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| madjackghengis:
Hi, when I built my last flame sucker, I had started with the intent of building a slightly larger version of "Poppin", but John's water cooled version was going together, and I had to try to use his version of the graphite valve setup, and so I ended up completely away from the idea, and with a cast iron cylinder and head, decided I had to try another version. Again, I intended to up-scale a "Poppin", but it turned out a little bit different. I started out with the idea of turning an iron liner and shrink fitting it in an aluminum finned jacket, to see how this would affect the running, with better cooling. I took a piece of one inch cast iron bar, turned the outside to an inch, reamed the inside to 13/16ths, with about a sixteenth of shoulder .100 in long on the head end to ensure the head locked the cylinder in place. I have no pictures of the turning of the liner or jacket, my camera was dead at the time, so the pictures start with the cylinder pressed in the jacket and already reamed, getting ready to fit the base to a mount. With the cylinder in a V block, centering the quill over it to use pcd for the base holes. The V block crosses the vise bed and holds the cylinder vertical with accuracy. center drilling the base holes drilling through tap size for #8-32 bolts tapping out the four base holes milling the base square cleaned up and ready for head bolt holes centering the cylinder again, eight #6 head bolts turning the flywheels, using a piece of 2.5 hot rolled, turned to a smooth finish, two blanks cut about .400 thick, drilled and reamed in place, so the bores align with the o.d.'s They both got put in a V block and drilled and reamed for the crank pin, .750 from the mainshaft holes for an inch and a half stroke. rather than mill out a chunk of billet, I decided to build up a frame, and have a cylinder plate across the end of it, with the plate held to the two sides with two screws, #6-32, holding each end to each side plate. two pieces of quarter inch aluminum were cut out of an inch and a half bar, and are being milled square and parallel together drilling and tapping the mount holes for the side plates. side plates ready for pre-assembly and fitting of the cylinder machining the gudeon end of the rod thin and then the other side of it. cleaning up the end before drilling drilling the gudeon pin hole the connecting rod, halfway done. The head was already roughed out from a piece of stainless, now it is being centered for head bolt holes using a center drill, step drilling up to size, and then counter boring with an end mill, so head bolts are below the surface when it is completed. by the way, a picture of the completed cylinder with a fitted lapped piston in the background, the plate for the sides, and the blank head next to it. That will have to do for today, got to clean up after the flooding and get the shop back working. Ta ta for now, mad jack |
| saw:
Intresting project :thumbup: |
| Stilldrillin:
That's another 'licker off to a flying start, Jack! :clap: :clap: Will be quietly watching progress.... :D It's great to see you back amongst us again! :thumbup: David D |
| sbwhart:
I've got my eye on this one Jack. :wave: Stew |
| doubleboost:
That is some nice machining :thumbup: Off to a flying start Keep the pictures coming it is good to see how other people set things up John |
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