Recent content by rynhardt

Have a look here for inspiration: https://rewinch.com/products/rewinch

If you use a chain with a smaller pitch, you can get larger ratios. Have a look at the OSET bikes for example. I'm using #219 (gokart) chain, with a 10T front and 121T rear.

What I meant by being out-of-range is that the throttle signal may simply be too high (which is why the throttles come in different voltage ratings). I can't remember if the max voltage the controller will accept is 3.8V or 4.2V. Anything above that it will simply not activate the motor. You...

Try moving to a 36V or 48V throttle, which you can buy from OSET. The throttle sends a voltage to the controller, which for your new battery setup may be out of the permissible range. The plastic throttles can break and go past the detents which could cause a WOT condition - the controllers are...

This is probably a bit out there, but your requirement for low rpm, high torque reminds me of marine thrusters. Maybe have a look at rim-drive thruster configurations and see if anything there might be useful..

Not trying to dissuade you from getting a BMS, but it's something you can always add later. It'll save you from swopping the 3 main leads and 3 balance leads each time you want to charge, which is perhaps a minute of your time. The fuse, contactor and pre-charge circuit is something you're...

I ziptied my phone to the breastplate and had a quick blast around the garden after work. Not great footage, but super fun :D JeOxFa3I5SA

You will need both a fuse and a switch/relay/contactor, rated for the max amperage you expect to draw. I've got an Allbright SU-2025 48V switch/relay/contactor (blue box) with a 200A fuse (yellow box). This relay is switched by the magnetic lanyard similar to what you have. To be more precise...

Yeah I think you've got it. :-) Splitters for both the balance leads and the main leads. Your red boxes exposed in a panel. :thumb: The word "manifold" I used is not the best word. "Patch bay" or "patch panel" would have been better. Basically a hole cut in a box with your connectors (red...

If you use 3 x 6s2p (28Ah) in series, then each 6s2p (28Ah) pack is effectively one battery. So you end up with 3x 28Ah batteries in series again, which you can charge all at the same time (since your charger can handle up to four batteries). I think once you've paralleled two 6s packs, you...

If you use the balance leads to keep the cells connected in parallel during use, then I don't think it makes much difference how you connect the packs. Either 3 packs in series, and then these 2 in parallel, or 2 packs in parallel and then these 3 in series. You may want to consider cutting and...

Wow, that looks like a righteous unit! :thumb: I'm going to be very keen to see how this turns out - I might have to upgrade too :)

I finally got around to getting the video done. yay! So here's the 121T sprocket in all its glory 8) c7_HTOpVCCo

Theoretically, yes. However, no two cells are exactly the same, and no two packs are exactly the same. When you have a bunch of cells connected in series, there's only one current path through all the cells, and it will be the same. When you have cells/packs in parallel, the current...

Well, I've got the following bikes with different battery packs: Oset 20 with 2x 6S 16AH LiPo's (48V controller) Oset 16 with 2x 5S 5AH LiPo's (36V controller) GasGas frame with Oset parts, with Oset 20Ah48V Li-Ion battery pack.