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Old 04-30-2012 | 06:48 AM
  #275  
MTK
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Joined: May 2004
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From: Whippany, NJ
Default RE: OS 33GT Gasoline Engine for Pattern

ORIGINAL: MTK

18x10 3 blade Mezjlik, 8150-8200 rpm at full revs, 7400 at mid throttle where I fly (Avgas ran about 7700)
20x10 MDK Hybrid, 7920-7950 rpm at full revs, 7150 at mid throttle where I fly (Avgas ran about 7400)

Just received 19x12, 19x13, 20x12 and 20x13 Xoar electric wood blanks to be laminated into MDK Hybrids. I'll have numbers in due course.
I have the 19x13 laminated and am in process of balancing. That's looks like quite a bit of prop and it is, but I think the OS will handle it. I need to bring rpm down to 7100 give or take to get the sound really down.

I will post numbers when I get them later this week. The 19x13 is also a XOAR electric woodie, reshaped to an apc style profile and laminated with carbon sock. If I remember I'll post some photos of the molding plates