Gallery, Projects and General > Project Logs
Rocker Engine
foozer:
Flywheel time.
Plan calls for a 1.250 inch dia piece. Hmm dont have a piece that fits the requirement. Do have a piece of bronze bearing that has an OD tad greater, do have some AL that an OD a tad smaller. A two piece adventure.
Made the rim, OD 1.250 inch ID 1.050 inch
Made the web OD 1.055 inch (heat rim, chill web press together?)
Drilled holes in web, took the vise of my handy dandy and mounted a little RT. And yes it is hard to see things at that angle. Changed number and size of web holes to account for smaller dia web. Started at 0 and went +72 from there to get the 5 holes.
Brides cooking a chicken sitting on a beer in the oven, seems like a good time to pop the bronze rim in
Problem coming up with this attack method. Flywheel is going to wobble. Have left some extra on the flywheel to skim it straight but . . Solution best i can ponder is to make a new axle shaft slightly oversize on the bearing end. press it into the flywheel, soft jaws will handle the true up of the assembly.
Robert
sbwhart:
--- Quote from: foozer on July 18, 2009, 08:30:29 PM ---Flywheel time.
Solution best i can ponder is to make a new axle shaft slightly oversize on the bearing end. press it into the flywheel, soft jaws will handle the true up of the assembly.
Robert
--- End quote ---
Hi Robert
Thats how I did my flywheel it'll work out spot on. Like the composite fly wheel idea that's what I also did for my Elbow Engine build had some problem with the shrink fit didn't quite get the shrink quite right and because of the material I used for the hub one of the spokes cracked, resorted to high strength loctite that did the trick.
Have fun
Stew
rleete:
Shrink fits are tricky. For something that small, you need damn near line to line. You're probably better off going for a press fit. If you end up a bit too loose, loctite works.
Brass_Machine:
Wow thems some small parts!
Anxious to see it complete.
Eric
foozer:
I thought all was centered, really I did, OH? you mean subtract half the edge finder dia from the . . .
This time around used the indicator, at least I think I am. Rotate the part and get a max run out in the 1-2 thou range. Could fiddly forever but that's within my comfort range for now.
Drilled the holes, 6 this time, they fit. Set it in the soft jaw and as I hate turning that handle I used the old "Dont you wish you had one" Cross slide power handle turner. 6 minutes later she be all nice and even.
Shot showing the failure on the right, could'a sworn everything was centered. The better flywheel on the left. My lunch underneath :)
Now to get the crankshaft attached and true
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