The Craftmans Shop > Model Engineering
Side Valve i.c. engine from Bar stock
Brian Rupnow:
Had time for a "quicky" before I left the house this morning.---No, not that kind of "Quicky" ya dirty buggers!!! I finished and installed the tappet guide, in bronze. The corners aren't mitered yet, as I thought it best to bolt all the mating pieces together and miter them all at the same time so the corners line up nice.
Brian Rupnow:
Making a 4" diameter flywheel from a 6" diameter slab of bronze x 1 3/8" thick may be cheap---(I got the bronze for nothing), but it sure isn't easy!!! That's a lot of cutting on my old "push as you go" 14" jet bandsaw!! I have a good center punch mark where I anchored one leg of the compass that drew the 4 1/8" circle, and I will use that center punch mark for setting up in my 4 jaw chuck in the lathe to turn the flywheel.
Brian Rupnow:
Slowly the flywheel is taking shape. I centered it in my lathe 4 jaw chuck around the center punch hole that I mentioned in a previous post, then turned most of the outer diameter (except the part held by the jaws) and drilled and reamed the center hole and the two large counterbores and faced the exposed side. My 3 jaw chuck will hold up to a 4 1/8" diameter piece with the reversed jaws in it, and the flywheel was now 4" diameter on the machined outer diameter, so I changed chucks, flipped the flywheel around, and carved away the material to leave the 2" diameter spigot as shown in the picture. I still have to take my evil trepanning tool and put the recessed annulus in the exposed side, and then add the 3 tapped holes to hold the starter ring and put in a keyway and set screws. I an very busy with other things right now, so I just do a bit of machining whenever I can fit it in.(And if I have any energy left!!!!)
Brian Rupnow:
Cowabunga!!! I like that!! And that is the last easy part finished for a while. I want to see what this thing looks like with a cylinder on it.
Brian Rupnow:
I just had to share this, because I know all you old grandpa types like me will love it. This shot was taken last week as the girls were heading back to school for 2014. Brennen is too young for school, but he wanted to be in the picture. Wife and I just got back from our first "overnighter" with all 3 grandkids. Drove 185 Km up to Bancroft to see my 94 year old mother and wish her a happy birthday. There is always a certain amount of trepidation when taking a grandkid away overnight for his/her very first time, but Brennen was a trooper and probably slept better than I did. "Little Grandma" was happy to see Bren, as the last time she seen him he was a new born.
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