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Re: New Lifeboat Hull Conversion Building
Posted: Thu Dec 30, 2010 5:25 pm
by mtnman
Judging from the picture yours likely had the one cylinder diesel engine. They had an air starter. There was a hand operated air pump. You pumped up the air starter air tank, then hit the valve to the starter. It would turn over about twice. If it didn't start you did it all over again. HARD work. But if you were floating in the Pacific after your ship was sunk it was better than swimming!
Once again, Nice boat!
Re: New Lifeboat Hull Conversion Building
Posted: Fri Dec 31, 2010 8:07 pm
by bkueber
Cool, thanks for the history mtnman! I started tearing down the engine to re-bearing it and ran across a little pitting in the cylinder wall
, so I guess I will be doing a little cylinder work.
Re: New Lifeboat Hull Conversion Building
Posted: Mon Jan 03, 2011 12:38 am
by SailorHarry
mtnman wrote:Judging from the picture yours likely had the one cylinder smelly long-chain hydrocarbon engine. They had an air starter. There was a hand operated air pump. You pumped up the air starter air tank, then hit the valve to the starter. It would turn over about twice. If it didn't start you did it all over again. HARD work. But if you were floating in the Pacific after your ship was sunk it was better than swimming!
Once again, Nice boat!
Generally correct except that they are normally hydraulic instead of pneumatic. You pump up the oil reservoir to a few thousand PSI and then you'd better have some ether because it works about as well as you describe. Some newer boats have electric starters.
Re: New Lifeboat Hull Conversion Building
Posted: Mon Jan 03, 2011 12:49 am
by SailorHarry
bkueber wrote:Cool, thanks for the history mtnman! I started tearing down the engine to re-bearing it and ran across a little pitting in the cylinder wall
, so I guess I will be doing a little cylinder work.
Doesn't look too bad from here. Are you going to bore it out? I've helped repair slide valve seats with JB Weld and imagine it would work on cylinder bores as well. Treat the rust with acid, fill the pits with a light smear of JB Weld, clean up with emery cloth and lap it smooth...or hone in the case of a cylinder. Just presenting an alternative; some people might not trust JB Weld but it has it's uses.
Re: New Lifeboat Hull Conversion Building
Posted: Mon Jan 03, 2011 2:18 am
by farmerden
Can't tell from the photo how deep the pitting is but you're not building a F1 race engine.These engines are pretty forgiving so maybe a light honing will fix it Den
Re: New Lifeboat Hull Conversion Building
Posted: Tue Jan 11, 2011 5:34 pm
by bkueber
Got the hull back from the sandblaster
as far as the cylinder, put new rings in, and honed the bore, piston seems to slide smoothly, so I am going to let it be.
Re: New Lifeboat Hull Conversion Building
Posted: Tue Jan 11, 2011 6:12 pm
by mtnman
Looks great! If it were mine I'd treat the rust in the keel with some OSPHO before painting. OSPHO is an acid the penetrates the rust and changes it from iron oxide to iron phosphate. You can get it at any big paint store.
Re: New Lifeboat Hull Conversion Building
Posted: Tue Jan 11, 2011 6:28 pm
by bkueber
mtnman wrote:Looks great! If it were mine I'd treat the rust in the keel with some OSPHO before painting. OSPHO is an acid the penetrates the rust and changes it from iron oxide to iron phosphate. You can get it at any big paint store.
Kinda looks like rust, but it is actually some gunky sealer the po had put down. It has scince been scraped off.
Re: New Lifeboat Hull Conversion Building
Posted: Tue Jan 11, 2011 6:48 pm
by DetroiTug
Just out of curiosity, how much did they charge to do the sandblasting?
Looks great by the way. As you probably know, the sooner it's painted, the better. I'm going to use Interprime 820 primer, from web research, it is about the best thing available for bare steel. Self sealing, microplates, excellent adhesion.
-Ron
Re: New Lifeboat Hull Conversion Building
Posted: Wed Jan 12, 2011 1:19 am
by bkueber
DetroiTug wrote:Just out of curiosity, how much did they charge to do the sandblasting?
Looks great by the way. As you probably know, the sooner it's painted, the better. I'm going to use Interprime 820 primer, from web research, it is about the best thing available for bare steel. Self sealing, microplates, excellent adhesion.
-Ron
Ron, they only charged 175 I couldn't belive it when I went to pick it up
