Estes 1376 NASA Pegasus Cg question

[Charles_McG]

Does anyone have an original scale model they could measure the dry center of gravity on, please?

I've found notes on the Cp - but not the Cg.

I've lost my original, and am trying to balance my upscale to match.

 

[EXPjawa]

I built a one-size up upscale (BT60). If it helps at all, I can measure CG on that and you can scale it as required.

 

[Charles_McG]

Sure. I built one downscale at BT20. We can compare.

 

[chrisudy]

I added a baffle to my BT-55 so it won’t be much help. I can check on any of the others - they’ve all flown nicely...

 

[Charles_McG]

Nice collection!

My mini and my mega balance about half a caliber behind the leading edge of the side tubes. With a motor. Just in front of the tubes without motor.

 

[chrisudy]

Nice collection!

My mini and my mega balance about half a caliber behind the leading edge of the side tubes. With a motor. Just in front of the tubes without motor.

That’s where mine typically balance as well.

Chris.

 

[EXPjawa]

Mine balances .75 caliber ahead of the side tubes without a motor (or motor retainer ring - I used an Estes 24mm plastic retainer).

 

[Charles_McG]

Mine balances .75 caliber ahead of the side tubes without a motor (or motor retainer ring - I used an Estes 24mm plastic retainer).

Thanks.

My Mega (38mm mount built from Mega Der Red Max and Leviathan kits) had its first flight Saturday. Beautiful, stright flight.

Now, to get some decals.