Super 77 Ring and Pinion

Ollie88D · Sep 14, 2018

I know Oliver offered 5 different ring and pinion combinations for the 88, but does anyone know how many R&P combos were available for the 77/S-77?
Currently goes 3 mph in 1st gear at 1500 rpm with 16.9-38 Firestone's.
Thanks!

J. Schwiebert · Sep 14, 2018

To start with what are the last 3 digits of your serial number 702 or 705?

Ollie88D · Sep 14, 2018

Last three digits are 702.

J. Schwiebert · Sep 15, 2018

There you had your choice of the 702 and the slow speed 705. The 702 was a set of 11/ 50 gears 2.45 MPH @ 1600 on 11-38 tires @ 1600 RPM or 705 with 9/48 bevels which was 1.91 MPH at the same RPM and the same size tires.

Super 77 Ring and Pinion

Ollie88D

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J. Schwiebert

Well-known Member

Ollie88D

Member

J. Schwiebert

Well-known Member

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