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Old 07 May 2012, 17:29   #1
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1978 Avon Searider 5.4 Restoration.

Il start from the beginning.... myself and a pal have a mutual interest in boats, engines and shiny things which has led to us doing up a couple of boats and outboards in order to stay away from wifes and the livingroom sofa.

We were recently offered an ageing Avon 5.4 and Mercury 80 that were both in need of a little TLC. Off to Bradford we go. After a quick change of trailer bearings and an evening at Wetherspoons we were heading back to Fort William the next morning with a project!

Here it is...







As you can see the transom is rotten!

The boat was a non starter unless we were satisfied we could get the old Mercury 80hp going, after a few parts, many tins of WD40 and some divine intervention it was a runner, here is the thread for the old Merc...

1978 Mercury 80

So it was on to the boat. After some angle grinder work getting the transom front panel off, the rotten ply out and everything cleaned up...



TBC
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Old 07 May 2012, 17:48   #2
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New transom has been made out of 2 sheets of 18mm marine ply. The remaining transom you see above has had a layer of CSM and polyester resin added to it to take up any uneveness and give the first sheet of ply something to bond to, the first sheet of ply was clamped in place and left to go off, the next day the face of it was resined to accept the second sheet, this sandwich was then clamped up...



Once the resin had set up overnight the final finish layer was added to the bare ply, its turned out fantastic....



Excess trimmed off and ready for sanding...





Its as solid as a rock, the original was two sheets of ply, one 18mm and one 12mm, our way has beefed it up a little and there is still a little more to do to strengthen it.
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Old 07 May 2012, 18:07   #3
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Anyone know where I can buy some of the original Avon stickers?...

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Old 07 May 2012, 18:15   #4
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Impressive job with that transom replacement mate. Be sure those edges are well sealed for another 30years of life!
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Old 07 May 2012, 18:31   #5
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Nice job there... are you going to put the Stainless supports back in?
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Old 07 May 2012, 18:35   #6
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Originally Posted by ribraff View Post
Nice job there... are you going to put the Stainless supports back in?
Yep, new polished stainless ones are made, we have stopped at this stage as I am going to get the polisher and compound on the transom to try and bring back the original colour so the less bolts sticking through it the better.
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Old 07 May 2012, 18:39   #7
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The original plate on the transom says itl take 120hp...eeek!

Thats quite an engine for a relatively skinny transom.
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Old 07 May 2012, 18:54   #8
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The original plate on the transom says itl take 120hp...eeek!

Thats quite an engine for a relatively skinny transom.
A 1978 120hp is roughly a 90-100hp today (wild guess). They measured at the powerhead back then, not the propshaft like they do today.
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Old 08 May 2012, 02:50   #9
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A 1978 120hp is roughly a 90-100hp today (wild guess). They measured at the powerhead back then, not the propshaft like they do today.
Ahh I see, if that is the case then will the Merc 80 of the same year be the same ie measured at the powerhead?
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Old 08 May 2012, 03:31   #10
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What a lovely project!! nice one, keept he pictures coming
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