What kind of bushings do you use?
Jig wheels
Started by
mhslot13
, Dec 27 2021 02:07 PM
30 replies to this topic
#26
MSwiss
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Posted 29 December 2021 - 09:12 PM
Mike Swiss
Inventor of the Low CG guide flag 4/20/18
IRRA® Components Committee Chairman
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990), eight G7 main appearances
Eight-time G7 King track single lap world record holder
17B West Ogden Ave., Westmont, IL 60559, (708) 203-8003, mikeswiss86@hotmail.com (also my PayPal address)
Note: Send all USPS packages and mail to: 692 Citadel Drive, Westmont, Illinois 60559
#27
Bill from NH
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Posted 29 December 2021 - 09:42 PM
mhslot13, on 30 Dec 2021 - 02:03 AM, said:
Yes .it's easy .just heat them up with blocks in place and vola
Better you than me. 
Bill Fernald
I intend to live forever! So far, so good.
I intend to live forever! So far, so good.
#28
MSwiss
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Posted 29 December 2021 - 10:24 PM
I ran the scenario by one of my racers tonight.
He surmised the situation and came up with the same conclusion.
You heat up one side, with the metal chassis, axle, and aluminum jig wheels(if you don't use Corian), acting as a heat sink, and then you switch to the other side, and while you are heating up that side, the original side cools down.
You go back and forth, until the jig wheels get too hot, to push them down with your bare finger tips, and you give up.
When I remove old bushings or bearings, I load the side of the tip with solder, for max heat transfer, and lay the tip on the side of the bushing, with no regard of using it again.
If possible, I punch them out from the inside, because prying them out with an X-Acto knife, cocks them.
I can get them out quickly, that way, helped immensely by the fact you are only doing one task at a time.
But to move them, you have the axle in the way, and you'll never get that great heat transfer.
He surmised the situation and came up with the same conclusion.
You heat up one side, with the metal chassis, axle, and aluminum jig wheels(if you don't use Corian), acting as a heat sink, and then you switch to the other side, and while you are heating up that side, the original side cools down.
You go back and forth, until the jig wheels get too hot, to push them down with your bare finger tips, and you give up.
When I remove old bushings or bearings, I load the side of the tip with solder, for max heat transfer, and lay the tip on the side of the bushing, with no regard of using it again.
If possible, I punch them out from the inside, because prying them out with an X-Acto knife, cocks them.
I can get them out quickly, that way, helped immensely by the fact you are only doing one task at a time.
But to move them, you have the axle in the way, and you'll never get that great heat transfer.
Mike Swiss
Inventor of the Low CG guide flag 4/20/18
IRRA® Components Committee Chairman
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990), eight G7 main appearances
Eight-time G7 King track single lap world record holder
17B West Ogden Ave., Westmont, IL 60559, (708) 203-8003, mikeswiss86@hotmail.com (also my PayPal address)
Note: Send all USPS packages and mail to: 692 Citadel Drive, Westmont, Illinois 60559
#29
Paul Lindewall
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Posted 30 December 2021 - 07:32 AM
mhslot13, on 30 Dec 2021 - 02:03 AM, said:
Yes .it's easy .just heat them up with blocks in place and vola
I'm assuming you use two soldering irons and heat both up at the same time? Otherwise, all you're going to do is angle the bushing on one side, then the other, then go back to the first...
#30
MSwiss
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Posted 30 December 2021 - 09:56 AM
MSwiss, on 28 Dec 2021 - 03:18 AM, said:
Correct, Paul.If you've never done it before, and assuming you have adjustable/undersize bushings, or oversize hole pillow blocks, it's still a 3 hand, 2 soldering iron, operation.
Hence my earlier post.
Mike Swiss
Inventor of the Low CG guide flag 4/20/18
IRRA® Components Committee Chairman
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990), eight G7 main appearances
Eight-time G7 King track single lap world record holder
17B West Ogden Ave., Westmont, IL 60559, (708) 203-8003, mikeswiss86@hotmail.com (also my PayPal address)
Note: Send all USPS packages and mail to: 692 Citadel Drive, Westmont, Illinois 60559
#31
Dave Crevie
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Posted 30 December 2021 - 10:01 AM
I just grind the worn tires down to the next common size; i.e. .820s to .812, .812s to .790, .790s t0 .765, 765s to .720, 720s to .700, .700s to .680.
Each chassis I build I set up to tech for the full size tire, plus a bit just to be safe. I keep at least one extra set of tires for each car, more if I am at a major event. I don't like to depend on the track having enough stock to cover every entrants needs.
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