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        Build Log F86 Sabre with JetCat P20SX

#1 grapo Nov 30, 2012 02:22 PM

F86 Sabre with JetCat P20SX
 
3 Attachment(s)
Hello,

I start build F86. Based on foam F86 from HobbyLobby - wingspan 1400mm

#2 henke Nov 30, 2012 02:52 PM

A P20 will fly this bird just fine, but I would absolutely mount the turbine much closer to the CG and und a thrust tube from grumania. Installed in the right way a thrust tube might even increase the thrust (amir@hab.se sells test and tune benches for P20SX) In that way you will save 1lb+ on the AUW and keep the thrust :-)

I know me and a friend have been flying these kind of planes with turbine power for a while :-)

http://skillingaryd.nu/files/2012/08/flymeet7B.jpg

#3 grapo Dec 01, 2012 10:12 AM

This plane is from foam and build in the exhaust and turbine in CG - very danger for heat :-(

In this case I do like this - the weight of the turbine is cca 300g and I put only the batery forward and that will be fine for right CG.

Today I started my turbine first time - SUPER all was work well

#4 henke Dec 01, 2012 12:33 PM

Quote:

Originally Posted by grapo (Post 23411816)
This plane is from foam and build in the exhaust and turbine in CG - very danger for heat :-(

In this case I do like this - the weight of the turbine is cca 300g and I put only the batery forward and that will be fine for right CG.

Today I started my turbine first time - SUPER all was work well

P20 Weights 372grams. It's no problem with the heat inside the fuselage. A turbine is not very hot, only the exhausts are :-)

http://img15.imageshack.us/img15/556...1zed201206.jpg

http://img189.imageshack.us/img189/8...1zed201206.jpg

#5 grapo Dec 02, 2012 02:22 PM

Hello,

there is a link on first start turbine in plane:

http://www.youtube.com/user/GrapoAirTech

#6 grapo Dec 04, 2012 09:16 AM

1 Attachment(s)
The last check of fuselage before welding together

#7 grapo Dec 04, 2012 09:17 AM

2 Attachment(s)
complete plane and view on cocpit

#8 Arruda Dec 04, 2012 03:38 PM

Grapo, how did you insulate the turbine from the plane’s walls?

#9 grapo Dec 05, 2012 05:42 AM

2 Attachment(s)
Nothing special, the space between the turbine and wall of fuselage is enough for cooling. I add only the aluminium foil on exhaust part - during start there were little bit higher temperature - I have a 5 test runs of turbine and no problem

#10 grapo Dec 13, 2012 12:14 PM

4 Attachment(s)
Today I finished the marking and stencils on the plane. When will be right weather I start with taxiing :)

#11 grapo Dec 22, 2012 04:20 AM

Finally - maiden flight :

F86 Sabre - JetCat P20SX turbine - Flight (6 min 41 sec)


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