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Best prop for OS FS120 Surpass? - 12/3/2012 1:53 AM   
Warbird40


 

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From: Moreno Valley, CA, USA
Status: offline 		I just finished breaking in my OS FS120 Surpass with a 16X6 prop. Which prop would you guys recommend for the most speed? Its installed on a ModelTech Dragon Lady which slow downs and floats for landing, so I am thinking of a 16x8 or so.

Thanks


< Message edited by Warbird40 -- 12/3/2012 3:30 AM >

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RE: Best prop for OS FS120 Surpass? - 12/3/2012 12:56 PM   
dignlivn


 

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I have a 14x8 on my 120.


Bob

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RE: Best prop for OS FS120 Surpass? - 12/3/2012 6:04 PM   
Warbird40


 

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Status: offline 		I went thru all my props and found a 15X8, so I will try it

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RE: Best prop for OS FS120 Surpass? - 1/17/2013 4:54 PM   
Rate1



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Status: offline 		On my OS120FS I had a 16x6 on my previous Extra, on my current Revolver, with same engine, I use a 15x8 for a bit more speed. Both are perfect for this engine.

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RE: Best prop for OS FS120 Surpass? - 1/17/2013 5:43 PM   
Warbird40


 

Posts: 271
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From: Moreno Valley, CA, USA
Status: offline 		Thanks. I did the break in with the MA 16x6 and left it there, but I will try the MA 15x8 after a gallon or so.

Best regards,
Ed

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RE: Best prop for OS FS120 Surpass? - 1/18/2013 8:14 PM   
jaka


 

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Status: online 		Hi!
The Master A is no good! Much better is a RAM or Graupner "sonic"...or APC. 16x6 or 15x8!
14x8 is way too small!

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RE: Best prop for OS FS120 Surpass? - 1/18/2013 9:55 PM   
maukaonyx


 

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Status: offline 		I have a 16x8 MAS on a CG Ultimate, a 15x8 MAS on a Yak-54. Both are not real fast, but seem to be propped just right for those planes, providing fairly constant speed in all attitudes. I think for speed I would go down in diameter an inch and up in pitch by one or two or more, and also go to APC props. Dunno for sure, just guessing. Jon

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RE: Best prop for OS FS120 Surpass? - 1/19/2013 5:39 AM   
VCScott



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From: Valley Center, CA, USA
Status: offline 		Hey Warbird, around 20 years ago I was running an APC 14/12 on mine. It was in my CG Ultimate biplane and it handled it just fine. Was fast for a biplane and still had unlimited vertical. I'm still running the same engine now in my Wildstick with an APC 16.5/5.5. I tried a 15/8 and a 16/6 but with both props it seemed to over rev and knock at full throttle. This engine likes to be loaded, so for better hovering I think I'll try a 17/5 next.


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