Hard shaft setup

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Ken Webb

Well-Known Member
Joined
Jun 14, 2007
Messages
921
I'm thinking about using a straight hard shaft w/o using and underwater u joint. I would like to know the strut angle for shaft. I

m thinking 10 deg. This is a hydro. Forgot to say that before.
 
Last edited by a moderator:
Ken,

In the old days on a mono the strut and prop were under the boat. If I remember right the strut had a fixed angle of 7deg. Good Times
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Don
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It would be based on the hydro, I kind of recall 7-10 deg range. The back sponsons could be adjustable to help with trim but this was one of the it has to be right because changing it was HARD! Old school... maybe HARD school!
 
Depending on the shaft diameter, you can bend a hard shaft. It's called a wire drive and works very well. Glen Quarles runs one in up to 40 size boats. Smaller sizes are commercially available here.

Lohring Miller
 
What I was told by Roger Newton was that, when setting up a hard shaft, the middle of the dog should be approximately even with the bottom of the sponsons at the sponson transom as an initial setting. After that, you move it up and/or down to trim the boat's ride as needed. To facilitate this, some used silicone caulking or tape on the hull bottom to seal around the stuffing tube to make adjustments easier. When the final setting was determined, the tube was epoxied in along with, in some cases, the strut
 

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