Can I swap battery from my old bike into new bike (both are 36v lithium)?
- Thread starter Chrisg149
- Start date
Hub motor generic puller size? I've decided that a puller tool would aid my work significantly, especially a very stubborn clutch/gears unit. Is there a general sized puller that will address all the hub motor/clutch gears extractions? Gear Pullers are listed in inch sizes, but what does that measurement relate to? I've just returned from my local Screwfix and they didn't know and had no shelf stock to compare! This might be the only time I take an ebike motor apart so don't want to overspend on an array of sizes. Is there one size that fits all? (By the way, thanks to the forum as my novice confidence is growing). Chris
They sometimes have them at hire shops, which might be cheaper if you only use it once. You can then select one that fits. There are two requirements: 1. It has to reach over the diameter of the rotor and the feet have to get enough angle to pull on the lip without slipping off. 2. The centre needs to stay on the axle, which has the awkward slot in it.
You need a dish to go over the axle. You can make one from a 2p by resting it on a say 20mm socket and smash the middle with a 10mm drift of some sort to dish the centre, then drill a small hole on the centre to act as an anchor for a pointed centre on the puller. Some pullers have a range of centres.
You need a dish to go over the axle. You can make one from a 2p by resting it on a say 20mm socket and smash the middle with a 10mm drift of some sort to dish the centre, then drill a small hole on the centre to act as an anchor for a pointed centre on the puller. Some pullers have a range of centres.
Good traditional shop with staff prepared to open boxes to test and match! Taking my motor to Machine Mart helpful staff found that the 6" puller fits all the required extractions including clutch. Only £20. Gosh, what a difference using this tool makes. Stubborn components popped off so effortlessly. I've ordered replacement Hall sensors 41F. Etched on my sensors is 41F 940 but I assume just the 41F matters?
Carefully fitted new Hall Sensor and prior to reassembling whole hub and wheel thought I'd best do a test. So reassembled as photo below, but on slowly turning the outer casing I got a constant 5v from all three hall sensors with no fluctuating off. (Two were correctly fluctuating before so changed the faulty constant 5v sensor). Any suggestions?
Attachments
Was it connected to the controller when you did the previous test? They won't switch without a pull-up resistor.
Fluctuating 5v appearing now on all three sensors
. Applying slight throttle I was hoping for some rotation (motor as above photo not in hub/wheel). However, nothing. With power off all three phase wires read linked closed circuit when continuity tested. My bike is very basic with only throttle, display and motor. I was getting wheel twitching before motor removal. Controller link below includes connection diagram as unsure if Cruise, EABS and Speed limit wires should be looped? Thanks.
24V/36V 250W 15A Brushless DC Sine Wave ebike Electric Bicycle Hub Motor Controller with right output - AliExpress 18
Smarter Shopping, Better Living! Aliexpress.com
www.aliexpress.com