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saf47 · 05-04-2008, 06:14 AM

I just bought a used Telemaster 70 and after installing receiver and doing what needed to be done, I was just wondering how you would figure out the C of G to balance it. I read somewhere that it should be 1/3 of the chord which would make it 4 inches from the LE. Any thoughts or suggestions. Also would anyone be able to suggest some numbers to start with for the throws on the control surfaces.

Thanks

**Frank Klenk** · 05-04-2008, 09:15 AM

Here's how I figure it out. This gives you a good start point, no guessing. The other alternative of course is borrow a set of plans. Here's the link ...
http://www.gryffinaero.com/models/ff...c/findmac.html

astrofler · 05-04-2008, 10:15 AM

CG is generally 25 to 30 percent of the wing chord. on a constant chord wing such as the telemaster it is easily measured.

I'd set it at 25 percent to start and adjust to the feel I liked.

The telemaster is the all time best trainer design out there and about the only one with a flying stab. You'll love this airplane.

saf47 · 05-06-2008, 03:50 PM

Thanks for the tips. Got it all set up and took it up for a spin today, flys like a charm and sounds so nice with the OS 48 FS.
Thanks again

05-04-2008, 06:14 AM	#1
saf47 RCC Noob Join Date: Nov 2006 Location: Cambridge Feedback: 0 / 0% Posts: 9 Total Props: 0	How to Determine Cof G Remove this ad - become a site supporter! I just bought a used Telemaster 70 and after installing receiver and doing what needed to be done, I was just wondering how you would figure out the C of G to balance it. I read somewhere that it should be 1/3 of the chord which would make it 4 inches from the LE. Any thoughts or suggestions. Also would anyone be able to suggest some numbers to start with for the throws on the control surfaces. Thanks
	.

05-04-2008, 09:15 AM	#2
Frank Klenk Level 3 Supporter ★ Site Supporter ★ I am: Frank Klenk Join Date: Nov 2002 Location: Sunny Tillsonburg, Ontario (banana belt) Radio of choice: Futaba 18MZ # of RCs: 3 Feedback: 140 / 100% Posts: 6,347 Total Props: 49	Re: How to Determine Cof G Here's how I figure it out. This gives you a good start point, no guessing. The other alternative of course is borrow a set of plans. Here's the link ... http://www.gryffinaero.com/models/ff...c/findmac.html __________________ Frank Klenk MAAC 32001L IMAC 3698 MECA 4762 Thank a farmer My Website, https://frankshangar.com/ My YouTube channels, https://www.youtube.com/channel/UC7m...ZDhGp4w/videos https://www.youtube.com/channel/UC-k...8MphsMZuVfwqJw
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05-04-2008, 10:15 AM	#3
astrofler RCC Senior Contributor I am: Al E Join Date: Jul 2007 Location: Miford, Nova Scotia Feedback: 7 / 100% Posts: 693 Total Props: 3	Re: How to Determine Cof G CG is generally 25 to 30 percent of the wing chord. on a constant chord wing such as the telemaster it is easily measured. I'd set it at 25 percent to start and adjust to the feel I liked. The telemaster is the all time best trainer design out there and about the only one with a flying stab. You'll love this airplane. __________________ cheers Papa Sharptooth Bouncing about the living room, my then three year old grandson declared himself "a kangaroo". "If you're a Kangaroo, what is Grampie", I ask. His reply: "you a dinosaur"
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05-06-2008, 03:50 PM	#4
saf47 RCC Noob Join Date: Nov 2006 Location: Cambridge Feedback: 0 / 0% Posts: 9 Total Props: 0	Re: How to Determine Cof G Thanks for the tips. Got it all set up and took it up for a spin today, flys like a charm and sounds so nice with the OS 48 FS. Thanks again
	.

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