Gallery, Projects and General > Project Logs
a nine cylinder radial engine, plans by "ageless engines"
Bernd:
Lookin' real nice on that radial Mad jack.
I'm in for the V-twin and bike build. Never know what you might be able to pick up from somebody elses build.
Bernd
Darren:
I'm with bernd ... nice going there btw :thumbup:
Powder Keg:
Looking great!!! I'd like to see the V twin and bike :nrocks:
madjackghengis:
Well guys,
As my mother always told me, the road to hell is paved with good intents, so I ran the threading tool into the top fin, ruining the second blank, and went ahead and cut off two more blanks. I took the first one ruined, put it back in the chuck, and bored it, just to check the bore, and found I was boring two thousandths taper in two inches, not good. Next step, tear down the head stock of the lathe and figure out why.
The problem couldn't be all the swarf accumulated over the past twenty years between the head stock and the bed, could it? Cleaned out everything, took the opportunity to level the lathe, as it hadn't been done since installation ten years ago, found it was way out, both laterally, and logitudinally, not to mention twisted.
I bored out the scrapped cylinder and found slightly less than a thousandths taper and I can work wth that. I now have one half completed cylinder, and a second one in the lathe, waiting my ministrations today. I took the expanding mandrel of my plywood blade two hundred tooth lathe dividing setup, put a stock five inch hand wheel with crank, and cut the threads by hand power, stopping before running into the top fin of the cylinder. The method is established, just got to do the work now. The .032 slot forming the fins, .125 deep wants to bite in any time it can, and even with the tail stock and center as close as possible, will pull the cylinder out of true with no warning, hand fed or under power.
CrewCab:
Well MadJack ............ this is a thoroughly entertaining thread, I'm hooked as I'm sure are loads of others. ......... and your photo skills have come along nicely too :smart:
I must admit after seeing the first photo my initial thought was ............ dam, you don't wanna break a tap in the last hole ........ :bugeye: .............. now I see you can take that minor hiccup easily in your stride I can breathe a little easier :coffee:
Looking forward to the updates, thanks for taking the time to document it all ............ and ........... great work :thumbup:
CC
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