Endless Sphere

Intermittent problems are almost always in the wiring or connectors. Could be something loose, or something spread apart, broken inside the insulation but connects when in right position, etc. Occasionally it is bad solder joints on boards or connectors. Very rarely it is broken leads on parts mount...

From the symptoms, the problem is in the battery itself--it simply can't handle the current draw needed to run the bike with this controller, at least with whatever settings it has at present. Do you have a way to measure the actual current flowing from the battery under load? A wattmeter is easiest...

You'd have to check with your state, county/etc, and local city/etc laws to see what RVs are defined as, and what ebikes are defined as. Many governments have all of their legal code on the web in searchable format, kept up to date. Should be easy for you to find and look up.

If the battery is fully charged already, it sounds like the charger is just turning on and off to balance the battery; shutting down as current drops below it's shutoff threshold. However, it could also be the BMS that is shutting off and turning on repeatedly due to a cell that's too high, so the B...

There should be some caliper adjustment to allow clearing the rotor without wearing the rotor and pad to do it. :/

It mgith work fine, for a while, or forever. Or it might blow something the first time it's used. Only way to find out is to try it. :) Plenty of people have run controllers at their ragged edge, and performance and reliability varies depending on the quality of the parts used, and the design of the...

No, but it's certainly possible for the system to have a separate "calculation" for the speed limit and the speedometer reading. In that case, it would ignore the wheel size and other settings, and assume you have whatever wheel size it was programmed with originally, and calculate speed based on mo...

Check out the Learn tab, Troubleshooting link, on http://ebikes.ca . It has testing of halls, etc., that should help.

Does the controller come preset to exactly the settings you know you want to use? Or: Do you know exactly what settings you want the controller to have? If not, you would want the link to be able to change them, to experiment with different settings as you tune the bike to the way you want it to wor...

Have you checked their website? It includes a list of distributors that include EU.

Current limiting is done in the controller, so if it's a "30A" controller, then 30A is the approximate battery current drawn at max. (it could peak a bit higher). So whatever it's rating is..... What speed does the driven wheel go if you put the driven wheel off the ground and run it at full throttl...

All the versions are basically the same externally. I have a v1 and a v3, ones a 3T and and the other 4T, I dont' recall which is which; the stators are interchangeable between rotors, and I think I actually have them swapped right now. The only part that is different enough between them to need swa...

Some points: If a fuse (or breaker) isn't rated for at least the voltage it's used on, there is no guarantee it will be able to break the circuit under load. Heatshrink should be fine at that voltage as long as it's secured so it doesn't vibrate and rub on a frame or something; my fuse is bolted to ...

On the diode for short circuit protection. I found a better trick for this specific case, you can use a P-channel MOSFET as a one way switch that has far forward resistance and voltage drop. It won't prevent short circuits in all cases but for a charge port it might work. Keep in mind P-channels ge...

I haven't seen rims listed by gauge, so I don't know what that means. Most likely it means it's made for 14g spokes, maximum, meaning that like most hubmotor wheels, it's built with way too thick a spoke for the rim, so it'll damage the rim when you tension teh spokes, which detensions the spokes. E...

Is that this project?
viewtopic.php?f=2&t=30680

It'll be interesting to see how a prop works as a load for this type of testing....

AFAICS, he's looking to remove the speed limit, not the current limit. The shunts don't do anything to monitor or limit speed, only current. As far as removing any speed limit, if there's no separate sensor, and it's using one of the phase-hall sensors to monitor speed, then your only options to rem...

Actually it'll work better as separate layers. If something punctures the outer layer, it may just indent the inner layer, and be deflected by it. But if they're fastened together, it'll just go straight thru both of them. I can tell you for sure that's what happens with Slime protector strips glued...

It'd make a heckuva lathe motor. ;) Or a treadmill, for the entire family, with extreme uphill settings. :) If you have a need to cut a lot of wood, perhaps a sawmill. If you have a lot of wind, or water, it could also be used as a generator. If I had one here, I'd work out how to make a differentia...

If they're thick spokes (common for 12g or higher to be used on hubmotors, even though they shouldn't), then you can tighten them but most likely they can't be tightened enough to keep them tensioned correctly without damaging the rim. Replacing the rim with one that can handle the tension the thick...

Personally I recommend using female connectors on the bike itself for anything, even though that means the male pins on the charger would be exposed and could short to other things if not careful. (as long as the charger doesn't power up until connected to the battery, as many smart chargers do, the...

If you have to you can replace the right crank and chainrings to something that does allow spacers, if you find it necessary. BTW, I made a really cheap middrive with a powerchair motor on CrazyBike2; info about that is in the first part of that thread (in my signature), before I changed it to hubmo...

An email group type thing is not very useful for the purposes of ES, especially for something to store info in like a wiki.

On triples I've done this with, there's generally enough clearance if chainlines are straight. You'd have to test it on your crankset. If you have bolt-on chainrings, you could add spacers between the two rings you want ot shift between, and the one iwth the motor chain, if you don't have clearance....

https://endless-sphere.com/forums/viewtopic.php?f=3&t=94728 Or other similar threads that can be found in this list (most are not relevant but you can generally tell from the titles): https://endless-sphere.com/forums/search.php?keywords=bms+contactor&terms=all&author=&sc=1&sf=all&sr=topics&sk=t&sd=...