EDFCrazy

Thanks for the advise Mark, ive attaced a pic showing the gap. what do you think. I have tried to measure that gap between the tail cone and the start of the pipe ignoring the bell mouth and it looks like it could be around 40mm. is that to far? im also worried if i stick to close it might make the smaller sized pipe run too hot?

3dean

my gap is 25mm not including the bell mouth, running a 220 beast, its the large pipe though

EDFCrazy

thanks it must almost look like you are putting the turbine right inside the pipe. could you post a few pics of yours for me?

3dean

yes it does look right inside but it is per behotec spec and works great, quiet too

smchale

My Feedback: (67)

Simon, congrats on the new jet!
i agree it needs to go back a bit. If you take the point where the taper in the bellmouth starts and the point where it ends, and split the distance between the two points, that is where the end of the exhaust cone should be. Yours appears to be right where the taper starts.

smchale

My Feedback: (67)

Simon, check this out, should help:

http://www.grumania.com/index.php?op...mid=11&lang=en

EDFCrazy

Sean, i think you are right, mine seems to be at the start of the taper. 10mm back should be close to that center point.

Thanks

smchale

My Feedback: (67)

Can't hurt to try it. Plus it's a lot easier than trying to adjust the location of an EDF.

Lil Chief

My Feedback: (3)

Hey guys, just now getting mine days away from maiden flight but wondering where you guys set the CG? Thanks!

Thruster

There is another thread on the Aurora http://www.rcuniverse.com/forum/rc-j...announced.html and post #283 has CoG

mine finally sat at 230mm - safe start would be 250mm

EDFCrazy

My CG is currently at the front of the wheel wells. Im probably going to move it slightly further back.

my throws are
20mm aileron
25mm elev
max rudder
80deg flap

I needed a few mm of down elevator with flaps.

EDFCrazy

Video footage from my forth flight, powered by the new Kingtech 210G.


https://www.youtube.com/watch?v=g2Wg...M&noredirect=1

https://www.youtube.com/watch?v=g2Wgs8atiEM&noredirect=1

EDFCrazy

Some more footage

https://www.youtube.com/watch?v=5-ecXBEiiCk

ModellbauUK

Simon. We've also found that the whistle can be eliminated by dremelling out the inside scoop of the air intake to provide a better curved glow of air through the intake. We'll have our carbon aurora at classic jets on Friday. Jamie has it at the moment and I'll take some pictures for you

Regarding the pipe size, 180 size was mentioned in our correspondence, was not aware you intended up fit a 210 turbine. At the time of your purchase this size of turbine was reserved for the carbon but has since been proven to be fine for the GRP model

Ian

ModellbauUK

Hi Simon

Nice flight. You'll find as you explore the flight envelope you'll be further amazed at how slow & fast the model can fly. At Jetpower a Grumania thrust vector pipe was fitted to the carbon Aurora, quite amazing to see. Hopefully video will appear of the flight soon from Friday. Was hoping to get a video on Sunday but the flying was rained off. Shame the slow flying characteristics were not demonstrated at Jetpower 2014 as it didn't really stand out amongst all the other ballistic sports jets that dominated the show. Here's Jamie's demo of the slow flying capabilities. I'm sure you've seen it before but thought it would good for your thread and for others to see just how slow the model can fly

http://youtu.be/k5sdlvx0iPE

Ian

Speedf16

My Feedback: (16)

1. What size fuel tank n manufacture ?
2. Landing gear size n manicure ?
Thanks

cmjets

Hello friends:

here you have, the Tank for Aurora !
8L kero + 2.7L smoke.
I hope you like.

regards from Spain.
Carlos.
_______________________
www.cmjets.blogspot.com

3dean

Fct

EDFCrazy

Hi, the fuel tank i used (shown in my first post) is the optional tank that is supplied with the kit. it is 4.5L in capacity and is enough fuel for me. My Aurora is around 16kg dry, 20kg wet and have 1:1 power to weight ratio with the Kingtech 210G.

schroedm

My Feedback: (1)

10.7Ltrs total? Wow. I'd say too big - even for the 210/220 class turbines. That's about 9kg of fuel/smoke fluid at take off!

6L fuel and 2L smoke just about spot on in my opinion.

cmjets

I can make this tank with less capacity, 6L or less and same smoke, 2.7L or without smoke, like you want.
Carlos.

schroedm

My Feedback: (1)

Carlos, good news you can make any size.

I used FCT's 6+2L setup...

cmjets

Yes, of course, the size that you want, keeping the measures of the floor, 24x20,5cm. The hight is variable.

Carlos.
CMJETS Tanks
_____________________
www.cmjets.blogspot.com

cmjets

Hi again, the tank is installed, I hope you like.
BR.
Carlos.

Speedf16

My Feedback: (16)

Thanks for your update,nice jet , looking foward on getting mine up in the air ,also a good video on the introduction.
safe flying , ...Tampa ,Florida ..