So, to educate the masses, here's the difference:

Your wife's "nylons", grbrown, melt off at a much lower temperature then the "nylon" inside our engines. Ask me how I know.

"Thermoset Vs. Thermoplastics"

"Though thermoset plastics and thermoplastics sound similar, they have very different properties and applications. Understanding the performance differences can help you make better sourcing decisions and improve your product designs.

The primary physical difference is that thermoplastics can be remelted back into a liquid, whereas thermoset plastics always remain in a permanent solid state. Think of thermoplastics as butter – butter can be melted and cooled multiple times to form various shapes. Thermoset is similar to bread in that once the final state is achieved, any additional heat would lead to charring."


So, getting back to your comment, grbrown, your wife's nylons might melt, but my nylon comdom may degrade, but still hold it's shape, although charred in its use.

All in good fun, but get the drift?


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To reiterate my previous post, here's the molding temp of plastics of all types...the heat required to get the plastic to flow easily and evenly into a mold to make the part. This is a far higher temperature than needed to cause a finished part to start to degrade from high temps.

http://plastictroubleshooter.com/The...melt_temps.htm


Attached is a picture of a typical cam chain tensioner POS plastic that is degrading at only 30,000 miles. These are from my '06 Ultra. Note they are not just worn, but are chipping away. I had all those "chips" floating around in my engine. Note also the crack in the one on the left. I believe that was caused by repetitive heat stress of the part. If that piece had broken off,,,,,well, that was a major problem just waiting to happen. Luckily my pre-emptive strike on replacing these POS parts with gear drives solved that potential problem.

An engine that has virtually no control of internal temps, has no business having plastic parts inside of of it! IMHO!

 

Ya know, he's got some gems in there though.

Like this one:

"Harley-Davidson motorcycles are huge lumbering beasts that are unstable to ride and tend to slide sideways and fall down when the brakes are applied..."

And this one:

"The Sportster is actually a perfected machine for it is a racing engine design. "

And this one:

"Most riders are totally unaware that the new Sportster is a perfected mechanical design with zero defects."