Another pmag question

[danny]

My motor was acting funny when throttled back in the pattern. No popping or weird drama, just an uneven idle. It's never done this before. I ended removing the mag and discovered a very small but perceptible amt of play in the shaft. Book says as much as .030" (?) is ok. Danny says no. Asking the brain trust what your thoughts are.
Thanks
danny

 

[lr172]

Very common problem with pmags. the play messes with the internal sensor gap and you have issues. Needs to be sent in for repair. Be sure your sitting when looking at the new repair rates. have no idea what amount of slop in the bearing is allowed, but if it has already translated to poor performance then the spec doesn't matter.

Are you sure ignition is the source of the rough idle?

 

[mfleming]

My motor was acting funny when throttled back in the pattern. No popping or weird drama, just an uneven idle. It's never done this before. I ended removing the mag and discovered a very small but perceptible amt of play in the shaft. Book says as much as .030" (?) is ok. Danny says no. Asking the brain trust what your thoughts are.
Thanks
danny

When I called E-Mag, they said any discernible play was unacceptable and needed to be sent in for a rebuild. My P-Mag has been at the Hartzel rebuild shop since May 7th for rebuild.

Edit: 250 hours on my P-mag