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Old 02 November 2008, 09:35   #1
JSP
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Force on the transom

I've been thinking of getting an A frame made (at a lower cost of buying one, looks like they have a big mark up) but having one made that would replace the transom support bars.
The only thing concerning me is if I ever sell the boat and the next owner uses the A frame to pull things. Would the A frame then act as leverage to pull the bolts out of the hull and transom (The most force would be on the deck fitting if the frame was being pulled back).
Also anyone any idea what kind of force the transom pulls on those bars on a 4m searider/50hp?
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Old 02 November 2008, 13:11   #2
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I've been thinking of getting an A frame made (at a lower cost of buying one, looks like they have a big mark up)
You can get a new one on ebay for around 200. I doubt that you'll get one made for less than that.


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The only thing concerning me is if I ever sell the boat and the next owner uses the A frame to pull things. Would the A frame then act as leverage to pull the bolts out of the hull and transom (The most force would be on the deck fitting if the frame was being pulled back)...
Caveat emptor (let the buyer beware)
Do Avon stipulate on their own A frames that they are not to be used for towing?

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Also anyone any idea what kind of force the transom pulls on those bars on a 4m searider/50hp?
The force would be pushing against the support bars when the boat is in forward gear.


PS
When I read the title to this thread, I thought you were considering fitting a Force outboard
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Old 02 November 2008, 13:28   #3
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Hi DH mate,
I've seen the ones on ebay and even at those prices I can still save a bit getting a local TM to do it. I've seen his work on Bikes, 4X4's and farming rigs so I know there wont be any pigeon poo weld
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Old 02 November 2008, 17:23   #4
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Hi DH mate,
I've seen the ones on ebay and even at those prices I can still save a bit getting a local TM to do it. I've seen his work on Bikes, 4X4's and farming rigs so I know there wont be any pigeon poo weld
Good
Will it be stainless, or painted/powder coated/galvanised mild steel?
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Old 02 November 2008, 17:39   #5
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Got a price for stainless which looks good but I don't know if powered coated would be more practical?
Unless a S/H one comes up very soon I'm gonna take her in for the exact measurements.
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Old 02 November 2008, 17:45   #6
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If he'll do you a made to measure stainless double frame for sub 200, you've done well
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Old 02 November 2008, 17:51   #7
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Yeah was a well timed thing as it's being marked onto another bigger job
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Old 02 November 2008, 17:53   #8
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Yeah was a well timed thing as it's being marked onto another bigger job
Sweet
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Old 02 November 2008, 17:58   #9
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A-frame prices discussed here:

http://rib.net/forum/showthread.php?t=19942
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