hp 61

HB , Helmet Burnhard, engines, Made in Germany. Owned by RJL Industries since 1989.

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hp 61

Postby Doug1939 » Fri Mar 09, 2007 11:20 pm

I am building a p-51 and needing to buy an aluminum spinner. They all have a prop hub inside that screws onto the prop shaft, but I need to know what is the diameter and thread size of the prop shaft on the hp 61
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Postby MECOA » Fri Mar 16, 2007 7:18 pm

standard 1/4x28 thread
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