The rotor is the part of the motor that spins. For a DD hubbie like yours it is the entire outside shell. Damaging the axle won't create a wobble, though it might make the rotor rub on part of the stator. The stator is the stationary part with the copper windings and the stationary axle runs through...

Cool bike, like the bikeE but more stylish and bigger front wheel. I like the battery room on top and bottom over the Cannondale, because if I ever build something like that, I'll want to be able to accommodate a big big battery to go forever.

You'd be dishing it by less than 1cm, which to me is a non-issue. With it on a trike, I don't think you'll lose enough lateral rigidity to make a difference, and I think Neptronix may have been looking at it wrong to bring up handling as an issue, since your plan is to put the tire right where it sh...

I've noticed how mellow Chalo's posts are, but he still gets his points across but in a more mellow way. :thumb: LOL, ya'll act like he was neutered or something. :lol: We all mellow with age, but anyone that couldn't handle the "old" Chalo need to grow a thicker skin. Good information so...

I don't think a bearing not pressed all the way in would do that. With the video my computer decompressed I couldn't tell how far off the motor was. Motor looked to spin pretty straight and only the brake disk was way off. If it's only the disc mount, you may be able to grind or file it more true, o...

Yes, the Aliexpress looks like a MXUS 3k. My computer smashed your video strangely, so between the spoke flanges looked like about 100mm, and the brake disc appeared strangely spaced wide. For a motor itself to have wobble then one or both bearing cups in the side covers are not properly centered wh...

Why use a hubbie that weighs 14.5kg without spokes, rim and tire, and under-utilize it? It's like buying a sports car and sticking a block of wood under the gas pedal to intentionally prevent using the car's potential. More like driving an empty truck to work and back every day. As so many do. True...

Get an ebike tester first, or since that controller is so cheap get it too and keep it as backup later on after you get your motor running properly with a sufficient controller. Why use a hubbie that weighs 14.5kg without spokes, rim and tire, and under-utilize it? It's like buying a sports car and ...

Hello, what do you think about this controller? 72 V 80 Amp 24 mosfet, 3000w. Sensorless mode (WITHOUT HALL SENSORS) https://es.aliexpress.com/item/4001039692672.html?spm=a2g0s.9042311.0.0.5d1963c0D8vMGz Is it a good option? I have a 5000w motor hub. Will sensorless mode work fine? Thanks :) First,...

You need 2 controllers to run 2 motors. The Grin Tech website shows how to wire up 2wd to one throttle.

A few millimeters less washer to pit up a few mm of flex in the swingarm plus adjusting the derailleur may get you there. That's assuming it's AL. If it's steel then you can easily get the swingarm to the width you need at the dropouts. If I still couldn't get it there, then I'd either figure out ho...

First that's not a MXUS 3k Turbo unless they've been totally redesigned. 2nd, that brake disc is either not mounted correctly or the mount itself is not installed in the motor correctly. Are you sure the brake disc goes on that side? It seems to be strange out so far from the side cover. Is that a h...

The single best thing always with a DD hubmotor for performance is to run as small a tire as you can live with. Sure it makes getting the eye appeal a little more difficult, but with the kind of power you're talking about pedaling the bike is a bit silly...like having functional pedals on a motorcyc...

A $4k bike needs to be turned into an ebike to help justify the silly high cost. ANY bike can be made better by making it electric, unless it's a bike used for competitive cycling where you'd make it illegal and useless except as a training bike. Then the extra weight would make training a better wo...

Are you going to put a fan blowing on the controller and mod the battery bay in some manner to get a bit of airflow through it to avoid heat buildup? If you're just going to put the controller inside the battery box, it better have some kind of thermal sensing to shut itself down when it gets hot, o...

When people first get these packs, what is a good test? First be sure to charge it including plenty of time at the end to make sure you're starting with it balances. Load a backpack with as much weight as you can and climb the longest steepest hill you can find that the bike will maintain at least ...

...For the battery, I will stick with the A123 liFEPO4 cells since I'm very satisfied with those from my previous builds. Sure they won't be the lightest, but they are durable, they tolerate huge current draw and best of all they are cheap... Awesome bike for free, and already has big room for batt...

Regarding aluminum or carbon fiber, I don't like putting anything conductive other than my battery leads near the terminals of a battery, or the cells making up a battery. That just makes more protective layers required to prevent shorts. At under 70mm wide, it's unlikely to get hit. If you're conce...

As long as the battery is well secured inside the triangle it's pretty darn safe. For some added peace of mind get some 3 or 4mm plywood and a roll of duct tape. I've had battery packs protected only by duct tape or duct tape plus a layer of cardboard mounted inside triangles function for years and ...