Shim the prop-shaft flange by 1/8"

[alexco38]

Hi folks,
I need an extra 1/8" between the propeller hub and the cutlass bearing face in order to put in a rope cutter disk. I need a gap of 1/4" for water to cool the cutlass bearing.

Without replacing the shaft, I wish to put a shim disk between the shaft flange and the tranny. I'll have a machine shop to make me a flat shim ring for this. I can still align the shaft since the shim is machined flat.

Has anyone done this before? Need your opinions.

 

[LeslieTroyer]

I believe that Spur sells a 3/4" spacer exactly like you are talking about for this purpose.

Les

 

[kloudie1]

The shop needs to put a "pilot fit" onto the shim to hold the coupling on center.. a simple flat shim will have the shaft and trans output slightly off center.. The shim would have to have a raised ring on one side and a recessed ring on the other side of the shim to accept the ring of the coupling fit.. if ya have a good drawing of the coupling, a good machinist would not have a problem making one ..

 

[LeslieTroyer]

here is the link to the item I discussed above http://www.spursmarine.com/spurs-shaft-spacer/ it is 1" not 3/4 but can be custom ordered for thickness