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Old 21 August 2010, 09:44   #11
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Still - if it's a good weekend I'll give the sib a bit of a run and hopefully won't end up rowing back across the Hamble like we had to the first time we used the engine!
Trevor
So how did it go?

I've found mine and it doesn't appear to be siezed and the tank doesn't look too bad - might be fun to have a foother about with it
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Old 21 August 2010, 10:43   #12
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I had the same fuel starvation issue on one of my BSA Bantams due to little bits of rust from the tank blocking the needles.
I ended up chucking in a handful of sand and gravel and just shaking it about for a while, emptying and then once clean and dry coating it with a can of some motorcycle tank sealant I bough off ebay for a few quid.
Been good as good since.
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Old 21 August 2010, 11:21   #13
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Quote:
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So how did it go?

I've found mine and it doesn't appear to be siezed and the tank doesn't look too bad - might be fun to have a foother about with it
Well - it seems to have worked just fine - their doesn't seem to be too much rust appearing in the fuel filter and the engnie runs really well. We thought we'd lost it when the SIB deflated one tube whilst on a mooring in Alderney and the engine ended up under water - but after emptying the tank and rinsing the whole engine in fresh water, after a few squirts of WD40 and a fresh petrol mix it started again and runs better than it did before!

Go for it - fire it up and have a play!
Trev
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Old 21 August 2010, 11:28   #14
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That's a great outcome. I have started a thread (for advice) on here. What mix are you using for it, 50:1 TCW-3?

EDIT:
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Incidentally, you shouldn't be using TCW3 in that engine as it's air cooled. . Normal motorbike oil will do fine.
OK - sry
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Old 21 August 2010, 11:32   #15
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Quote:
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We thought we'd lost it when the SIB deflated one tube whilst on a mooring in Alderney Trev
Now thats bad news !
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Old 21 August 2010, 17:39   #16
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Safetykleen do a rust derusting solution which is truly amazing. I don't know what's in it (as the rep wouldn't say) but it was water based. He left me a barrel to try out, simply leave whatever you want derusted in it over night, next day it's clean enough to paint. I tested it out with a length of bar that had been outside for probably 20 years, it removed every trace of rust and left a pitted (but new looking) length of black bar.

If anyones got access to a workshop where a Safetykleen rep pops in, it'd be well worth asking for a trial

free
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Old 21 August 2010, 17:51   #17
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it removed every trace of rust and left a pitted (but new looking) length of black bar.
Sulphuric acid fits that description, srsly!
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Old 22 August 2010, 16:39   #18
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Could have been, but it must have been very dilute as "harmless" was a big part of the pitch. From what I remember it was slightly yellowish, sort of looked like soap power and water, was in a thick plastic bag inside a 5 gallon, open top drum. Would have definitely taken it, one of the best things I've ever seen, but unfortunately had absolutely no use for it.

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Old 27 July 2011, 03:06   #19
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Spares wanted...

The rust has now been sorted and the motor runs really well - well it did until the starter recoil spring snapped. Does anyone have one of these old Yamaha 3.5HP Aircooled motors for spares or repair that has the recoil mechanism working still that they might be willing to sell - either just the mechanism or the whole motor?

Bits keep wearing out (like the throttle handle, and throttle cable that will soon need replacing) so it may be easier if I can get a non runner for spares rather`than keep looking for new spares each time!
Thanks
Trev
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Old 29 July 2011, 12:55   #20
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Diesel is a good de ruster
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