R7 overdrive

[Rickricca]

I need some transmission help for my 1940 c25

 

has an r7 overdrive and won’t hold second gear on decel

 

anybody know how to find George asche?

 Thanks 

[dpollo]

jumping out of second is not an overdrive problem, the trouble will be found in the main box in the syncro unit or the bearing between the input shaft and the mainshaft or it could be the pilot bushing in the crankshaft.  Also, a misalignment of the  transmission and bell housing ( not likely, but possible)

 

This can be an elusive problem to correct.

[Rickricca]

I knew it was in the main box, I should have been more clear. I identified it as an r7 to designate which trans I have. Apparently, many years are interchangeable. I may hav found an r10 for a reasonable price, but I might just bite the bullet and buy a recon from George asche. After all, this thing is 77 years old

 

thanks for your expertise 

 

 

 

 

[dpollo]

The R 10 works well and will be easier to service.   The  ratios in the 40's main box with or without overdrive are more pleasing to some drivers as second  is higher.

The gear set will fit in the later box .

[Rickricca]

I thought about trying a small parts kit in mine but that seems a little intimidating. I would hate to have to pull it twice

 

 

 

 

 

[Ernie Baily]

Hello,

 

I've been working with George Asche on issues with my R10. He is a really a nice gentleman(86yrs young). His phone is 814-354-2621

 

Good Luck!

 

Ernie Baily

[dpollo]

just changing the pilot bushing in the crankshaft might help.

[Rickricca]

My experience has been that a worn pilot bushing typically causes problems with direct, and not reduction gears, but what do I know?

[Rickricca]

I bit the bullit and ordered a r10 with 40 gears from George. Great guy they don’t make them like that any more