3.5" spinner for p51 question?????

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3.5" spinner for p51 question?????

Postby Bubba » Mon Jan 05, 2009 8:27 pm

I just got my order in for a 3.5" spinner, everything looks good and fits. My question is on the back of the aluminum backing plate there are no groves for it to grip but there are in the front, so when I try to tighten the nut the plate spins thus not allowing it to tighten, which even if I were able to tighten it I am afraid it could still spin freely... Is this normal or do I have an incomplete backing plate??
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Postby MECOA » Wed Jan 07, 2009 10:44 am

No there are no grooves on the back side of the spinner plate. The grooves are only on the prop side. You engine prop drive has grooves on it and when tightened it should grip the spinner plate.
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