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Old 08-17-2009, 10:49 AM
  #17197  
rc pete
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Originally Posted by Robio
Just picked up a Cyclone. I'll be running 17.5. Orion has 3.5 as starting point. What gearing configurations does the chassis like best? I have a 47 & 52 pinion in my box.

Thanks. Rob.............
Are you running the Orion 17.5, or just looking at their gear chart?
The gearing will depend on the track and motor, Rob.
For the most part, you'll be between 3.5 and 4.7 FDR. Bottom end of that range for a higher torque motor on a large asphalt track. And near the top end of that for a higher RPM motor on a tighter track.

For example, I found the Orion 17.5 to have less top end, and ran it on an indoor carpet track at 3.9. On the same track, I run the 17.5 ORCA (higher RPM motor) at 4.6

On the TC (with the 18tooth pulleys) I usually start with the 93 spur for spec racing. With that, you can go from 4.9 to 3.6 FDR using 41 to 55 pinions.
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