Topic: Road racing final drive gearing??

[Rocketman]

The fronts I sourced from Sprocket Specialist use the stock Honda retainer that fastens to the sprocket with two 6mm bolts.  Can't recall ever closely comparing them to a OEM Sprocket to see if there were any differences.

[bwaller]

That's good about using a stock retainer, early ones didn't. I prefer a thicker spline section, not always easy to find.

[slikwilli420]

PBI was the original supplier of my 17 tooth front through rebel gears. They had the thicker flange at the spline. I'll try them and report back.

[gschuld]

FWIW, at Mosport(2016), both of Harry Peters cb750 racers ran 17/46, while a stable mate in the 412 bike(with factory carbs) ran 17/47 gears.  Mosport is considered a fast track by most on account of the LONG slightly uphill section(+/- 130mph by the end).  The Harry Peters bikes(both factory frame and the Rickman) were fast...

George

[bwaller]

That's helpful George. Justin's #412 is a nearer stock engine, but Harry's is the same size bore Matt will use. I think Justin should use an larger rear for there.