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November 19, 2017, 08:34:56 PM


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Author Topic: Transom Height?  (Read 710 times)
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Jwmsnook
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« on: January 24, 2017, 11:49:04 AM »

I just picked up a 16ft Imensa to use as a skiff for the 10,000 islands.  I have a 20" shaft 25hp I wanted to use but of course it blows out when I try to put the boots to it since the transom is 22".  A couple questions?

1) Why do they make the transoms 22" since standard outboard sizes are 15", 20" and 25" shafts?
2) What does everyone else do, use a jack plate to get the offset to reduce the chance of cavitation (assuming that works) or cut about 2" out of the transom?

I've done a lot of fiberglass work so cutting down the transom isn't too much of a concern, just would like to know what everyone else is doing.

Thanks in advance and hope to see you on the water.

~Josh
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gsaade
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« Reply #1 on: January 24, 2017, 08:58:35 PM »

Try a 4 blade prop!

That will help getting better traction. I would try this before curting fiberglass.

Do you have a pic of the current setup?
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Jwmsnook
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« Reply #2 on: January 25, 2017, 07:09:11 AM »

I'll take a picture tonight.  Right now the cavitation plate is 3.25" above the pad of the boat.  Considering it only has a 2.25" offset (built in) that shouldn't be enough but every hull is different.
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