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Prop reamer

Old 10-12-2009, 11:58 AM
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flyalot
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Default Prop reamer

Where can I obtain the correct size prop reamer for the OS FT 160 and OS FT 300?
Joe
Old 10-12-2009, 09:48 PM
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Laird SS
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Default RE: Prop reamer

Have you tried a local hobby shop? If not there, how about Tower Hobbies?
Old 10-13-2009, 10:11 AM
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flyalot
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Default RE: Prop reamer

Tower carries a 12mm reamer, that takes care of the OS FT160. The OS FT300 requires a 13 mm reamer. Tower does not have that size. The parts listing for the FT 300 does not list a prop reamer. The search continues. Joe
Old 10-14-2009, 09:35 AM
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Bax
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Default RE: Prop reamer

The propshaft thread diameter of the O.S. FT-160 is 5/16", not 12mm. The FT-300 has a 3/8" propshaft. Both engines have a 24 thread pitch. They are NOT metric.

The Great Planes reamer will work with both:

GPMQ5005 4-STEP STD PROP SHAFT REAMER US$11.99

These parts can be ordered through any hobby retailer who sells Great Planes kits and accessories.
Old 10-14-2009, 01:34 PM
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flyalot
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Default RE: Prop reamer

Bax,
Thanks for the reply. The prop shaft size and thread are as you say. Both of my engines are equipped with OS safety propnut assy. The OD of the larger part of the safety propnut for the 160 is 12mm and tower does have a reamer for that.
The 300 safety propnut OD is 13.25 mm(.52"). I looked it up in the parts list. I found a reamer on ebay last night that is 13mm and bought it $19.00 including postage. Hopefully the .25mm difference will not be enough to cause prop mounting problems. Again thanks for answering.
Joe

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