Friction drive motor issues

[VINTAGEBASS]

First of all thanks for the add, this is my first friction drive build and I have been reading the forum for some time. I have built a friction drive using the standard Rc parts but have found that as soon as I turn the power on the drive starts running at a low RPM even though the throttle hasn't been pressed. I have now tried a different servo tester, and changing the parameters on the ESC. The issue does not arise when it is unmodified. Could this be a dodgy ESC? Any help would be gratefully appreciated

 

[amberwolf]

What's an "add"?

If it runs when "unmodified", what did you do that modified it? Whatever that is should point to what makes it not work.

 

[VINTAGEBASS]

Add-Allowing someone to join the forum

 

[VINTAGEBASS]

I modified it by removing the potentiometer and adding a hall throttle same as seen in many other builds. I also tried a different build using a 10kohm resistor and a momentary switch as shown in bicycle booster pack build http://www.instructables.com/id/Bicycle-BoosterPack-a-3D-Printed-Portable-Electric/?ALLSTEPS both of these types caused the same issue.
motor runs low rpm with throttle/switch not applied. It appears to be picking up a residual current from somewhere

 

[amberwolf]

I don't know about RC ESCs but some old brushed controllers faulted when powered up without the correct resistance on the throttle (so they couldn't work directly with hall throttles, nor could they work with a simple resistor/switch; not only would they fault if resistance was wrong, but could fault if voltage was not zero at the input).

Some other controllers that use halls could fault if the voltage was not at the lowest end of the expected input range--so if it was zero becase of the button not eing pressed and no voltage diviider / pullup, then lb

 

[VINTAGEBASS]

Thanks I am going to try to wire the original potentiometer back in and somehow have a stop/start button wired into it

 

[green666]

Hall sensor and perimeter not compatible. You can't use perimeter instead of hall sensor.
It depends on controller. Use adequage accellator on your controller.

 

[amberwolf]

perimeter

 

[VINTAGEBASS]

Im no closer grrrr. Does anybody make a controller which I could use a PAS/reed switch sensor so I could use it as a pedal assist friction drive not throttle?