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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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#1
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Replaced belt on lathe but keeps coming off
Hi gents,
The subject says it all....leather belt, used the alligator belt lacing, but the belt comes off often when I first engage the power. Once it gets going, most of the time, it stays put, just about 25% of the time on initial power up the belt falls off. Is this because it is a bit hard (kind of like a baseball mitt when you first start using it..... Just wondering if there is a trick to break'n these belts in. Thanks to all John |
#2
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CAMCOMPCO wrote:
Hi gents, The subject says it all....leather belt, used the alligator belt lacing, but the belt comes off often when I first engage the power. Once it gets going, most of the time, it stays put, just about 25% of the time on initial power up the belt falls off. Is this because it is a bit hard (kind of like a baseball mitt when you first start using it..... It's more likely the result of misaligned sheaves, or some sort of defect in the belt (a twist or something). GWE |
#3
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CAMCOMPCO wrote:
Hi gents, The subject says it all....leather belt, used the alligator belt lacing, but the belt comes off often when I first engage the power. Once it gets going, most of the time, it stays put, just about 25% of the time on initial power up the belt falls off. Is this because it is a bit hard (kind of like a baseball mitt when you first start using it..... Just wondering if there is a trick to break'n these belts in. Thanks to all John Are the ends of the belt square to each other at the join ? If one is cocked it will get tossed . Personally I would opt for " Clipper " brand lacing . Luck Ken Cutt |
#4
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Are you putting the belt on with a 1/2 twist. All the flat belt
machinery I have run always used a half turn to keep them in place. I am not sure why,however. Paul |
#5
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"CAMCOMPCO" wrote in message oups.com... Hi gents, The subject says it all....leather belt, used the alligator belt lacing, but the belt comes off often when I first engage the power. Once it gets going, most of the time, it stays put, just about 25% of the time on initial power up the belt falls off. Is this because it is a bit hard (kind of like a baseball mitt when you first start using it..... Just wondering if there is a trick to break'n these belts in. Thanks to all John Sometimes a little belt dressing will help it stay on track. |
#6
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Not sure about the 1/2 twist thing, belt dressing might do the trick
but seems to be just a temp fix....I'll bet I assumed "close enough for government work" was close enough, maybe I should re-check the alignment when I get to the shop next. I was just wonder'n if I missed some sort of "that always happens" kind of thing...... Thanks guys John |
#7
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It might be coming off because it is slipping on the drive sheave during
startup. I have noticed that flat belts often come off when they slip. Just a thought. Don Young "CAMCOMPCO" wrote in message oups.com... Not sure about the 1/2 twist thing, belt dressing might do the trick but seems to be just a temp fix....I'll bet I assumed "close enough for government work" was close enough, maybe I should re-check the alignment when I get to the shop next. I was just wonder'n if I missed some sort of "that always happens" kind of thing...... Thanks guys John |
#8
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Quick update,
It turned out to be that I had a slight misalignment from end to end. I undid the glamp, aligned the two ends better, and presto....the belts were only off by a tiny bit, but, it seemed that this tiny bit was more than enough to cause the trouble. thanks to all for the help...once again :-) John |
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