There still seem to be questions about the availability of Coles Corliss drawings and castings. As I posted earlier, for those interested, the 1978-79 R. Bromps drawings and some castings are available from Jeffrey Lehn, Ph. 724 931 0580.
IN Cebu City (Philippines) I can get any type of belts done for a few bucks. Custom made. It is quite simple really, I'm sure if someone wanted to, they could make simple belts of some type of rope/fibre and some type of curable rubber with a form of some type and do what is necessary. I have been thimking about how I am going to do the belts for the Corliss/Ray. Maybe I will put some effort into making some of these belts.What a beautiful Engine, I was wonder do you really do all that work or the one on your shoulder does it and you taking the credit, I think I know the answer, you going to have some serious hours of machining in that engine, looking forward to see it running, the one we had was rope driven to the pump, that was a neat way they did it to switch it back to the other side of the drive pulley, when I was running it one night it started pounding I went around the side of the engine where the valves were and it was a worn catch block that would lift the cam about half way and drop it, so I took my hand and held the came to the catch block was and it got silent, well that was good but a young kid and had never change on with the engine running I helped it drop for about two hours before the older man come to relieve me, he was calm said stay here I will get the block, I was well aware of how to keep it opening while he changed it, the next time It pounded but I change it quick as i could, I have wanted to build one but the hours, this winter I am going to make the pulleys to show how the rope was crossed over, some people have asked me over the years where you get a V-Belt that long I tell them it was a rope and get a blank stare, I say to them when you figure that out let me know, no answer yet, again thanks for sharing your wisdom, Joe
You are right I didn't understand. I have seen where there are rope pulleys where there are several ropes on the pulleys acting as a single belt (several ropes= one belt , sorta). What I'm thimking is very much the same thing in miniature but not rope shaped grooves, rather one set of fibres set with some tiype of goo like rubber that can be baked or cured some way.I don't think you understand what I was talking about, let me try again, it was one continuous rope, try to understand it was not V-Belt groves, it was round groves in the flywheel and the pump pulley (like you would make with a round over tool) flywheel 30' in diameter and the pump pulley 8' and 60' from center of each shaft, think they make a V-Belt that size and for a few bucks.
Can I ask why this is so stressful? I did this about 40 years ago and I can't remember being stressed by it. You have goo tools and looks to me like a very goo job. I thimk basically all you really have to worry about is making sure the cutter is exactly center lined up with the meeting of the plate and body. You could be a few thou left or right but not the meeting line.There are three different cast iron plates to adapt to the cylinder block.
See the difference between "before" and "after"
Machining the 4 valves holes is really a stressful job
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Yes, u r correct. I didn't bother with doing those fine threads I did it a different way, with little screws. But NOW I have ahand wheel which makes that kind of operation much easierThe fine tread are also something complicate to do. There is a lot of.
But the biggest difficulty is to stop just before the end of part.
The cutting tool come very close.
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There is also the genuiness of parts to consider. As for myself, I just buy suitable commercial rings. But I applaud the efforts of those who wish to make their own.LeZap: Lovely work - keep up the good work and excellent reports. Especially the work making stepped piston rings. I just wonder if in truth they are worth the effort of making? - Or is that the stupid question is because this is like climbing mountains. Don't ask "why" - the pleasure is both in "the Doing" and "Achieving the result".
Raised on Commercial industry - I look for the best engineering solution - which considers everything - including cost, materials, serviceability, "manufacturing efficiency", and a host of other things - including stress of the people making it! They do appear to have a large overlap. Not something I have designed, so what are the criteria for the design of the overlap? - I have only designed rings for cylinder wall pressure, size and with straight gaps. (Decades ago!).