Accelerator(Throttle) Response

[__JAG__]

I think the accelerator response is about the only thing I dont like on my new i40. Its very hard to maintain a constant speed on the low end. Almost like an on off switch. Anyone else had this issue? This is on the new 2022 with icon controller with firmware 200.

I'm going to dig into the software and see what I can find out, but I dont see a throttle curve like I expected.

On the 05 Paddle tab I see the following:
05.01.01 - Throttle Type = 2 (2:AI_DI) *(I'm assuming this means it has to make the limit switch and it uses the pot once that is made)
05.01.02 - Throttle Dead-band = 0.5 *(This seems kind of high to me. I'll probably lower it down a little.
05.01.03 - Throttle Max =4.5 *(Not sure why this is set at 4.5 and not 5. I'll check my pedal range again, but pretty sure it makes it to 5v)
05.01.04 - Throttle Offset = 0
05.01.05 - Throttle Map1/4 = 10%
05.01.06 - Throttle Map1/2 = 45%
05.01.07 - Throttle DI Volt Filter Gain = 4Hz
05.01.08 - Throttle DI Ramp up = 3000 *(I'm a little confused by this since the max is listed at 30)
05.01.09 - Throttle DI Ramp Down = 1000 *(Max listed at 1000)
05.01.10 - Throttle Min Speed = 0

So I would think the Throttle Map parameters would create a curve. But it sure does not feel like one. I'll probably adjust these and see what effect they have.

[__JAG__]

Problem solved. I changed:

05.01.02 - Throttle Dead-band = 0.25
05.01.05 - Throttle Map1/4 = 25%
05.01.06 - Throttle Map1/2 = 50%

Much better and smoother on the bottom end.

[BobInDaytona]

Originally Posted by __JAG__

Problem solved. I changed:

05.01.02 - Throttle Dead-band = 0.25
05.01.05 - Throttle Map1/4 = 25%
05.01.06 - Throttle Map1/2 = 50%

Much better and smoother on the bottom end.

I was going to mention exactly what you set 1/4 and 1/2 at which I have put into many carts... You beat me to it!

[__JAG__]

Originally Posted by BobInDaytona

I was going to mention exactly what you set 1/4 and 1/2 at which I have put into many carts... You beat me to it!

Yeah not sure why they set them like that from the factory. Throttle response was horrible.

[Lambert]

I have the same issue of the on/off feel of the throttle, although I experience it at any throttle setting. The cart is either accelerating or decelerating with no in between. I tried changing the dead band from .1 to 5 and could not tell any difference in performance. I did change the map settings to 25% and 50% as was suggested. There must be some other setting that is causing this but haven't found it yet.

[__JAG__]

Originally Posted by Lambert

I have the same issue of the on/off feel of the throttle, although I experience it at any throttle setting. The cart is either accelerating or decelerating with no in between. I tried changing the dead band from .1 to 5 and could not tell any difference in performance. I did change the map settings to 25% and 50% as was suggested. There must be some other setting that is causing this but haven't found it yet.

I can upload all my settings and post them if you want to compare. But changing the map settings is all it took on mine. Have you monitored your throttle voltage? Is it nice and smooth? My switch comes on when the pot voltage is around 0.2v and I get a max of 4.7, so i changed my max from 4.5 to 4.7.

[_Chuck]

Originally Posted by __JAG__

Problem solved. I changed:

05.01.02 - Throttle Dead-band = 0.25
05.01.05 - Throttle Map1/4 = 25%
05.01.06 - Throttle Map1/2 = 50%

Much better and smoother on the bottom end.

Also just picked up a used 2022 I40 cart and the throttle does nothing for the 1st bit of travel then nearly launches the cart through the garage wall in an instant and it's flat after that :-)

Is this the type of response these settings helped to correct for you?

[__JAG__]

Oh that’s good info. Is that a manual? Do you have the full version you can share?

[Lambert]

The speed limit here in our HOA is 20 mph. Since I have trouble maintaining this speed with the peddle as described here in this thread, I decided to lower my top speed limit to 20 mph. I figured that I could just hold the peddle full open and let the motor controller maintain that speed for me. This worked as intended and I am much happier with it this way.

What I didn't expect though is that the throttle response is now much more controllable throughout its range. The speed control has a much nicer feel to it for me and I don't have to constantly make fine adjustments to maintain a desired speed.

I know that lowering the top speed is the opposite of what most here are trying to achieve. But for those like me who don't care about high speed, this is an option.

[__JAG__]

Originally Posted by Lambert

The speed limit here in our HOA is 20 mph. Since I have trouble maintaining this speed with the peddle as described here in this thread, I decided to lower my top speed limit to 20 mph. I figured that I could just hold the peddle full open and let the motor controller maintain that speed for me. This worked as intended and I am much happier with it this way.

What I didn't expect though is that the throttle response is now much more controllable throughout its range. The speed control has a much nicer feel to it for me and I don't have to constantly make fine adjustments to maintain a desired speed.

I know that lowering the top speed is the opposite of what most here are trying to achieve. But for those like me who don't care about high speed, this is an option.

Oh i noticed the same as well and it totally makes sense. The resolution of your speed control will be much greater the lower your max speed. There is not a transmission. So 50% pedal will be 50% speed, etc. Unless you have a throttle curve programmed in.