12 bolt ring and pinion question

[SSDiv6]

Originally Posted by GSlaton

Does anyone know of a ratio available between the 5.57 and 5.86? The 5.57 is a 7/39 and the 5.86 is 7/41. A 7/40 would be 5.71. Is there a technical reason that the 7/40 cannot be made?

thanks

Gary

Would not recommended it.
Ring and pinion gears are conjugated by design and matched to each other during the manufacturing process. They are also lapped between each other and the reason why they have different pinion height specs on identical gear set ratios.