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Everything Dirt Bike
General Dirt Bike
A little engine help here
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<blockquote data-quote="cleonard" data-source="post: 103902" data-attributes="member: 21"><p>I would guess that it is a phenolic thermosetting plastic. Thermosetting means that it does not melt at all. It stays hard right up to the point that it burns. Some phenolic can have service temps of 450F there are others like polyimide that are good to 550F and some recent products can take 650F.</p><p> </p><p>Polycarbonate is known as a thermoplastic and starts to melt at 300F. Not good in an air cooled engine that's for sure.</p><p> </p><p>Sorry SRAD, that plastic for the guides is some pretty hard stuff as far as plastic goes.</p></blockquote><p></p>
[QUOTE="cleonard, post: 103902, member: 21"] I would guess that it is a phenolic thermosetting plastic. Thermosetting means that it does not melt at all. It stays hard right up to the point that it burns. Some phenolic can have service temps of 450F there are others like polyimide that are good to 550F and some recent products can take 650F. Polycarbonate is known as a thermoplastic and starts to melt at 300F. Not good in an air cooled engine that's for sure. Sorry SRAD, that plastic for the guides is some pretty hard stuff as far as plastic goes. [/QUOTE]
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A little engine help here
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