question for custom motor guys/gals

[seanmcg]

I finally finished my 2002 DS install of the Alltrax controller, HD F & R switch, Solenoid, and cables (Thank you ScottyB for the kit and the help). Then I bought a Plum Quick Rattlesnake motor. The cart is running top speed of 24mph, which is not bad, but it seems considerably slower than the 28-30mph that the Plum Quick people said it would run. Also, the cart is kind of "herky jerky" for lack of a better term, when you try to move slowly or go in reverse. When you first hit the throttle, the motor appears to rock back and forth before it takes off, which is really the rear axle moving.

My question is are there any tweaks I should be making in the Alltrax software that will make the cart run better/smoother? I have not made any changes to the software. Also, does the motor normally move around when you accelerate?

Any tips from someone who has done this type of setup would be grealy appreciated.

As always, thanks for any help.

Sean

[Swan]

Im hitting 30 mph with my PQ and have no herky jerky and rear end moment. How big of a alltrax did you install ?

[seanmcg]

This is what I have.


Alltrax SR48500 controller, MZJ400 solenoid, HD F&R Switch

[seanmcg]

Originally Posted by Swan

Im hitting 30 mph with my PQ and have no herky jerky and rear end moment. How big of a alltrax did you install ?

Please tell me if you can think of something I might have done incorrectly. Any chance you could upload some photos of your wiring setup? I know that's a long shot, but worth asking.

[Jake_Daddy]

You could plug in your lap top and see if your throttle signal is 1. Going smooth from 0-100% and 2. Make sure it’s getting to 100%. For the series motors I would imagine you would need a wild looking throttle ramp to get anything weird like your describing.

[Out2Sea]

This is a little out there, but it adds up and is dangerous so worth checking.

Make sure the bolts are torque correctly on the rear axle. If the rear axle is twisting during acceleration that would cause the jerky feel. Also if it twisted enough the brake cable would be pulled applying brake action. Reason for low top speed.

[HogKiller]

Definitely time to get out the laptop.

[Swan]

the only difference there is between this diagram and my cart is I installed reverse contactors and got rid of the standard F/R set up. My cart ran the same before and after that change .

[golfer188910]

Originally Posted by seanmcg

I finally finished my 2002 DS install of the Alltrax controller, HD F & R switch, Solenoid, and cables (Thank you ScottyB for the kit and the help). Then I bought a Plum Quick Rattlesnake motor. The cart is running top speed of 24mph, which is not bad, but it seems considerably slower than the 28-30mph that the Plum Quick people said it would run. Also, the cart is kind of "herky jerky" for lack of a better term, when you try to move slowly or go in reverse. When you first hit the throttle, the motor appears to rock back and forth before it takes off, which is really the rear axle moving.

My question is are there any tweaks I should be making in the Alltrax software that will make the cart run better/smoother? I have not made any changes to the software. Also, does the motor normally move around when you accelerate?

Any tips from someone who has done this type of setup would be grealy appreciated.

As always, thanks for any help.

Sean

I had a DS do this not to long ago and it was the controller not being properly programmed. Contact plumquick to see if they have any suggestions in setting up the controller & go from there... Play around with it on the laptop. It cant get much worse, right?

[seanmcg]

Thank you for all the help. I will get get working on all of this.