COULD ANYONE PLEASE TELL ME WHAT THE CG MEASUREMENT OF A HOBBY-LOBBY TELEMASTER 95" SPAN IS IF THEY KNOW AND WHAT IT IS. THANK YOU VERY MUCH

Measure the wing chord. Multiply that by 0.25 and 0.3.

These two measurements would be a good CG Range to start with.

Example: Chord = 12", dimension #1 is 3", dimension #2 is 3.6"

A good starting point in this example would be somewhere between these two points

Your wing chord is probably different so you have to do the math yourself.

Then dimensions pettit gave you are the distance back from the wing leading edge (LE) to the CG as measured at the wing root (where the wing touches the fuselage).

To further simplify, balance that particular plane on the main spar.

all planes balance at one third back from the leading edge. measure the width of the wing at the fuesalge and take one third of that. there your balance point.

Not all planes balance best at 33%. A trainer is usually better off closer to 25%. Once the pilot advances, the CG can be gradually moved back to 33% if so desired.

The further back you balance the plane, the more sensitive the elevator will be. Going from 25% to 33% is kind of like flipping on high rates on your elevator... sort of.

G'day Mate, I have a senior Telemaster &I just checked the plans & the balance point is located at the centre of the main spar. What motor do you have in it, I have an old OS 61 FSR ABC. from the early 80s running a 12x6 prop, beautiful to fly, be aware a bit more down thrust is a good idea if your area has a wind problem. It helps the plane to penetrate in a good breeze.
Good Flyin Mate.
Allan.

Does this apply to tapered and swept wings? I don't think so, but am not sure. If not, how do you calculate for tapered wings?

Thanks.

I don't think it applies, period. It's too general, and entirely untrue for some wings. My Lt-40 balances at 1/4 back. My Skybolt balances at 50% or so back from the LE of the top wing, which is also at the LE of the bottom wing. I do have some low wing sport plances that balance at the 1/3 mark or so back from the LE.

Well ... it is true ... kinda. Any plane can be made to ballance at 1/3 back ... but not all of them are meant to...
I have a spreadsheet called [link=http://home.alltel.net/semidomestic/design.xls]design.xls[/link] I didn't create it, but it does work. If you use excell, it'll have to be reformatted. I got it to run fine with Corel Quattro
another option is [link=http://sky.prohosting.com/air2/cg_calc.htm]here[/link].

Thanks broke!