Broken Flywheel while removing ring Gear

yoyo27983 · Dec 28, 2013

I had the machine shop replace the ring gear on my Super A's flywheel. It cracked and a sliver of about 12 inches or so broke off the edge. They said it would not make that much difference at 1500rpms But I want more opinions on this before I re-assemble. I guess I could get them to grind the edge down flush all the way around to re-balance the thing. What do yawl think?

Farmallhal · Dec 28, 2013

Any machine shop I have ever dealt with would have replaced it with an undamaged one before returning it to me. An undamaged flywheel can easily be found off of a salvage tractor with a little effort. By cracking off the edge you very likely have a small crack somewhere along the broken edge which will migrate into the center and result in a multi-piece flywheel over time and require replacement later if not resolved at present. I don't have a feel of how much additional wear would be transmitted to the rear main bearing due to the out of balance caused by the ring gear damage but others will probably have some input as I don't know how well balanced they were to begin with, Hal.

gab · Dec 28, 2013

I did that on my Super C when I changed the ring gear about 15 years ago. It's just like a little piece of flashing, a sliver 6 or 8 inches long. I don't see a problem.

Janicholson · Dec 28, 2013

12" of weight at the edge is too much imballance in my opinion. They need to machine the remainder off and clean up the broken surface. Pinning the ring gear on if it is at all loose is also a good idea. If that much weight was needed on a tire, you would get a different tire, not run it out of balance. Jim

notjustair · Dec 28, 2013

I might be superstitious or something, but I wouldn't go to the trouble of putting it in. If a piece chipped off where else is it cracked? You are running a stock tractor so the damage would be less, but we've all seen videos of pullers cut right in half when a flywheel grenades. It would't be pretty at 1500 rpm either. That unbalanced thing will put stress places you don't want it.

If I left it like it is I would be thinking of it every time I hit the starter.

Jim Becker · Dec 28, 2013

Gotta' agree with gab on this one. I've seen it before. You would probably need an apothecary scale to weigh the broken piece.

SDE · Dec 28, 2013

If you want the machine to stand behind their work, then lean on them a little. If they have a lathe the will handle turning it, it would not take hardly any effort at all it trim enough off of it all the way around to even everything up again. You paid them to do an easy job. They should have been able to do it correctly. Did they heat it up to put it on, or did they use a press? If they pressed it on, they did it wrong.
SDE

pete 23 · Dec 28, 2013

The edge on that flywheel does nothing for holding the ring gear on. Just have them take the remaining edge off all the way around. Not unusual to see a chunk out of the edge on those engines.

gene bender · Dec 28, 2013

Dont worry that flywheel doesent go fast enough for that to be a problem. There are lots of them running around like that.

gene bender · Dec 28, 2013

Apearently you aren that familiar with that flywheel that little part broken off doesent make any difference in thaat engine.

gab · Dec 28, 2013

All it would take to rebalance that flywheel is a 6 inch piece of tinsel off the xmas tree glued on.

Tom Fleming · Dec 29, 2013

with as many of these as there are in the boneyards, why not just get a different flywheel and remove all doubt? I bet one can be had for $20.

Broken Flywheel while removing ring Gear

yoyo27983

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Farmallhal

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gab

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Janicholson

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notjustair

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Jim Becker

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SDE

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pete 23

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gene bender

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gene bender

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