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I have a bike with rear suspension, I need to replace the shock absorber. I have measured various lengths and diameters. However, I'm not sure about the strength, it is marked "550" which I think is 550 lbs/in of travel. I've seen somewhere else that this is rather low. Any idea what it should...

It's not on there, presumably too old.

This is not a specifically e-bike question, but I am considering moving my motor to this bike, so I hope it is permitted. I need to buy a new shock absorber for my mountain bike. The current one (marked DNM torch) has snapped in half. First I need to understand a bit more about how they work. I...

I didn't realise it was that sort of site :).

Noone bothered t answer my original query, so I can't be bothered to post the details :).

I've used torque washers without torque arms. I've been riding on mountain bike trails and have had no problems. I think torque arms are probably OK with a 250W motor. [Solved]

Old and unavailable, so I've made my own battery mount.

Thanks for confirming my guess.

I've been given a bottle battery by someone who no longer has the bike. I haven't got the mounting plate and although there are plenty of bottle battery mounts on ebay for example, they are different to this one. The battery has to be swung in from the side, so the top is a bit lopsided. It is...

I've been given a 36V bottle battery by someone who no longer has the bike. I've taken the casing off to check it and was surprised to see that there appear to be two empty spaces for cells, so was concerned someone might have removed the cells leading to an unbalanced battery.* There are three...

I've got a mountain bike with aluminium front forks and a 250W motor. The motor shaft has a 4mm long, 12mm diameter step with 10mm flats for Bafang-style torque washers. However I have read elsewhere that on aluminium forks the washer can force apart the dropouts so I should use a torque arm...

I'll plug it all together and see what happens. I was hoping there might be some standard wire colours which someone would recognise.

I have a controller from a crashed bicycle. The battery, motor and display cables are obvious, as are the two small connectors for lights. There is one remaining cable which was ripped out of the bottom bracket with red/black/grey/brown wires ending in a small white plug plus green and yellow...

I have a controller marked LSW669-16 X100-7011-816 and CE:G3M20211-1592-16 on which the battery, motor and display cables are obvious and there is a 6 wire cable to the Wuxing S29X-DX throttle and display which has three battery level LEDs and a big red button. There are also: a medium sized...