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FYI, I have a 1GM10 in my MkII, turns a three blade 12x8 prop. Seems to be an OK match for the most part.
Paul Baker
Sooke, BC
1974 Mk II
Curious as to how easy it really was. I've taken some measurements and on paper at least it doesn't seem that the beds need to be raised at all. I've got a 2GM20F in my garage that I've been toying with swapping out for the temperamental 1GM10 in the boat.
Paul Baker
Sidney, BC
1974 Mk II
No worries, I pulled mine as I was replacing the whole fuel system and didn't need anything that big, after a clean up it was perfect. I guess at some point later in production they cheaped out and used steel/alu, but the monel originals should last a lifetime.
Paul Baker
Sidney, BC
1974 Mk II
The tank pictured is monel, not steel or aluminium. Very expensive, very corrosion resistant.
Paul Baker
Sidney, BC
1974 Mk II
Poliglow is fine as long as it's maintained according to the instructions. It's a pain when left to degrade, or when you don't know a PO applied it. Use their solvent cleaner (polistrip or something?) to remove it. Wet sanding is not something you want to do often or you'll go right through the gel.
Paul Baker
Sidney, BC
1974 Mk II
And that's also why they recommend not using the perforated style hose clamps on anything below the waterline.
Paul Baker
Sidney, BC
1974 Mk II
Didn't say where, but here is one http://www.thunderbirdmarine.com/boat-info.php?ID=4197
Paul Baker
Sidney, BC
1974 Mk II
No worries.
Paul Baker
Sidney, BC
1974 Mk II
Completely unrelated, but if you don't use your gennaker, are you interested in selling it?
Paul Baker
Sidney, BC
1974 Mk II
Well, after two hours or so hanging up the mast with the snow howling around, the original hose is back in place. I got the new stuff to fit into the mast fitting, but then couldn't get the spreader into it. Or I could get the new hose onto the spreader, and then couldn't get it into the mast fitting. It's just too tight to be able to do it aloft. If I pull the mast, or if I can get to the end of the spreader from a shore crane, then it will be a perfect snug fit with a bit of gentle persuasion from a rubber mallet. It's not as bad as I thought up there, the rubber isn't completely shot so it'll be OK for a while. So for the time being, it's two mast climbs, countless bruises, muscles aching and zero actual result.
On the positive side, the mast is now nice and straight, and I have the stays tensioned as I wanted them.
Paul Baker
Sidney, BC
1974 Mk II
I was up the mast yesterday and the spreader on mine is 1.25" outside diameter and the mast fitting is 1.75". The spreader is held on with a split pin. The hose that had been used previously appears to be 3/16" wall thickness so not a snug fit in the mast fitting, hence the wobble even though the rubber itself was in OK condition.
I found some steel reinforced hose at a truck parts place with a 1.25" I/D and 1/4" wall thickness (very slightly over actually, maybe 0.015" bigger). Going back up the mast in a little while to see if I can get it all back together. I think I will likely use a rubber mallet to gently tap the hose into the mast fitting, then drill through the hose for the split pins. I'll then try to ease the spreader back in, hopefully lining up the holes and putting a new split pin in place, and then I'll cover the fitting in rigging tape to seal it up and protect the rubber hose. If it all works, should be good for another 20 years.
Paul Baker
Sidney, BC
1974 Mk II
I find my MkII very difficult to get to heave to nicely, seems that in any sort of wind, the bow gets blown off and you end up with the wind coming over the rear quarter with the boat heeling over a fair amount. Kind of "reverse hove-to" if you like.
Other than rolling in the foresail to a tiny hanky sized triangle, any other tips on this model? I suspect that's the answer as the rudder is pretty small.
Paul Baker
Sidney, BC
1974 Mk II
Thanks David, resounding probablies are about the best to hope for with old boats! I'll see if I can find some hose to the above spec in local marine or auto parts places.
Cheers,
Paul
Paul Baker
Sidney, BC
1974 Mk II
Does anyone happen to know if the MkII is the same size spreaders? I have a wobbler on the port side that I need to sort out and I'd like to try and do it in one trip up the mast if possible.
Paul Baker
Sidney, BC
1974 Mk II
She's got a Yanmar 1GM10, gave her a service on Saturday and she ran flawlessly all day Sunday. Same can't be said for the transmission as I now have a knocking noise in fwd, and no reverse gear. Oh well, gives the mechanic something to do tomorrow.
Paul Baker
Sidney, BC
1974 Mk II
Closed today on a 1974 MkII, I'm sure I'll have lots of questions but just wanted to say hi!
Paul Baker
Sidney, BC
1973 Mk II
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