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+--- Thread: P&W 1830 Radial in 1/6 scale. (/thread-573.html)
RE: P&W 1830 Radial in 1/6 scale. - Bill Gruby - 02-20-2013
Took a crash (pun intended) on windows 8. This is complicated. OK let's try the picture thing. This is the set-up for cutting the oil pump drive gear as an integral part of the front crankshaft.
"Billy G"
RE: P&W 1830 Radial in 1/6 scale. - Bill Gruby - 02-20-2013
It works.
Almost done. Gear is finished"Billy G"
RE: P&W 1830 Radial in 1/6 scale. - EdK - 02-20-2013
(02-20-2013, 06:45 PM)Bill Gruby Wrote: It works.
"Billy G"
Nice Bill!
I like your quality control group all ready and waiting. It's good to have dependable helpers.
Ed
RE: P&W 1830 Radial in 1/6 scale. - Bill Gruby - 02-20-2013
Those two know when the camera comes out.
It was a rough haul Ed. That is 316 SS. It took the cutter out twice."Billy G"
RE: P&W 1830 Radial in 1/6 scale. - sasquatch - 02-20-2013
Real nice Bill!
RE: P&W 1830 Radial in 1/6 scale. - Bill Gruby - 02-20-2013
Thank you. These are the five parts that make up the crank. I have to fabricate the crank cheeks now.
"Billy G"
RE: P&W 1830 Radial in 1/6 scale. - ETC57 - 02-20-2013
Great work Bill.
Jerry
RE: P&W 1830 Radial in 1/6 scale. - Bill Gruby - 02-21-2013
Prints called for the bearing sleeved to be pressed on and held with Loctite. That didn't sit right with me. This engine will turn 9500RPM at the high end. I went old school again. I cut the sleeves .004 undersize on the bore. I cut the shafts to print. Into the oven at 400 degrees went the sleeves. and into the freezer went the shafts. Two hours later they went together with a light tap. Once they cooled they are one. If you are looking to see where the sleeves are, look between the square end and the gears.
"Billy G"
RE: P&W 1830 Radial in 1/6 scale. - Bill Gruby - 02-21-2013
If there is one thing I have learned over the years I have been building and repairing small engines is that you have to be prepared to stop an make a special holding fixture at any time.
The center main bearing shaft needs to be square on both ends. It is only 1.5 inches long. I made this holder to hold if fast in the vise. Just cut and turn till both sides are .375X.375.
"Billy G"
RE: P&W 1830 Radial in 1/6 scale. - DaveH - 02-21-2013
Billy,
Very nice job on the little gears
Looking good
DaveH