Roo
 

Can anyone till me the cg of my roo. thanks Tim j

Roo
 

half inch infront of the mains

roo
 

That seams to be to far ahead I thought it was 3 3/4 ahead of spare.

Roo
 

Are you talking about a Kangaroo, or a Rookie?

roo
 

kangaroo

Roo
 

yeah, I have a kangaroo. Its between a quarter inch and a half inch ahead.

Roo
 

Do you mean 1/2 in from center of manes.

Roo
 

yes, from the front of the strut

roo
 

Do you have led in the tale . I nead about 2 lb.Will this be ok. Thanks for help .

Roo
 

i have a little, i moved things around to keep the weight down. I didnt need that much weight at all

roo
 

I flu the plane with the cg about 1 1/2 ahead .It seamed to fly fine but on takeoffs it seamed to be hard to get it to rotate.

Roo
 

yeah, it shouldnt be at all, although i take off with full up elevator, but its never hard to rotate.

Roo
 

Kangaroo C.G. should be set at 9.5 - 10 cm (about 4#) front of the alu spar.

Chris

Roo
 

The plans call for 95-100 mm in front of the main spar. Both of my Roos balanced at the front screws on the main gear flange. Balance with your header tank full if you are using one and don't plan on getting into it. I had a Roo with a Ram 1000, and now one with a PST J600, and neither needed any weight.

roo
 

Thanks to every one for the help.When my roo was built the gear must have bean installed farther back.ALso do I balance with gear up? Tim

Roo
 

I put my ecu battery in the rear of the plane and didn't need any extra weight to achieve balance.
It's a big sub-C cell and is heavy.

CG
 

We balanced our Roo 2 inches forward of plans.. Dennis Lott told us to do that.. fly's great, it does away with the Roo-Hopping on landing.

Dan M.