Prop choices for OS 91FX

[Rcmaster199 at aol.com]

Piped correctly, this engine has enough grunt to turn much larger props.  
I've seen it turn a 17x10 cut back to 16" on a 81/2 pound model. Nat Penton had  
it on his VooDoo Xpress with a stretched pipe (60 sized), and it ran around 
7600  rpm. Very nice performance; would hover at half throttle.
 
MattK
 
In a message dated 2/4/2005 9:57:01 AM Eastern Standard Time,  
randy10926 at comcast.net writes:

The 14X7 seems to be popular with people flying the widebody60 with  OS90FX 
with a stock muffler.  I used a 13X8 apc with this engine on a  Excelleron90.  
Flies nice; but did not have enough vertical for me on the  stock muffler.
 
Randy
 

--------------  Original message -------------- 

> I know this question has been  asked a thousand times but... What are good 
> prop choices for an OS  91FX in an 8 - 8.25 lb pattern plane? The LHS has 
> quite a few  "sport" APC props, but only a few "pattern" props. I know the 
> blade  shape is different. I picked up a 13x8 "sport" to break it in with. 
>  Just wondering what to expect from each one and what I should consider 
good  
> for tach. readings (no pipe - just the stock muffler). I've got  some 
ground 
> clearance so I can swing a pretty large prop if  necessary. TIA. 
> 
> John Pavlick 



 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.f3a.us/pipermail/nsrca-discussion/attachments/20050204/661f2a1e/attachment-0001.html