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| Repairing a high quality model marine engine |
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| sbwhart:
Nice one John :thumbup: Stew |
| bogstandard:
Following on from the last time, where I was making gaskets. They do take a fair amount of time to hand cut well fitting gaskets, so I have managed all that need to be done at this time. I do have some more to do on the steam valve, but they can be done when needed. So here is the kit, a scalpel, a couple of hole punches and a hole jig for each type. The jig for the square one was made from the now redundant steam chest covers, and the circular one was made from a piece of 10mm PVC. I always cut extras, just in case I tear one on assembly, plus any that are left over are sent to the customer in a little spares pack when the engine is returned. Two thicknesses of PTFE are used, one at 0.005" and the thicker at 0.010". Where the gasket cement was used will get the thinner material, while the main gasket on the steam chest will get the thick ones. I have used PTFE for a few years now, and found it much superior to the old paper gasket. I have even made head gaskets for IC engines with no problems at all. All the little offcuts are saved, to be used for smaller gaskets, as it is rather expensive to just be thrown away. This is where the cylinder cap ones will go. They look awful in this shot, but in fact they are quite round, on here they are all wavy and makes them look all out of shape. The steam chest gaskets will fit like this. If I feel up to it later, I will get all the studs made, and get the top end reassembled. Then it is just the steam connection pipe and control valve to do. Bogs |
| sbwhart:
Hi John Where do you get that PTFE sheet from ?. Stew |
| bogstandard:
Stew, I couldn't find a supplier in the UK when I wanted some. I don't know if anyone is doing it now. I bought mine from the greatest shop in the world for bits 'n bobs http://www.smallparts.com/ The only problem was the delivery charge, I ordered about $45 worth of bits but the small package they sent me came to over $60 in carriage charges. So I have never used them since. Just search for PTFE sheet. John |
| Brass_Machine:
--- Quote from: bogstandard on April 20, 2009, 09:38:58 AM ---Stew, I couldn't find a supplier in the UK when I wanted some. I don't know if anyone is doing it now. I bought mine from the greatest shop in the world for bits 'n bobs http://www.smallparts.com/ The only problem was the delivery charge, I ordered about $45 worth of bits but the small package they sent me came to over $60 in carriage charges. So I have never used them since. Just search for PTFE sheet. John --- End quote --- There are some of us here in the states that could help 'assist' getting things shipped to the UK (or else where) for much cheaper. I have done that for a few people... CrewCab most recently. He ordered a bunch of stuff from Mcmaster and LMS , had it shipped to me and I sent it to him. Saving the huge shipping fee from LMS and he was able to get stuff from Mcmaster (who no longer ships out of the US for 'small' guys) Eric |
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