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Grumman Cougar twin power needs (Dennis Tapsfield drawing) - 10/19/2003 9:14 AM   
PeterH


 

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Last Login: 4/19/2013
From: granby, CT, USA
Status: offline 		I've been wanting to build this for years - - I enlarged a freebie plan of it from a German magazine (Flug & Model Technik) up to what I thought was 'original' size, roughly two meters. I have a pair of HB .25's that I hoped to use in a twin, the Cougar if possible.

Has anyone had any experience with this aircraft, and any comments as to the power it needs?

Thanks very much.

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RE: Grumman Cougar twin power needs (Dennis Tapsfield d... - 10/19/2003 10:58 AM   
William Robison



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From: Mary Esther, Florida, FL, USA
Status: offline 		Peter:

Cougar. F9F. Swept wing version of the Panther. Single engine.

There was another very similar airplane with twin engines, but the name escapes me at the moment.

Bill.


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Real Airplanes have Two Engines
AMA 25139 - More than 40 years.

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RE: Grumman Cougar twin power needs (Dennis Tapsfield d... - 10/19/2003 5:24 PM   
drifter



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From: Baltimore, MD, USA
Status: offline 		The Grumman American Cougar appeared as a construction article in the August 1980 RC Modeler. They may have reprints and full size plans.

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RE: Grumman Cougar twin power needs (Dennis Tapsfield d... - 10/19/2003 7:34 PM   
zipman



Posts: 155
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From: East Brunswick, NJ, USA
Status: offline 		LOOKS INTERESTING. Here are the details from the plans store on RCM Magazine site.
PLAN pl-807
GRUMMAN AMERICAN COUGAR Our Price $15.00

by Dennis Tapsfield,

76" span, 815 sq. in., (2) .20-.25, 6 ch., built-up balsa, plywood, and hardwood, two sheets (2) 34" x 60",


Issue: RCM 8-80,
RCM site - http://www.rcmmagazine.com


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Stan


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RE: Grumman Cougar twin power needs (Dennis Tapsfield d... - 10/19/2003 11:23 PM   
William Robison



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From: Mary Esther, Florida, FL, USA
Status: offline 		OK folks,

Sorry about my earlier comment. I didn't know of the piston twin Cougar.

Bill.


_____________________________

Real Airplanes have Two Engines
AMA 25139 - More than 40 years.

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RE: Grumman Cougar twin power needs (Dennis Tapsfield d... - 2/3/2011 5:58 PM   
gerryhdtv


 

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From: Vancouver , WA, USA
Status: offline 		Been a few years since the last post - but I just came across this so - for what it's worth..

I built the Cougar from RCM plans -
I'll go into details if anyone is interested.

IT FLEW VERY VERY VERY WELL.
I was told it was a fantastic Sky King impersonation(Iknow, not the same plane)
A never had an engine out with it. (pair of OS engines)
It was just a great airplane, but I sold it to someone who made an affer I couldn't refuse.

I have pics and lots of details if anyone is interested - just lemme know -

Gerry

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RE: Grumman Cougar twin power needs (Dennis Tapsfield d... - 2/3/2011 7:56 PM   
Bill Diedrich



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From: Ventress, LA, USA
Status: offline 		It's always interesting to read & see pics of different twins, this is
definately a plane I would consider building as all of Dennis's planes
seem to be excellent fliers.

Bill D.

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Waco Brotherhood #43

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RE: Grumman Cougar twin power needs (Dennis Tapsfield d... - 2/4/2011 5:35 AM   
maxpower1954


 

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From: Rock Hill, SC, USA
Status: offline 		The full-size Grumman GA-7 Cougar was designed from the ground-up as a twin; it's not based on the Tiger/Cheetah. It was very well designed, and has a Vmc a few knots BELOW stall speed. But the timing was terrible, being introduced just as GA was beginning it's long, slow decline. Only 115 were built in 1978-79. It's only been involved in three fatal accidents in the U.S. in over 33 years of flying, an amazing record. I'm sure it would be a fantastic model.

I'd love to have one, but I can only only afford half of a 1957 Cessna 172 right now! Russ Farris

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RE: Grumman Cougar twin power needs (Dennis Tapsfield d... - 2/9/2011 3:11 PM   
Bill Diedrich



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quote:

ORIGINAL: gerryhdtv

Been a few years since the last post - but I just came across this so - for what it's worth..

I built the Cougar from RCM plans -
I'll go into details if anyone is interested.

IT FLEW VERY VERY VERY WELL.
I was told it was a fantastic Sky King impersonation(Iknow, not the same plane)
A never had an engine out with it. (pair of OS engines)
It was just a great airplane, but I sold it to someone who made an affer I couldn't refuse.

I have pics and lots of details if anyone is interested - just lemme know -

Gerry


Hey Gerry let's see the pics of the Cougar and the details, "Subscribed"

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RE: Grumman Cougar twin power needs (Dennis Tapsfield d... - 2/9/2011 5:56 PM   
gerryhdtv


 

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From: Vancouver , WA, USA
Status: offline 		Bill -
  Thanks for the interest!
I'll look for the best pics to scan, and try to post them up here this week.
You know, now if I take a picture it's already digital, finding and scanning older pictures can be a pain!

Gerry




Here's a link to some of my the other planes I've had over the years,
as well as some friends of mine:


http://www.iinet.com/~gjdonovan/PLANES.HTM

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RE: Grumman Cougar twin power needs (Dennis Tapsfield d... - 9/4/2011 6:02 AM   
gyronuts


 

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From: tadcaster, UNITED KINGDOM
Status: offline 		Hi,
I have the chance to purchase a cougaR WITH 2 X OS 40 FS. Would appreciate some of your photos. What did your weigh? thanks. Bill

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RE: Grumman Cougar twin power needs (Dennis Tapsfield d... - 9/4/2011 8:35 AM   
gerryhdtv


 

Posts: 4
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Joined: 8/8/2009
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From: Vancouver , WA, USA
Status: offline 		I have to dig out and scan to get the photos online, but I hope to do that soon.
Weight , ready to fly was 8 1/2 lbs. - Yes, I used a bit of contest balsa to keep it as light as possible.
Power was  (2)  OS .25 FSR turning Master airscrew 9x6's.
The 2 OS 2 strokes really put out the power, and are the SAME as in the prototype that was featured in RCM.
I also had the Goldberg retracts, just like the prototype, I would not do that again. (2 retract servos).

I sold it to the brother of a good friend of mine who "had" to have it right when I needed some cash.
Anyway, photos to come, and thanks for asking!!

Gerry

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RE: Grumman Cougar twin power needs (Dennis Tapsfield d... - 9/5/2011 7:27 AM   
gyronuts


 

Posts: 81
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Joined: 5/23/2003
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From: tadcaster, UNITED KINGDOM
Status: offline 		I have been told that the one I am interested in is 2.5kg fuselage and 3.2 kg wings. about 6kg ready to fly which is about 13.2 Lbs. Seems a bit heavy. Bill

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