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Repair or replace?

Elektrishun

Well-Known Member
Hello

I found hairline crack on the main pulley driven directly by the motor:

IMG_20241030_145122.jpg
IMG_20241030_145111.jpg


The tapered pin seemed easy enough to remove but that doesn't matter now. Any suggestions on what would be the best way to repair the crack or is replacement the better option?

Thank-you
 
I am wondering what kind of forces can be generated at that weak point and is there the possibility of some additional vibration being created?
 
If the pin is installed and goes through the full axle and the other side of the hub then I would not worry
 
I wouldn’t worry too much about it, the tapered pin still goes through the shaft and the other side of the collar so it shouldn’t give a problem, if I was worried about it I’d cut a groove down the crack and braze it. Or even easyer drill another hole 90 deg to it and use a taper reamer to size for the pin.
 
Hello

I found hairline crack on the main pulley driven directly by the motor:

View attachment 53587View attachment 53588

The tapered pin seemed easy enough to remove but that doesn't matter now. Any suggestions on what would be the best way to repair the crack or is replacement the better option?

Thank-you
If I'm correct, the pin hole will prevent the crack from spreading. So I'd not perform any intervention
 
I would repair or replace. If you look closely at the first picture. There are several cracks radiating outward from the 12, 2,3,6 o'clock positions.
 
I would repair or replace. If you look closely at the first picture. There are several cracks radiating outward from the 12, 2,3,6 o'clock positions.
Hmmm not seeing those other cracks.
 
Hello

I found hairline crack on the main pulley driven directly by the motor:

View attachment 53587View attachment 53588

The tapered pin seemed easy enough to remove but that doesn't matter now. Any suggestions on what would be the best way to repair the crack or is replacement the better option?

Thank-you
Another approach to consider would be turning the od of the hub so it is cylindrical and make a collar to clamp over the hub. It could be one piece with one tightening screw or two piece with two screws (probably better). Just make the collar, drill and tap for the screws and cut the collar in half at the centerline at rt angle to the screws.

Chris
 
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