Holy cow! - how not to true your crank

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Tedh98
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Holy cow! - how not to true your crank

Post by Tedh98 »

I can't tell if this is a joke or he is serious.

[youtube][/youtube]
pumpguy
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Holy cow! - how not to true your crank

Post by pumpguy »

"PRECISION ADJUSTMENTS" Doesn't even know the difference between balancing and truing. A real craftsman!
KDXrider1989
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Re: Holy cow! - how not to true your crank

Post by KDXrider1989 »

yeah this guy does multiple videos that are supposed to be a "joke" but I just find stupid. and its a shame that when someone posts a video like this, someone else out there that doesn't know a thing about mechanics might actually replicate this
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Julien D
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Re: Holy cow! - how not to true your crank

Post by Julien D »

I found it pretty amusing. I guess if someone follows that video to balance their crank, they deserve what they get, lol.
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KDXrider1989
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Re: Holy cow! - how not to true your crank

Post by KDXrider1989 »

Julien D wrote:I found it pretty amusing. I guess if someone follows that video to balance their crank, they deserve what they get, lol.
lol, now THAT would be amusing :lol:
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Re: Holy cow! - how not to true your crank

Post by KDXGarage »

I thought it was a joke, too, until he scooted the portable anvil closer to the gauge. Then it all made sense. Who wants to send me his crank?

JUST KIDDING!! :lol:
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scriberman
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Holy cow! - how not to true your crank

Post by scriberman »

Anyone trued a crank? How did you adjust the webs?
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Tedh98
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Holy cow! - how not to true your crank

Post by Tedh98 »

scriberman wrote:Anyone trued a crank? How did you adjust the webs?
A copper hammer, vice and a wedge. The dial gauges will tell you if you need to rotate the webs or spread/compress the webs.

There are some good, credible sites that give good information on how and what to do.
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Holy cow! - how not to true your crank

Post by scriberman »

That wedge adjusts the width, you still need to give it some to twist the webs on the pin, sometimes more than you can with a copper hammer.
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Holy cow! - how not to true your crank

Post by Tioli »

I wish I had one of those stands now it would be easier. Which gives me a idear that will look even worse. Aluminium plate on the concret floor or borrow one of those hammers
2001 KX125 with a 1997 KDX Tioli Hp motor

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http://www.trials.com.au/forum/viewtopi ... &start=160

Trials.com.au / Forum / All about...me! / My long time friend the prancing horse / page 9
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Tedh98
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Holy cow! - how not to true your crank

Post by Tedh98 »

scriberman wrote:That wedge adjusts the width, you still need to give it some to twist the webs on the pin,
Not always. The indicators will tell you if you need to rotate the webs or spread/compress them.

I've found that it is pretty common to have to go back and forth with twisting and spreading/compressing to zero in on a good runout.
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Holy cow! - how not to true your crank

Post by pumpguy »

I had one case where the steel wheel forgings had warped over time, causing the crank pin bores to be out of parallel with the shafts. No amount of wedging or squeezing the pressed up assembly would them bring back in line. In the end, had to weld up and re-bore the the crank pin bores in line with the shafts.

It was worth the effort though, end result was about .0005" (half a thousandth of an inch) final runout.
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