Transom flex from motor bracket

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drumbeater

drumbeater

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Jan 18, 2011
225
Hunter 26 Beaufort SC
My transom seems to flex from the weight and thrust from the outboard motor. Does anyone else experience this? The only thing inside the hull on the mounting bolts are fender washers. I could see this causing the gelcoat to flex over time, but the boat is an 82' and hasn't had a problem yet. I'm used to super strong transoms on powerboats.

We're using a 9.9 Evinrude Sailmaster longshaft.

John
 
Fly_H23

Fly_H23

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Mar 2, 2011
489
Compac 14 Charleston, SC
Might consider adding a large backing plate, something like 3/4 plywood.
 
inarathree

inarathree

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Jun 16, 2010
495
In search of my next boat Palm Harbor, FL
My H22 mounts are backed by 3"x3" 1/4" ss plates. Since someone else confirmed they have the same, I assume this is original. I don't see any flex on my transom. A 9.9hp motor is a bit large for a 22'. I have a 6hp Tohatsu SailPro, which I would consider the largest I would put on a 22'.
 
JamesO256

JamesO256

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Apr 30, 2011
66
Hunter 22 Lk. Normon, NC
I have a 4hp and it flexes but I'm having issues with mine. I think I'll go with the ply wood backing.
 
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