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Old 12 November 2013, 11:55   #11
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Thanks for this. Yes sorry I should have posted a picture earlier.

I shall attack the swingarm pivots at the weekend. I can't see any replaceable parts available on the internet for these pivots- no nylon bushes or washers to replace are there? (new split pin of course)

The photo of the bungee is good - I will do something similar too. Thankyou.

I am looking forward to recovering the boat with a working swing arm and without the irritating misaligned dumbells!

Thanks all.
the swinging arm should just swing, may be seized but also worth checking that both clamps are in same position on the frame, if they aren't square to each other that could cause beam to bind on the pivots
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Old 12 November 2013, 12:17   #12
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the swinging arm should just swing, may be seized but also worth checking that both clamps are in same position on the frame, if they aren't square to each other that could cause beam to bind on the pivots
Good point I will check. Thanks Chris
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Old 24 November 2013, 16:00   #13
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Swinging beams freed up with a bit of persuasion. The whole beam is quite stable and resists flipping over.

Barbells all stripped down and new washers and split pins all round ( original barbell just had a crimped section of the aluminium holding the inner washer in place - replaced with drilled hole and split pin)

New part-threaded stainless bolts to hold barbells to clevis bracket- nice and loose but not too much play.

Most importantly, bungee straps to hold the barbells in the correct position- this is a godsend!

Thanks all for your ideas. The wife launched the rib for the first time today and had no difficulties pushing the boat off, and I recovered the boat by driving straight on to the trailer for the first time ever- much less faff!
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Old 24 November 2013, 16:07   #14
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Quote:
Originally Posted by steve-ribnet View Post
Swinging beams freed up with a bit of persuasion. The whole beam is quite stable and resists flipping over.

Barbells all stripped down and new washers and split pins all round ( original barbell just had a crimped section of the aluminium holding the inner washer in place - replaced with drilled hole and split pin)

New part-threaded stainless bolts to hold barbells to clevis bracket- nice and loose but not too much play.

Most importantly, bungee straps to hold the barbells in the correct position- this is a godsend!

Thanks all for your ideas. The wife launched the rib for the first time today and had no difficulties pushing the boat off, and I recovered the boat by driving straight on to the trailer for the first time ever- much less faff!
excellent news, the power of RIBnet strikes eh, glad you're sorted
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Old 24 November 2013, 19:49   #15
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excellent news, the power of RIBnet strikes eh, glad you're sorted
+1
Great job done with the bungees, and good to hear you managed to power your way on too. many can't perform this delicate operation, proclaiming winching on is the only way, you are obviously a natural, well done sir.

Regards
Paul.
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Old 25 November 2013, 02:13   #16
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New part-threaded stainless bolts to hold barbells to clevis bracket- nice and loose but not too much play.
I'm not sure stainless and zinc like each other? Doesn't the zinc leach metal from the stainless?
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Old 25 November 2013, 03:49   #17
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I'm not sure stainless and zinc like each other? Doesn't the zinc leach metal from the stainless?
In theory there would be bimetallic corrosion between the stainless and the zinc, but because there is so little surface area of the stainless vs the much much larger surface area of zinc, and it is the zinc that would be 'attacked' / made to corrode by the stainless, I'm not too worried.

In practice...I've not had problems in the past with stainless split pins on galvanized box trailers, - the hardness of the stainless makes them easier to extract if seized too!

Here's a good article

http://www.galvanizeit.org/hot-dip-g...-other-metals/

And here
http://www.galvanizeit.org/hot-dip-g...lvanized-steel
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Old 25 November 2013, 03:54   #18
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Oop 2nd link broken

http://www.galvanizeit.org/education...lvanized-steel
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Old 25 November 2013, 04:02   #19
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I'm not sure stainless and zinc like each other? Doesn't the zinc leach metal from the stainless?
...and I put copper grease on the stainless parts passing through the aluminium dumbells for the same reason
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Old 25 November 2013, 04:20   #20
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I guess main thing is to rinse salt water off after recovery
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