Setups
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Gearing
Stock gearing for the Schumacher Cougar KC, with common pinions and their ratios.
| Pinion | Spur ÷ pinion | FDR |
|---|---|---|
| 18T | 4.61 | 9.68 |
| 19T | 4.37 | 9.17 |
| 20T | 4.15 | 8.72 |
| 21T | 3.95 | 8.30 |
| 22T | 3.77 | 7.92 |
| 23T | 3.61 | 7.58 |
| 24T | 3.46 | 7.26 |
| 25T | 3.32 | 6.97 |
| 26T | 3.19 | 6.70 |
| 27T | 3.07 | 6.46 |
| 28T | 2.96 | 6.23 |
| 29T | 2.86 | 6.01 |
| 30T | 2.77 | 5.81 |
| 31T | 2.68 | 5.62 |
| 32T | 2.59 | 5.45 |
Shaded rows are the pinions most 1/10 2WD buggy setups run on the stock spur.
What pinion should I run?
Tell us your motor and track and get a starting pinion for the Schumacher Cougar KC, with the range racers in the class run.
Get a recommendation →Shop pinion gears at AMain →What pinion gear should I use on the Schumacher Cougar KC?
It depends on your motor and the track. In the 1/10 2WD buggy class, racers gear by final drive ratio: 6T and below near 9.40, 7.5–8.5T near 9.22, 17.5T near 6.48. On the Cougar KC's stock 83T spur that is about 19T for 6T and below, 19T for 7.5–8.5T, 27T for 17.5T. Tight tracks gear down, open tracks gear up. For a starting pinion matched to your motor, use the So Dialed Pinion Recommender with the Cougar KC selected.
What is the internal ratio (transmission ratio) of the Schumacher Cougar KC?
The Cougar KC has an internal ratio of 2.1:1. Final drive ratio = spur ÷ pinion × 2.1. With the stock 83T spur, a 18T pinion gives an FDR of 9.68 and a 32T gives 5.45.
How many teeth is the stock spur gear on the Schumacher Cougar KC?
83 teeth. Changing the spur moves every pinion's ratio at once; most racers leave the spur and tune with the pinion.
Kit setup
Kit shock setup. Part numbers link to AMain.
- Front
- 500 cst
- Rear
- 400 cst
What shock oil does the Schumacher Cougar KC come with?
Out of the box the Cougar KC runs 500 cst front, 400 cst rear (CORE oil), on 2 x 1.5mm - White (#U3670) front, 2 x 1.6mm - Black (#U7086) rear pistons. That is the kit setup; you will need to adjust it for your track conditions. The RC Setup App can help dial it in.
What springs does the Schumacher Cougar KC come with?
The kit springs are 4.0lb Black (#CR183) front, CORE Green (#CR186) rear. Stiffer springs suit high grip and big jumps; softer springs add grip on slick or bumpy tracks.
Setup Help
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