New!! 150cc Yak 54 QB

[Andy Thomas]

Are the wings built up or sheeted foam?

[Mark Dennis]

They are built up

[SMOKEY]

Mark
Did you get a chance to measure the cowl if a 210 will fit?

Smokey

[thewrap]

	Quote: Originally Posted by dubd
	I like the plane, just not the color scheme.

Yeah same here. We see it everywhere. It makes it look like a pattern plane.

[bodywerks]

	Quote: Originally Posted by ddlstang
	Do you think is possible to get the production weight under 38#. I have the 100cc extra and absolutely love the plane but it came in rt at 29#. plane fly's great but in certain areas you can feel the weight. are the wings built up or foam? same construction method as on the 42% extra? looks really good - all you need now is a 540 ( hint hint )

You had to work pretty hard to get the 100cc to 29 pounds. You get 29 pounds by not trying at all to keep it light. Lightly equipped, DA powered 100cc Extras are coming in at around 27 pounds, easy. My BME-powered one was 25.5 pounds. Cans, big batteries, powerboxes, pilot figures, etc. were not considered when obtaining the bottom-line weight.
I can tell you that there is likely no way to get an ARF plane this big in at under 38 pounds unless dedicated weight-saving techniques are used.
It is most definitely going to take:
single 8711 or 9156 servos per elevator half
two of the same on the rudder instead of three
dual servos per aileron (looks like that is already how it's set up)
lightweight batteries - meaning not nimh's and not 5200 li-ions. More like dual 2100 lipos or dual 2300 A123's on Rx and a 1400-1650 4-cell nimh on the ignition.
stock mufflers
CF or no spinner at all
no pilot figure
a few lightening holes here and there

Following that, I bet you can get in the 38 pound range...

[ddlstang]

Bodywerks: yeah I did not go and try to save a lot of weight but nothing extravegant either. The plane has all factory hardware except titanium links, all 5955tg's ( 2 on rudder ) w/fromeco batts( 2-4800 , 1-2400 ), smart-fly regulator & power expander, carbon prop, fiberglass spinner and pilot, DA 100 w/stock muffs - no smoke. doesn't need all that batt but they can go into a 40% later.

I understand its hard to keep production weights consistent as balsa grades vary constantly and balsa weight can vary with humidity also ( humid here in OK ).

I'm, sure I could kill a pound or so by going all carbon on tubes and gear.

[BVM>Bandit>Kid]

	Quote: Originally Posted by Extra260
	I dont think jet cat makes a turbo prop for 40% planes. And why this plane???

Oh ok i see,i forgot it was a 150CC not a 100CC.

[crazyjoe]

I fly a 37.5 % yak factory hardware manual says 38 to 40 pounds so I'm guessing 40 pounds.I fly at 7200 ft and this thing defies gravity hovers no problem DA 150 std muff. So i wouldn't sweat over 2 pounds. If it lives up to the standard of the 260 you will love it

[sprice50]

Congrats to Rocco on another great aircraft.

I'd really like to see this in the same scheme as the 75cc Extra with the red/black/white and checkers. That would be hot!

I also agree that an Edge 540T and Cap232 would be great next!

[lomcevac]

I can't wait until the're available... Have an engine sitting here ready to go, and a spot cleared out in the trailer. This will be my first 40% and I had a question about the batteries. I noticed that someone posted about using dual 2300 A123's on the Rx. Do you guys think that's enough? I've been flying my 35% Edge for four years on dual 1450 mah Nimh batteries with no trouble. I was planning to stay with dual 2500 mah 6v Radical RC packs. Just a little shy to the A123's as of now.

[sprice50]

	Quote: Originally Posted by lomcevac
	I can't wait until the're available... Have an engine sitting here ready to go, and a spot cleared out in the trailer. This will be my first 40% and I had a question about the batteries. I noticed that someone posted about using dual 2300 A123's on the Rx. Do you guys think that's enough? I've been flying my 35% Edge for four years on dual 1450 mah Nimh batteries with no trouble. I was planning to stay with dual 2500 mah 6v Radical RC packs. Just a little shy to the A123's as of now.

You'll need to run a power expander for sure. The A123s seem pretty solid. You could always go with dual 5 cell Elite 3600mah NiMh packs. NoBS makes the best packs and they are a great price to. http://hangtimes.com/giantrxpacks.html
That's how I would set it up.

[sprice50]

Rocco,

Any chance of a new scheme in the near future? Something cleaner along the lines of the new 260 scheme or your python scheme?