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Old 08 February 2016, 08:22   #1
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long shaft on a 15" transom?

First post. I have 20" but my boat calls for a 15". I have a 11 ' PVC Zodiac Active V. Anyone ever modify their transom for this?
I am going to run it with the 20" to see how it handles and go from there.
I was thinking on fabricating a bracket out of stainless and starboard and bolt to the transom but would be stoked to see if anyone has done this before?

I don't need to go fast just get on plane and be safe. I am kinda stuck with the 20" cause I use it as a kicker on my 24.
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Old 08 February 2016, 08:24   #2
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It places undue stress on the transom due to the enhanced "levering" motion.

But, if you really want to take that approach, this is your best bet:
Mini-Jackerô Jack Plate | T-H Marine Supplies
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Old 08 February 2016, 09:31   #3
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That was fast, thanks Richard! That looks simple enough to me, done.
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Old 08 February 2016, 09:51   #4
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Quote:
Originally Posted by office888 View Post
It places undue stress on the transom due to the enhanced "levering" motion.

But, if you really want to take that approach, this is your best bet:
Mini-Jacker™ Jack Plate | T-H Marine Supplies
it states 3 inch vertical offset do you think it could be pushed to 5 inch looks quite a substantial plate ?
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Old 08 February 2016, 11:34   #5
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it states 3 inch vertical offset do you think it could be pushed to 5 inch looks quite a substantial plate ?
That puts you 2" low, which is a lot better than 5".

The plate says it rated for a 35HP; I doubt you're anywhere near that with an 11' boat. I'd say it would be fine. In truth, assuming we're talking less than half the rating, I'd say mount the plate a couple of inches high and you're in the sweet(ish) spot.

jky
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Old 08 February 2016, 13:19   #6
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All thanks, already ordered it. Looks like with extra holes on the transom flanges will allow me to set it up to my desired height. I will post pics after I get it all set up. It's a 20hp.
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Old 09 February 2016, 00:18   #7
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Originally Posted by office888 View Post
It places undue stress on the transom due to the enhanced "levering" motion.

But, if you really want to take that approach, this is your best bet:
Mini-Jackerô Jack Plate | T-H Marine Supplies
Had to look up "levering" and the example was - "the old man was levering his way up out of the chair" Makes sense now, gotta good laugh out of that one. I have been told the long shaft will create some stress on the transom glue and welds. Thanks for the tip on the Mini-Jacker and I will keep an eye on levering.
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Old 09 February 2016, 03:15   #8
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not familar with your boat but you could go with two struts from the transom to the deck as extra support to counteract the leverage, an engineer could work out the extra stress for position of the struts, if it were me i would put two in with barrel screws so they can be adjusted exactly anyway.

cheers
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Old 09 February 2016, 08:19   #9
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Had to look up "levering" and the example was - "the old man was levering his way up out of the chair" Makes sense now, gotta good laugh out of that one. I have been told the long shaft will create some stress on the transom glue and welds. Thanks for the tip on the Mini-Jacker and I will keep an eye on levering.
The Acti-V has a welded transom.

It will probably not be a concern, so long as the wood is kept from rotting. Zodiac used an aviation grade marine plywood for the transom, so it is very high quality and very strong, but if the coating is allowed to peel off, then the wood is unprotected.
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Old 13 February 2016, 05:25   #10
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>>>The Acti-V has a welded transom.

I ask because I'm interested... not to say you're wrong... how do they weld PVC to wood?
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