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Ok, Friday night I decided to race a JL TJet in our Trans Am class at Whiterock Raceway. And of course running an untried chassis has it's problems. The few changes I made to the chassis for racing are as follows.
1) Limit pick up shoe travel
2) Brass heavy front end
3) Slip on silicone rear tires, approx. .370 diameter
Other than running the chassis to break it in, these were the only changes made. I had plenty of straight away speed but the turns became a problem.
It became difficult to keep the chassis in it's powerband and still mantain control in turns. Second problem was a lack of coast in the chassis. When I got out of the throttle the chassis would practically stop. But that is just a different style of driving that I am not used too.... (Yet..) Unfortunatly, about half way through the race the chassis became somwhat jerky. (Not ME, the chassis..)
And gear mesh problems could be heard. Despite the noise and problems I continued to race the chassis and finished the race. (7th out of 8) Taking the car apart after the race I found that the driven gear and or pinion gear had walked up the shaft causing the shaft and gear to bind at times.
I pressed the driven gear back into place and the chassis runs more smoothly than it did during the race. Maybe brass gears are the answer here. And I might loose top speed, but a 12 tooth gear should be eaiser to drive.....
Now what kind of expirences have you guys had with these things?
Scott
1) Limit pick up shoe travel
2) Brass heavy front end
3) Slip on silicone rear tires, approx. .370 diameter
Other than running the chassis to break it in, these were the only changes made. I had plenty of straight away speed but the turns became a problem.
It became difficult to keep the chassis in it's powerband and still mantain control in turns. Second problem was a lack of coast in the chassis. When I got out of the throttle the chassis would practically stop. But that is just a different style of driving that I am not used too.... (Yet..) Unfortunatly, about half way through the race the chassis became somwhat jerky. (Not ME, the chassis..)
And gear mesh problems could be heard. Despite the noise and problems I continued to race the chassis and finished the race. (7th out of 8) Taking the car apart after the race I found that the driven gear and or pinion gear had walked up the shaft causing the shaft and gear to bind at times.
I pressed the driven gear back into place and the chassis runs more smoothly than it did during the race. Maybe brass gears are the answer here. And I might loose top speed, but a 12 tooth gear should be eaiser to drive.....
Now what kind of expirences have you guys had with these things?
Scott