The Craftmans Shop > PowerSports
1954 Ford 850 Tractor w/blown Head Gasket (at the very least)
vtsteam:
I found I could comfortably cut 5 thousandths at 120 RPM without much strain. Just a light "ting, ting ting..." Sounded like Christmas bells in the shop.
You can see the hardened casting scale as the darker area surrounding the rough sand surface. The insert had no trouble cutting through both.
awemawson:
Looking very promising Steve :thumbup:
Were you not tempted to take the head to the local engine re conditioner who would have a slide over grinder :ddb:
vtsteam:
Haha, no Andrew I wasn't! A lot more satisfying making a tool and using it. One more weapon in the arsenal!
Once I had the back flattened, I flipped the casting over and took the skin off the front.
Andrew what I did wish for, however, was a motorized mill slide! Man that was slow going to get that depth of casting scale off -- I probably did 20 passes total by hand standing there (too dumb or lazy to stop and go get a stool!) And at that slow RPM with a single cutter, I wasn't a ball of fire with the feed.
Good to be sitting down and typing this now. :coffee:
mattinker:
You seem like a happy camper!!
Regards, Matthew.
vtsteam:
I am Matt! :)
I guess tomorrow's the big day, with the tractor head.
Interesting discoveries today:
I ran the test casting back and forth to check whether it cut the same at the back and the front of the fly cutter. It didn't. So I figured tram was off. After a cut it would ting on the front and it was silent on the back.
So I traversed the casting back with the motor running and lowered the head until I heard a ting at the back. The difference in height was 1-1/2 thousandths.
Now the interesting part is that in the past with a conventional fly cutter, it hit at front and back. The reason it doesn't any more is because the new fly cutter is so stiff. The conventional fly cutter probably had a tiny amount of spring back, and also never quite cut to actual depth. This new one does.
I figured to correct that small a tram error, I'd need less than 1 thou shim. On a hunch I just tightened the bolts on one side of the mill, just a crack. That did it and the tings were now equal on both sides. :ddb:
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