The gearcase on the engine in the top (first) picture is a positively a PR65. It may have been a "factory" (Johnson), or a Homer Price, or in later years,(1949 or so) a Hubbell. I assembled several dozen when I worked for Pep.
Homer Price had his made by prisoners in the Ohio State prison in the late '30s. I don't know which functions or what parts were made by the prisoners. They were not considered as good as "factory".
There may have been other manufacturers of the PR65 units that I don't know.
Some of the cases on the pictures further down may have been PR55s. The primary ddifferences were that the 55 was a two piece unit. i. e., the pinion shaft, gears were in the upper piece and the propellor shaft, gear, and bearings were in the lover half. The gear adjustment was through the front of the foot and there was a separate nose piece.
The PR65 was a single piece. Same was true for the SR65. There was a SR55 and a KR55. Due to the depression and all there was never a KR65 unit made, just PR and SR.*
The 65s were a single piece and were assembled thruough the bottom. That took some trickery and cussing to perform. The skeg had a flat top and three screws that closed up the foot and held the skeg.
The SR and PR 55s had a 12-21 gear ratio. The SR and PR 65s had a 13-19
I hope that more information than any of you ever wanted to know
Russ Hill
*Models above:
KR = A
SR = B
PR = C. If you don't know that, I'm really casting pearls before swine.
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