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Old 02-05-2007, 11:19 AM
  #402  
bullfrog_racer
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Join Date: Feb 2007
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Default Ratios on a large track?

Hi guys, was wondering if anyone can help me, I am new to RC and am running up my Cyclone S, I am racing on a larger circut, as Nitro cars run on it as well. It has a long back straight where the nitros hit 2nd gear about halfway down. but also for the electric cars have some tight turns etc.

I run out of legs down the back straight and loose to much ground. I am told for this circut I need to get a 51mm rollout, the car was keeping up well apart from the back straight.

I am currently running a 96/48, tyres are 62mm(diameter), we race Stock silver cans (14500 RPM), which gives me a rollout of 39.93, Cyclone S ratio is 2.4375. I am still using 64 pitch but may have go to 48 pitch maybe something like 69/42 for a rollout of 48.62mm.

I am just a bit worried that they will not mesh properly if I get it wrong, any suggestions appriciated.

One more thing, what are the best value upgrades for speed and performance?

Great thread best one I've come across, hopefully as I learn I will be able to contribute also.

Thanks
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