Description
This #415 chain made by Regina Gold is a high quality chain that we have had great success with our Jr. Dragsters. Comes in a 5 foot length.
Determining what size sprocket to get is dependent on what size gear ratio you would like to run. At Half Scale we have found that the ideal gear ratio is 6:1. We have found that with a 5:1 ratio the clutch never completely cycles and diminishes performance and a ratio of 7:1 would cause the engine to rev too high and the car to launch too hard.
To Calculate Gear Ratio:
(Rear Sprocket Teeth #) / (Front Sprocket Teeth #)
| #415 | Rear Sprocket Teeth # | ||||||||||||
| 64 | 65 | 66 | 67 | 68 | 69 | 70 | 71 | 72 | 73 | 74 | 75 | ||
| Front Sprocket | 9 | 7.11 | 7.22 | 7.33 | 7.44 | 7.56 | 7.67 | 7.78 | 7.89 | 8.00 | 8.11 | 8.22 | 8.33 |
| 10 | 6.40 | 6.50 | 6.60 | 6.70 | 6.80 | 6.90 | 7.00 | 7.10 | 7.20 | 7.30 | 7.40 | 7.50 | |
| 11 | 5.82 | 5.91 | 6.00 | 6.09 | 6.18 | 6.27 | 6.36 | 6.45 | 6.55 | 6.64 | 6.73 | 6.82 | |
| 12 | 5.33 | 5.42 | 5.50 | 5.58 | 5.67 | 5.75 | 5.83 | 5.92 | 6.00 | 6.08 | 6.17 | 6.25 | |
| 13 | 4.92 | 5.00 | 5.08 | 5.15 | 5.23 | 5.31 | 5.38 | 5.46 | 5.54 | 5.62 | 5.69 | 5.77 | |
| 14 | 4.57 | 4.64 | 4.71 | 4.79 | 4.86 | 4.93 | 5.00 | 5.07 | 5.14 | 5.21 | 5.29 | 5.36 | |
| 15 | 4.27 | 4.33 | 4.40 | 4.47 | 4.53 | 4.60 | 4.67 | 4.73 | 4.80 | 4.87 | 4.93 | 5.00 | |
