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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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Rusted gears usable?
I got a rototiller at the dump. The motor is fine, but it wouldn't
shift gears. The "transmission" was a bitch to get apart, but I did it and found rust, as I expected. I'm undecided between pitching it and rehabbing it. Even with the rust removed, the gears will be very rough and wear quickly, but: - it would get very little use (maybe an hour or two per year) - the transmission runs at fairly low speed (900 rpm max input, down to maybe 50 rpm on the wheels) - it only handles 5 hp My feeling is that under these conditions the transmission would last a long time and perform normally, if noisily. Finally, I like to rehab machines, but I don't like to waste my time. A pic of one of the gears after HCl de-rusting and bead blasting (the teeth are about 1/4" wide): http://home.comcast.net/~bobengelhardt/RustedGear.jpg Waddaya think? Bob |
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