On 7/18/07, Jeff Blamey <[EMAIL PROTECTED]> wrote:
Solder melts in the 500F range as I recall, the tips of the motor could be quite a bit different temperature than the outer case or the area where the temp gage can get to.
Typical lead-tin solder melts at 360F. The point though, is that you don't need to reach this temperature to have a failure. Any time the motor is spinning there is a load on the solder joints. Each time you heat and cool the motor with those clips under a centrifugal load, even if you get nowhere near the solder melt temperature, the solder joint weakens a little more. Finally one day it lets go. Y'know, the more I think about wrapping a Kevlar band around those clips the more I think it's worth trying. Is there enough clearance between the armature and the case? It's probably a cheap and easy trick for someone who's done Kevlar banding on series motors. Chris
