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Old 02-14-2013, 03:23 PM   #671
ebrabaek
Beastly Adventurer
 
Joined: Jan 2010
Location: Grand Valley, Colorado
Oddometer: 4,673
Quote:
Originally Posted by vtbob View Post
It is almost up to 40F here today so I opened up my f650 to look at the stator.

Yep it is pretty toast..black. Pretty much like Emmmbeedee's wife's. Mine has not failed but I order a Electrosport today..mainly because they ship with connectors on.


when looking at the black stuff on the stator...I could not help but think of cabonized oil....not just the stator epoxy failing.

The carbonization is clearly worst on just some of the poles.

A wild an no way substantiated though that oil carbonizes on overly hot stator, build up the oil based carbon crud which act as insulation and accelerates the over heating process till hard failure occurs. could this mean that using more temperature resistant full syn oil would delay stator failure?

is this a case for only running full syn oil in the f800 engine?
Interesting assessment. After things have been cooked at 400 F., for a good long while, I would be hard pressed to, to id the diff. between a Polymer, and carbonized oil. It does seem plausible to me, that if oil caking builds up topside, it could add a heat insulator, preventing the coil from releasing enough heat to sustain itself.... Maybe.
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Erling
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