Excelleron with OS 91FX in Intermediate ?

[Fletcher, Richard]

I have a TT 120 and like others have had problems with it's idle. Does
anyone have any suggestions on how to fix the problem? 
 
 


Thanks, Rich 





-----Original Message-----
From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org] On
Behalf Of george kennie
Sent: Wednesday, December 22, 2004 4:15 PM
To: discussion at nsrca.org
Subject: Re: Excelleron with OS 91FX in Intermediate ?


For me it was a combination.  I saw one fly in Oct. in a pretty stiff
crosswind and was quite impressed how well it appeared to handle. Then the
price was in the area that I felt was more than reasonable so I went for it.
I still have to come up with a better exhaust arrangement than I am
currently employing as I would like to be a little quieter. 
G. 

Bob Pastorello wrote: 


The 1.20 class two-strokes in this airplane will probably provide the best
power at the lightest overall weight.  The ST is overkill, and added about
8-9 oz overall more than should have been there, because it starts out at 31
oz, then add the exhaust system.  Most of the 1.20's, I think, are coming in
at 31-33 oz WITH exhaust systems, and that reduces wing loading about 2
oz/sq.ft. I'm ready to test hop, awaiting the header, which is in process.
It is surprising to see this one design catch on so rapidly.  Was it price?
Performance?  
Bob Pastorello 
NSRCA 199  AMA 46373 
rcaerobob at cox.net <mailto:rcaerobob at cox.net>  
www.rcaerobats.net <http://www.rcaerobats.net>    

----- Original Message -----
From: Randy <mailto:randy10926 at comcast.net> 
To: discussion at nsrca.org <mailto:discussion at nsrca.org> 
Sent: Tuesday, December 21, 2004 9:10 PM
Subject: Re: Excelleron with OS 91FX in Intermediate ?
 I order a Tiger Shark 1.20 for my excelleron90.  Should be about
right.Randy 

----- Original Message -----
From: Paul  <mailto:phoran at vvm.com> Horan
To: discussion at nsrca.org <mailto:discussion at nsrca.org> 
Sent: Tuesday, December 21, 2004 6:37 PM
Subject: Re: Excelleron with OS 91FX in Intermediate ?
 Bruce,    Thanks, that's what I am concerned about.  The OS 91 FX most
likely will require a pipe to do the job and the Excelleronis not set up for
a pipe.  I may have to resort to a larger 2 stroke engine.  Bob Pastorello
is using a Super Tiger 2300.Not sure I wish to go that big !Thanks,Paul 

----- Original Message -----
From: Pattrnflyr at aol.com <mailto:Pattrnflyr at aol.com> 
To: discussion at nsrca.org <mailto:discussion at nsrca.org> 
Sent: Tuesday, December 21, 2004 5:22 PM
Subject: Re: Excelleron with OS 91FX in Intermediate ?
 I have a scratch built Typhoon 909 that weighs around 8 to 8.5 pounds.  The
"Littlephoon" has 909 square inches of wing, about a 70 inch wing span.  I
fly intermediate at 5500 feet MSL.  The YS91 did not have enough to fly the
Int pattern, because of the two maneuvers you mentioned.  I put a YS 110 in
the Littlephoon, and now I have plenty of power swinging a 15X8.  I have no
experience with the OS, but I would think the YS would be a little lacking.
See ya, 

Bruce

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