Crank Run Out????

[efulton]

I just tested the run out on my 2002 800 Edge XC crank and its at .0030". How concerned should I be? Am I riding a ticking time bomb?

 

[Reaper]

If you are riding an 800, then you are riding a timebomb period.

 

[Ridgid302]

If you are riding an 800, then you are riding a timebomb period.

Hahaha. Not quite so.
I was told that about .0040" it's time to think about a rebuild. It'll be much less expensive to do it preventatively. Just curious, how many miles do you have?

 

[efulton]

I have 5200 miles and its running strong as ever. I am hoping to put another 5000 on it before I scrap it. I am just going to do a run out test yearly and as soon as she gets to .004" then I will have the crank redone. Thanks for the help!!

 

[Reaper]

Which time?? I got 2900 miles out of it the first time and 2700 miles out of it the second time. Mountain riders/boondockers tend to lose the cranks more often than the trail riders do.

 

[Outbound86]

I checked mine on my 700 Edge 2002 and it was .0004 -- I am very happy with that number.

 

[Kraven]

I checked mine on my 700 Edge 2002 and it was .0004 -- I am very happy with that number.

Are you sure you measured that properly?

lol

 

[AndrettiDog]

He probably means .004". .0004" is four millionths of an inch - pretty tough to measure.

 

[Goinboardin]

Not to be an ***, but 0.0004 is four ten thousandths of an inch. Good instruments can measure that, they would be expensive though.
0.0 is tenths place
0.00 is hundreths
0.000 is thousandths
0.0000 is ten thousandths
0.00000 is hundred thousandths
0.000000 is millionths.

 

[AndrettiDog]

Not to be an ***, but 0.0004 is four ten thousandths of an inch. Good instruments can measure that, they would be expensive though.
0.0 is tenths place
0.00 is hundreths
0.000 is thousandths
0.0000 is ten thousandths
0.00000 is hundred thousandths
0.000000 is millionths.

Oh, yeah. I think my abacus is broke.

 

[Kraven]

.01, .001,. .0001, .00001 ??

He probably means .004". .0004" is four millionths of an inch - pretty tough to measure.

.0004 is actually four ten thousandths of an inch, or slightly less than half a thousandth


Look guys, he knows what he's talking about, I was just messin' with him (note the "lol" on line 2)

 

[bb900]

I had up to 11 thou out then I removed engine put on shelf. Need to rebuild crank and cut cases crank was straightened twice did not last, but pulled out be for any damage was caused.