J'Tec 35% Extra Build

[Neil4]

You have to disconnect the elevator linkage to take the stabs off???

[columbo]

Yes, I disconnect the ball link from the servo arm. To fit in my 4-runner, I only need to remove 1 stab.

[columbo]

Finally flew the extra a few days ago. The plane flies great, though it was just a test flight, and I didn't get too radical. My c.g. is a little aft, so when I fly inverted no down elevator is needed. Once I add a spinner, the c.g. will be about right on. Anyway, even slightly aft the plane tracks really well. I can see how this will be a really good IMAC plane. Knife edge tucked to belly slightly and required some up elevator, but not much. I will mix this out when I fly again. The only 3D I tried was a harrier, and the plane was stable in this maneuver. The engine is still running a little rich with only about 1/2 gallon through it so far. The next few flights will be for trim purposes and to get the engine dialed in. After that, I will really see what she can do in the 3D arena and will post some video in about 2-3 weeks. Weather is hot here with temperatures in the low 100s and gusty sw winds. So as much as I want to fly, the heat and wind are prohibitive right now. The best I might be able to do is get a flight or two in an hour or so before sunset.

[zzw26n]

	Quote: Originally Posted by columbo
	The canopy was installed using amazing goop and red electrical tape for the trim which is almost a perfect match to the ultracoat on the plane. The canopy had to be cut before it was installed to the canopy hatch. I like goop better than canpoy glue because it takes only about 10 minutes to set and doesn't run...but another 24 hours to fully cure. It also dries clear.

I've done two Canopy's that way (goop & elec. tape) Looks great and has never failed me. Nice Job!

[columbo]

Yea, I was pleased at how well the red electrical tape matched. The electrical tape is very flexible and easy to work with.

[columbo]

Still getting her trimmed out, but I like the way this plane flies. Very stable in 3D and flies precision well also...but c.g. needs to be moved forward a tad. Engine needs to be cleaned up in mid range (just where I need it most for 3D).

[SleepyC]

Very nice!
Glad you like the plane.
JTEC makes some killer airframes.

[vatechguy3]

is the pipe tunnel long enough for re2s??

tony

[Jerry_Hailey]

I have 16 inch long cans in mine. How long are re2s?

[jtsails]

Tony,
the tunnel is not long enough for R2's but the back is open so it is very simple to extend it and make the necessary opening for the exit.
James

[Kevin Y]

	Quote: Originally Posted by jtsails
	Tony, the tunnel is not long enough for R2's but the back is open so it is very simple to extend it and make the necessary opening for the exit. James

James is correct, the pipe tunnel is open at the rear in case you choose to use different canisters or use tuned pipes. As he said it is very simple to finish off and setup tuned pipes. My last two 3.2m extras have had full length pipes in them and it is very simple to do.

Here is a shot of inside fuse and another of how we did our pipe tunnel

[JOSE S]

	Quote: Originally Posted by jtsails
	I felt like the plane was too marginal on power, it was enough but there was very little reserve. It ruled out the possibility of using a 3 blade prop, which I prefer for IMAC. Also, with the smaller props the downlines got very fast. I'm probably over critical of the downline speed but last year I flew a Yak and got used to it being very slow on them. The DA 85 has more power than my old model 80 and flies the plane better. Getting the cg right for IMAC was also a little tough, I had everything as far forward as possible and it still was a little tail heavy. I even had the batteries on the front end of the motor box! JT

Just asking I have a zdz 80 with pitts muffler . you think it will be marginal on power? and what was the overall weight on it ... just thinking of buying one of these .

[JOSE S]

got my hand one one of this for a 3w 100
already have al hinges glued and landind gear done tail wheel done and mounted elevator servos and rudder servos and fuel tank in the frame in one day . lets see if tomorrow i can get the wheel pants on and the rest of the electronics

[columbo]

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[Jerry_Hailey]

Columbo- So how is she flying? How about an update.