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Old January 23rd, 2008, 21:30   #9
mcguyver
 
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Join Date: Aug 2005
Location: Northern Alberta
Quote:
Originally Posted by Flatlander View Post
Hmm. That would make sense. I noticed while checking my shimming I noticed the selector plate seemed 'bubbled out' and thought that somehow the sector gear bushing was pushing it out...double checked and it was shimmed fine so I figured nothing was wrong. I have yet to tinker much w/ the trigger assembly and selector plate so I'll have to take a gander and see now.

Mac, is there any specific cause of this selector plate melting or anyway to prevent it?
Some companies make switches that don't have these finger contacts. The fingers are there to provide an electrical safety, to compliment the mechanical safety provided by the safety latch that contacts the trigger.

Fewer contact points are better for the flow of current.

Spinning bushings are more likely to heat the mechbox shell than the selector, as they cintact much more of the shell. But all that metal will only act as a heatsink anyways, so I don't see that being a problem. But look at the selector and if a bushing is heating it, thermal damage will be evident.

More current + more contact points (like small finger contacts) results in more heating of contacts. Heat is what melts things like the trigger contacts and selector plate.
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Last edited by mcguyver; January 23rd, 2008 at 21:33..
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