Shudder on take off

[cheapjeep2]

Originally Posted by tej

I had the same problem with an Alltrax controller. I was able to program out the shudder by changing the ramp up and ramp down rates. Also, mine works never did shudder with the standard controller. I put the standard back on just to make sure.

Great, good to know that you can do that, my MCOR was bad though.

[abtgtown]

Ok then; I'll start looking for the best deal on an MCOR! Thanks for everyones help!

[scottyb]

tej, how low did you have to go to get the shudder out? What size controller?

[tej]

scottyb, went down to 3 and 3 and the shudder went away. With turbo on still would have plenty of take off. This was with a 650 controller.

[scottyb]

Thanks for the info

[rabbitreborn]

Originally Posted by tej

I had the same problem with an Alltrax controller. I was able to program out the shudder by changing the ramp up and ramp down rates. Also, mine works never did shudder with the standard controller. I put the standard back on just to make sure.

The reason for this is that the bigger controller begs for more power from the batteries..... if your batteries are at all weak, this will become evident in a shudder on the cart. Programming it out is masking the issue. Load testing the batteries is tricky at best. To get a true image of the battery condition you would have to do a full discharge test.