Looking for information - Gator Giles 202  
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Looking for information - Gator Giles 202 - 5/31/2007 7:10:07 PM   
yarom



Posts: 1186
Joined: 6/23/2005
From: Bellevue, WA, USA
Status: offline 		Hi,

Would anyone have any information regarding the CG location of the Gator RC Giles 202m - the wooden version?

I have had one for several years, very well built, and right now putting it together hoping to fly it a bit this summer.

Naturally, Gator does not exist anymore and inforamtion is quite hard to obtain on their old design.

I do know it is supposed to be a Giles like fuse with typhoon wings. Not more beyond that.


Thanks.

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       Post #: 1

RE: Looking for information - Gator Giles 202 - 5/31/2007 8:13:24 PM   
RFJ



Posts: 491
Joined: 4/20/2005
From: Belfast, IRELAND
Status: offline 		Well, the balance point shown on the Typhoon plan is 6.75" back from the leading edge at the wing panel root where it plugs into the fuselage. This coincides with the wing tube/socket position.

Ray

(in reply to yarom)
       Post #: 2

RE: Looking for information - Gator Giles 202 - 5/31/2007 8:18:50 PM   
yarom



Posts: 1186
Joined: 6/23/2005
From: Bellevue, WA, USA
Status: offline 		Thanks. I'll try that as a starter.

(in reply to RFJ)
       Post #: 3

RE: Looking for information - Gator Giles 202 - 5/31/2007 8:45:27 PM   
yarom



Posts: 1186
Joined: 6/23/2005
From: Bellevue, WA, USA
Status: offline
I tried it and I seem to balance way behind, about 2" worth, about where the tube is located.

This is without battery, but i would have to add a full pound to get it on 6.75".

So I am OK for wingtube as a CG location but it is at around 8" - it is also at 40% between the LE and the TE.

I'm sure someone on RCU has this plane and might be able to provide the exact value.

Thanks.

(in reply to RFJ)
       Post #: 4

RE: Looking for information - Gator Giles 202 - 5/31/2007 9:24:33 PM   
RFJ



Posts: 491
Joined: 4/20/2005
From: Belfast, IRELAND
Status: offline 		yarom,

The Typhoon has a wing root chord of 16.75" so the balance point at 6.75" from the leading edge is at 40% of this.

The Giles obviously has a bigger wing so your 8" (40%) point is probably correct.

Ray

(in reply to yarom)
       Post #: 5

RE: Looking for information - Gator Giles 202 - 6/6/2007 12:05:03 PM   
gmair


 

Posts: 40
Joined: 7/19/2005
From: Guelph, ON, CANADA
Status: offline 		I recently purchased what I believe is a Gator RC Giles 202 from a local swapp meet. The fuselage is all composite and the wing and horizontal stab are sheeted foam. The WS is 78".
I'm having a difficult time determinding the CG. Anyone out there have any info on this airplane?
Thanks

(in reply to RFJ)
       Post #: 6

RE: Looking for information - Gator Giles 202 - 6/6/2007 3:10:48 PM   
yarom



Posts: 1186
Joined: 6/23/2005
From: Bellevue, WA, USA
Status: offline
I got indications on mine, which is the built-up version.

CG Is supposed to be on the front side of the wing tube.

(in reply to gmair)
       Post #: 7

RE: Looking for information - Gator Giles 202 - 6/6/2007 10:23:32 PM   
eabmex


 

Posts: 21
Joined: 9/29/2005
From: Guadalajara, MEXICO
Status: offline 		As you may know, the final CG location can only be determined after test flights and trimming and depends on the personal preferences of the pilot. Most pattern planes behave well at 35-40% CG location, so 35 or 37 will be a safe starting point. You will need to determine first the MAC (Mean Aerodinamical Chord) of the wing which is the chord located in the center of Area of the wing, on that chord you have to determine the CG that you want, NOT at the root Chord. Determining the MAC is very easy using a graphical technique, and it works for both single and double tapered wings. If you are interested in using this method please let me know and I can post the detailed instructions and a drawing on how to do it

(in reply to yarom)
       Post #: 8

RE: Looking for information - Gator Giles 202 - 6/6/2007 11:56:06 PM   
yarom



Posts: 1186
Joined: 6/23/2005
From: Bellevue, WA, USA
Status: offline
I was actually looking for the recommended manufacturer CG as a starting point.

In the past, calculating the CG based on the wing has not worked well for me in pattern planes as they have elongated tail sections and thus more moment.

Thanks.

(in reply to eabmex)
       Post #: 9

RE: Looking for information - Gator Giles 202 - 6/7/2007 1:12:42 AM   
GJAUBIN


 

Posts: 200
Joined: 12/6/2003
From: MERRIMACK, NH, USA
Status: offline 		Try this site. Worked well for me on a CMP Giles 202.

http://www.palosrc.com/instructors/cg.htm

(in reply to yarom)
       Post #: 10

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