Hi Guys,

I am finished assembling my Sig SE ARF, except for installing the engine (OS .46 FX). It looks like I will not be able to get it to balance at the recommended c.g. of 3.5" back fro leading edge by moving the engine. It will probably balance at 4" back or more.

I plan to drill the engine holes to get a c.g. greater than 3.5', and add spinner weights to the nose. Then, when I get more comfortable with the model, I'll take the nose weights off.

What is a good c.g. for the SE after getting used to it. I have read several posts that the recommended c.g. is mild.


Thanks,

Carl

I'm flying my SE ARF with a TT 46 heli engine and a standard OS muffler and it balances fine at the recommended CG. I shoved the barttery as far forward as possible under the fuel tank. I didn't find the need to add any sort of nose weight on mine.

Performance on the recommended CG is perfect. No bad tendencies what-so-ever.

(I have a pic or two of it in my gallery here on RCU)

hth

Jeff

Hi Carl,

My first SE I started with the CG as recommended (3.5"). I eventually moved it back to 4" and then to about 4.25-4.5. If I hadn't sold the plane (after about 130 flights on it), I would have played around with adding small amounts of weight to the tail until I got it perfectly balanced for extreme activity!

I am about an hour away from having my second SE completed and I will start with the CG at 4'' back and go from there. I have my used but awesome Saito 72 ready to mount.

You will love this plane!
Jim

Hey Carl, Dittos that you'll LOVE this plane! If your battery is not fully forward, do that first. Lighter is better here! I have to agree with above posts, 3.5" is way conservative. If you are experienced with this type of plane, you'll be fine at 4". My newest (of 3) with a OS 50sx I didn't even check the CG (I know, bad), just moved the battery all the way rearward under the servos and flew it. Hovered 2 minutes into maiden! One thing I'll say: Every one of these planes fly exactly the same!

Thanks for the responses! I can't wait to fly this plane ... it's goinf to be a blast.

Carl

Hey Carl,

If you haven't replaced the tail wheel assembly that came with the ARF, you might think about installing a Sullivan tail Wheel bracket in place of the cheap one that came with the kit. The one supplied will eventually ruin the bottom of your rudder. I can send you a mod picture of how I did it if you like.

Jim