Good metal worker in london?

[johnc461165]

I know cwah wanted the forks widened, but don't you think this is a bit drastic?

Boy did I not know you would get me on this,

Hope he is bombing along on his bike soon.

What a great site this is full of people wanting to help each other I can do the mechanics but I will one day need electronics advise and I know where to come.

 

[wurly]

You need an electronic throttle interface, which stops full power when you open the throttle. The guys on ES have made various solutions, but there's none that you can buy. I seem to remember some new functions for the Speedict coming: Was throttle ramp one of them? Ideally, the number of amps needs to be limited by speed, so that you maybe have a max of 10amps until you get to 10mph and then ramp it up with speed, but for that you need to program a microprocessor. Another way is with a current control controller as opposed to the normal speed control. The Cycle Analyst and the Speedict can both simulate current control, which, in theory would be better, but the guys on ES that tried the CA reported unsatisfactory results. Maybe Speedict is better.

I've built a current control circuit that clamps the throttle signal, it's very similar to the cycle analyst. It measures the current from the battery and if it gets too high (set with a pot) the signal gets reduced. The problems they were having was the same as i have experienced with my circuit. You get a pulsing on/off motion from the motor, the more highwer powered setups the worst it is. What i'm trying to do, is ramp the throttle signal up or down to eliminate it......
A major design on the output stages is required....work in progress.
The speedict seems like a good solution and is something i might buy if the current limiting application works well. I assume this isn't available yet?

 

[Deleted member 4366]

I've built a current control circuit that clamps the throttle signal, it's very similar to the cycle analyst. It measures the current from the battery and if it gets too high (set with a pot) the signal gets reduced. The problems they were having was the same as i have experienced with my circuit. You get a pulsing on/off motion from the motor, the more highwer powered setups the worst it is. What i'm trying to do, is ramp the throttle signal up or down to eliminate it......
A major design on the output stages is required....work in progress.
The speedict seems like a good solution and is something i might buy if the current limiting application works well. I assume this isn't available yet?

I'm still working on mine using a microprocessor. I've got a speed sensor and I'me trying to limit current by speed so that under 5mph you only get 5A max, between 5 and 10 mph say 8A max and so on, but he programming is a bit tricky.