Gallery, Projects and General > Project Logs
a nine cylinder radial engine, plans by "ageless engines"
madjackghengis:
Well, I can see that I will have to hang my head in shame, I did buy the gear, along with most of the others, because it was cheaper than buying the cutters for two different gear sizes. I will say that when I got the bill for the gears, I decided I'd never buy an internal one again, it was over seventy dollars by its self. This engine build is a prelude to building a much larger radial engine for the use on a motorcycle, which I expect to be about a hundred cubic inches, and I want to work out all the difficulties on a small scale, before investing in the bigger scale. I will be doing all the gear cutting for that, as once I saw the gear and it's abbreviated teeth, I realized it would have been an easy cut on a shaper and would set up and do it myself. Ah well, it's only money!
I have I think seven more gears to install, two for the oil pressure feed pump, and two for the scavenge pump, and one for the rear main shaft to drive the oil gears. At the end of the rear main shaft, there will be a pair of bevel gears to drive the distributor, and they will be a two to one ratio as well. As I told Nick, the pinion I cut on the front mainstaft is the first gear I've ever cut with the proper tooling, from start to finish, and it surprised me coming out perfect the first time with proper back lash and everything.
I hope to get a good go on the crank shaft assembly, and the rear main bearing, so I can establish end play, as that is critical in the way this goes together. More pictures coming soon. Mad Jack :headbang:
Bernd:
Well sometimes you just need to buy some of the parts. That's OK we won't hold it against you Mad jack. :headbang:
A larger radial engine scrtach built for a motorcycle? :bugeye: That ought to be some build. :bow:
More power to ya! for that project. :ddb:
Bernd
madjackghengis:
I appreciate the understanding shown, regarding buying gears, but I'll say this, if I had known the actual form the internal gear would have, is has quite abreviated addendums, to clear the pinion, I would have set up on the shaper and cut it. I also want to say, I'm not doing the cranks according to the plans I purchased at great expense, because I don't like the set up, but looking at all the different crank set ups I've seen for the fifteen or twenty different engines I've looked at on this forum has helped me make up my mind as to how I will set it up. Just watching the means some of you use to get around problems is motivating, and instructional, and makes me glad I was turned on to this project forum. I've seen some truly impressive work here, and I've seen some that was done in a matter of just a few days. I have to say I never imagined such a thing when I was a kid, and had decided to be a mechanic, it was great then just to find a like minded individual, or an older more experienced "man of metal", who had the patience to share some of the experience and skills accumulated. I wonder, do tax auditors have similar forums where they can "build" model cases of tax fraud, or tax honesty, and enjoy doing for pleasure, what they do for a living? I don't think there is anything in the world better than being a mechanic. It means one is a "creator" in his own right, and that is a special feeling. Mad Jack :nrocks: :beer:
Bernd:
Right on Mad Jack. :ddb: :nrocks: :ddb: :nrocks: :ddb: :nrocks: :headbang:
Oh ya, can't forget the motivation loation :beer: :beer: :beer: :beer:
and for you that don't drink :coffee:
madjackghengis:
Well, I started on the crankshaft "cheeks" yesterday, decided to use some half inch steel from a disc harrow, already hardened to at least RC 45 or so, got it cut, cleaned both sides and faces, tacked the two pieces together and bored the crank holes, drilled and reamed the alignment holes in the counter weights, and drilled and reamed the crank pin holes, and somehow ended up with nasty crank pin holes six thousandths bigger and uglier than the reamer. I think I will try to get the still tacked "block" aligned in my vise again, and bore the crank pin holes till they are smooth and clean, and turn the press fit ends a bit larger than three eighths, and if that doesn't work, cut off a couple more pieces of this rusty, nasty hard steel, and do it again, but use my shaper to get everything square and parallel, and see if that works better. There will be pictures of crank cheeks and maybe a crank tomorrow, if I have to stay up all night. I think one flute of the drill I used before running the reamer in the crank pin hole is chipped, and made it drill oversized. I gave up on the pictures last night when I miked the crank pin hole because I didn't want the rust stain from the tear, to ruin the otherwise good looking crank cheeks block. At least I've got plenty of spare bar stock, a bit old and cranky, but the price was right. mad jack :coffee: :smart: :bang:
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