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I was suggesting wiring up a 3 speed switch to slow it down. if you want to ride flat out leave it disconnected but there will be times when you only want a small amount of assistance especially to match your pedalling speed. The two white wires connect a resistor in the controller throttle...

According to your link on your first post you asked for a 201 rpm? they sent you a code 11??? I think they made a mistake and sent you a 328rpm. It really is down to luck of the draw with BMSBattery, you never know what you are going to get. Code 11 will be pretty fast, 11t freewheel is what...

What numbers or info is written on the hub casing?

Yes, i thought that as i was typing it. Probably unlikely to get 15ah LiFePo4 in an 'off the shelf' bike anyway. Lets open it up to battery chemistry to include all Li-polymer.

Not me, but a work colleague. Tried to talk him into building one but doesn't have time for a project. Sorry, but we are being lazy, i don't normally follow threads unless they are diy, so i i'm unfamiliar with new products. Hopefully some users will pitch in with recommendations well as...

Honk, your controller sounds very interesting, i hope you share the details with us. I have managed to destroy about 3 tongxin motors. Amigafan has probably put the most power through one and it survived. I broke a compression ring just by gradually accelerating from a low speed. I couldn't say...

You might want to read this thread i started. I made a few mistakes when i started using RC LiPo. Endless-sphere.com • View topic - Did i kill my new lipo pack? I now run 8s2p on my little folder. I fitted a voltmeter on the handlebar and this definately helps you judge what state of...

I am surprised. I've knobbled my 450W controller to give a max of 17A and i can climb virtually any hill.I think the controller label says 22A. Then again i am on around 52V not 36. I get around 850W maximum, which is all i need. Do you have a wattmeter? Which BPM? front? rear? do you know what...

A long time ago i hooked a scope to the phase wires of my old tongxin motor and controller. This is the result. Look at the scaling. There is 40V on the motor phase wires. Proof that the motor windings see battery voltage. Maybe the discussion ought to move towards magnetic flux...

I think karotto wanted to have more of an understanding of power ratings from the electrical point of view and not the legallity issue........

Power ratings on electric motors are there to determine the output of a motor without damage, usually to the insulation of the windings. If you put a an underrated electric motor to drive something above it's power rating, it will get hot, sometimes enough to burn off the insulation of the...

About as stealth as you will ever find......

On a car, these things are usually switched on a by a relay. The reason they do this is to prevent the contacts welding themselves closed (there is too much current going through the tiny switches on steering wheels or steering columns). So the live feed is through a fuse then through the...

Yes you are correct.

Well i got the cap off. It took a fair amount of force but it was all futile. The driver pcb is covered in a solid compound so there is no way of finding out what blew. I wish they wouldn't do this. Some people (like me) want to be able to service and fix things. I expect the pcb was fixable but...

Pretty sure i found a picture of one dismantled showing the driver chip. I thought it was here but it may have been on ES. I've been looking but can't find it. The plastic bit comes off, but how? Brute force required once again. It's been fine for the last couple of months. I got to rely on it...

Sorry for bringing an old thread up. Anyone know how to remove the white plastic end cap on these things? I've tried to unscrew it, pulling it with mole grips and levering it with a screwdriver. It's gonna be a hacksaw next. I connected up my bike this afternoon with my soft start switch...

There was something in the Westcountry air this morning. Plenty of expletives! What a total b******d. This is the worst job on a bicycle i have ever encountered No way was this thing coming out without extreme force, hence me asking the question about the direction of thread. After using a...

Ah thanks very much....tools packed up and i'm in the warm now. It's nice to know i'm forcing it loose instead of tighter. (You both posted before my editing).

Its still stuck. I borrowed a better quality splined tool as my cheap one was in danger of breaking. The left side is definately RH, so its likely the chainset side is probably RH too? I'm going to try again tomorrow.Its full suspension so i need to get a jack underneath as support. edit: I...