3 speed switch - how does it work?

[davidsvoboda]

Hi, I have this switch with my 3000W mid drive kit - http://www.turbobikekit.com/Cyclone-3-Speed-Switch-for-cyclone-controllers?filter_name=3%20SPEED and I would like to be able to further limit my power to as low as 20% - the kit only allows for 60 per cent..

Is it possible to adjust the electronics somehow or can I buy some other switch?

Thank you.

 

[davidsvoboda]

This is the kit and controller I have - http://www.turbobikekit.com/cyclone-geared-electric-waterproof-ebikekit-1800watt-3000watt-36volt-72volt?filter_name=3000W

60A max limited is also too much.

 

[turbobikekit.com]

When you attach the 3 speed switch on a Cyclone controller and change the buttons does the amps discharge
work lower and lower top speed?
Do you have wattmeter or Amps meter so you can check it ?

 

[davidsvoboda]

you misunderstood my problem, I want to be able to further limit the power of motor- to as low as 30%.. as low as 500W of the motor if possible.

 

[turbobikekit.com]

You can lower the voltage of your battery in case you have lipos
What battery do you have?

 

[davidsvoboda]

You can lower the voltage of your battery in case you have lipos
What battery do you have?

i think li-on, but wouldn't that kills the battery? how about i buy different controller?

 

[r3volved]

You could add a pot on the throttle voltage, or a multi-position switch with resistors at each position to limit throttle voltage to set levels.

 

[davidsvoboda]

You could add a pot on the throttle voltage, or a multi-position switch with resistors at each position to limit throttle voltage to set levels.

how? adding positions to the speed switch with resistors?

 

[r3volved]

well a multi position switch made for the cycle analyst (for example) is just a regular switch with resistors added at each position.
So it sees 3 different voltages and can do whatever based on the voltage it sees - based on the position.

for example, you could add a three position switch inline with your throttle voltage (red) that has pos1ff, pos2:50%, pos3:100%.

pos1 would have no throughput.
pos2 would have a resistor to drop 5v in half.
pos3 would have no resistor and allow all 5v.

or just a twist-pot inline and you can just 'tune it' to reduce your throttle signal.

 

[davidsvoboda]

so I could connect this to my set up? http://www.ebikes.ca/product-info/cycle-analyst-3.html

 

[r3volved]

Ya the CA + 3pos switch from Grin work together. You can also use a potentiometer on the aux connection to CA.

Preview line shows measured voltage of auxiliary potentiometer input, the equivalent % full scale limit that this voltage corresponds to, and the limit value that is being scaled (amps, speed, watts etc.)

Function: This determines the function of the auxiliary potentiometer input:
- Off: Voltage on the POT pin is ignored
- Limits: Voltage on the POT pin is used to scale one of the CA’s limit parameters
- Presets: Voltage on the POT pin is used to switch between the different mode presets, if mode presets are enabled.
Scale Lim: This option only shows up of “Limits” are selected as the function for the Aux Pot input.
- Amps Lim: Voltage on the POT pin linearly scales the current limit, from 0 to Max Amps.
- Speed Lim: Voltage on the POT pin linearly scales the speed limit, from 0 to Max Speed.
- Power Lim: Voltage on the POT pin linearly scales the power limit, from 0 to Max Watts.
- PAS Level: Voltage on the POT pin linearly scales the proportional PAS assist, either your PAS Watts in AutoPAS mode, or your Assist Factor in TrqPAS Mode.
Min Aux In: This sets the lower range of the auxiliary potentiometer input. Any voltages less than this will be treated as zero.
Max Aux In: This sets the upper range of the auxiliary potentiometer input, voltages higher than this will be treated as 100%.

With the CA, you are able to set your own limits on various things (speed/watts/amps/pas/etc) based on the position of the switch.

With a pot inline on the throttle, you're essentially just tuning your max-throttle output.

 

[turbobikekit.com]

i think li-on, but wouldn't that kills the battery? how about i buy different controller?

Your controller works with 36-72v so you can work with 36volt battery also and 3 speed switch the wattage will go really low
IS the problem the high power, high torque, battery, or the law?

 

[davidsvoboda]

i think li-on, but wouldn't that kills the battery? how about i buy different controller?

Your controller works with 36-72v so you can work with 36volt battery also and 3 speed switch the wattage will go really low
IS the problem the high power, high torque, battery, or the law?

just too much power, which means it is hard to use the battery efficiently with the current throttle sensitivity.
I want to be able to limit the maximum power output to as low as 500 or 750W.

 

[davidsvoboda]

but the law is also problem in England where I am moving, but there is nothing I can do about it I guess?

 

[turbobikekit.com]

Best Suggested Solutions 1-3
1.You can take a speed limiter at 25km/h
2.Battery 36volt with speed limiter at 25km/h

Can you please inform us the voltage of your battery?
Thank you

 

[John in CR]

A 3 speed switch does not necessarily limit power. It simply applies a percentage reduction to the throttle voltage. While it does lower power, it's more of an indirect result.

Changing the current limit is a more sure way to limit power, and you may not even have to give up speed, or at least not as much speed, in the process.

 

[davidsvoboda]

Where can I get some speed limiter for it?

My battery voltage is 48V 15ah. Liion, it is pretty powerful, to fit the needs of motor - 100A max discharge.

Best Suggested Solutions 1-3
1.You can take a speed limiter at 25km/h
2.Battery 36volt with speed limiter at 25km/h

Can you please inform us the voltage of your battery?
Thank you

 

[davidsvoboda]

A 3 speed switch does not necessarily limit power. It simply applies a percentage reduction to the throttle voltage. While it does lower power, it's more of an indirect result.

Changing the current limit is a more sure way to limit power, and you may not even have to give up speed, or at least not as much speed, in the process.

But how do I change the limit? Exactly? I am an electrician noob, so would need exact directions..

 

[turbobikekit.com]

But how do I change the limit? Exactly? I am an electrician noob, so would need exact directions

Here is the link for speed limiter, that does not lower the discharge rate or wattage, it just limits the vehicle at 25km/h
http://www.turbobikekit.com/electric-electronic-parts-voltage/mid-drive-other/cyclone-P.A.S.-and-speed-limiter