cougar 2000 c of g

[ady]

hi all , hope every one is well , i`ve put my cougar 2000 back together , this time electric , 4s , turnigy motor , etc , but i can`t remember where i had my centre of gravity , i`ve done the 1/3 of the wing trick where its 1/2 inch further back , has anyone a book they can look in please , cheers ady 

[inspector9566]

Ady try this link I use it alot and it works every time then put it on your fav list for later

[inspector9566]

Ady what tgy motor did you use I have a couger that I love, its such a good plane and I want to convert it to electric what mah pack are you going to use

 

you will have to let us know how it flys flight times and the like when you get it back in the air

[ady]

cool bit of kit to work out the c of g , thanks , the motor is a 3542-1100 on a 10/6 prop , runs at 38amps flat out , 543watts according to my meter , the 4s batt is a old 5350 i was given , it hangs very easy in my hand , will try a 11/6 prop too , results posted when shes flown , hopefully this coming weekend , one thing tho , i may try a e-flite 32 on a 11/6 as the turnigy has had a hard life , cheers ady

[inspector9566]

nice one Ady hope it goes well. Im flying tomorrow going with the couger on ic an acromaster and a cularis mich take another scratch built with a saito 91 as i have just rebuilt the engine in that one so it could do with a run. 

[weasel]

Hello Ady,   i have just looked at the weston cougar, assembly instructions. and the CofG for beginners is 100mm-115mm from the leading edge. and for the advanced flyer. 115mm-135mm. 

 

     Hope this helps regards Weasel......

[ady]

thanks weasel , i`ll check my later to where i quessed

[ady]

had several great flights this morning , flew straight off the deck with very little trim required , considering its a cheapo motor , a 11/6 nitro prop and a old li-po she flew spot on , a ten min flight put back 3500 into the pack , and thats with prop hanging at the end too , been flyin heli`s lots lately and to be able to relax with the cougar was perfect , now i wanna buy a better motor n electric prop , brc-hobbies have a 46 size brushless for £29 which i`ll put a 12/6 e prop on , cheers , a happy ady 

[ady]

http://www.youtube.com/user/gboulter#p/u/1/SngGPE-jfpE

a video  

[Dave Bran]

Been gradually moving my one's CG back and back.....still have not got it back where I want it..............the "manual" is very very conservative........to get it any further back now I'll have to move the servos or use ballast, which I hate doing.

 

(My one having an Irvine 39 Fun Fly engine)

[J BENNETT]

When using the calculator in the provided link do you include the width of the fuselage and so project the wing shape to the centre line of the fuselage. It appears that way on the diagram.

 

Thanks

JB