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Old 12-07-2006, 10:58 PM   #1
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Default Rollout for Dummies??

Can someone please explain this a little more.


I hear people say for 540 that shoudl start with a rollout of 44mm and then go from there yet at other track (tighter ones) they use a lower rollout.

What is better higher or lower???

I am running 540, schumacher mission (1.8:1) with rubber tyres. If this helps more.

I have a 86 tooth spur and also a 92 tooth spur to use.

The track in question is a pretty tight small on-road asphalt in-door track if this helps???

Thanks
Robert
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Old 12-07-2006, 11:53 PM   #2
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Which motor? 540 is the size of the motor, but there are many different kinds.
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Old 12-08-2006, 12:20 AM   #3
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I think he means silver can 540.
Rollout means that for every one turn of the motor the car travels 44mm.
The bigger the rollout number the higher top speed but less acceleration and vise versa.
A large or high rollout is on very large open tracks and lower rollouts are used on tighter tracks becasue you need the acceleration.
Run the 92 tooth if you can because a larger spur gear is more effecient.
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Old 12-08-2006, 01:46 PM   #4
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Yes the 540 silver can is the motor is question.

Thanks for that. I thought that was the case.

But how do you know what is best??? And where to start?

Robert.
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Old 12-08-2006, 02:26 PM   #5
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Usually, your local track racers will help you with a rollout to start with. Then you'll just have to experiment by changing your gear ratio and watching your fastest lap times. Eventually, you'll find the best one that suits your driving style. Let me explain "suits your driving style". As a new driver, you will notice that your lap times will be pretty fast when you have gear low (small pinion, big spur), good for acceleration. That's because, when you drive sporadically, or make mistakes, the good acceleration will help you overcome these problems. As you become a better and smoother driver, you won't depend on the acceleration as much.
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