OldSchoolFlyer
This is my easy modification and installed a 70mm EDF in a T-50 I first made a outline of the EDF perimeter. Using the outline template I traced it on the plans in approx. the same position as the motor mount. Increase the fuselage rear height to 1 3/4" at the back for engine intake clearance. I also modified the elevator for the single engine exhaust and provide an outline of the EDF exhaust tube cut-out. (see plan photos) I cut out the entire plane per the plans with my outline modifications. I also made a fuselage baffle to seal off the back of the fuselage and create a air scoop on the bottom. (see photos of construction) After construction and install of the carbon reinforcing rod, I cut out the exhaust tube install location. I fashioned the exhaust tube from a light cardboard mailing envelope. I taped the tube together and make a slit to allow the tube to slide down over the carbon rod . The tube is slightly tapered. (0-5% for speed / 10-15% for performance) Keeping everything as light as possible and use elevevons with 2 servos.I will follow-up with flight evaluation as soon as weather permits. Comments and suggestion always welcome 1520634236798.jpg 1520634236798.jpg  1520634248410.jpg  1520634251812.jpg  1520634380700.jpg  1520634580108.jpg  1520634924399.jpg  IMG_20180319_130344.jpg  IMG_20180319_130419.jpg  IMG_20180319_130356.jpg  IMG_20180319_130403.jpg  IMG_20180319_130424.jpg  IMG_20180319_130414.jpg  IMG_20180319_130530.jpg 
Old School Flyer
Quote 9 0
OldSchoolFlyer
Hi Andy I just update the photos to a larger image. I have more photos and details I interested. Thanks
Old School Flyer
Quote 1 0
bogusbandit56
Quote:
This is my easy modification and installed a 70mm EDF in a T-50 I first made a outline of the EDF perimeter. Using the outline template I traced it on the plans in approx. the same position as the motor mount. Increase the fuselage rear height to 1 3/4" at the back for engine intake clearance. I also modified the elevator for the single engine exhaust and provide an outline of the EDF exhaust tube cut-out. (see plan photos) I cut out the entire plane per the plans with my outline modifications. I also made a fuselage baffle to seal off the back of the fuselage and create a air scoop on the bottom. (see photos of construction) After construction and install of the carbon reinforcing rod, I cut out the exhaust tube install location. I fashioned the exhaust tube from a light cardboard mailing envelope. I taped the tube together and make a slit to allow the tube to slide down over the carbon rod . The tube is slightly tapered. (0-5% for speed / 10-15% for performance) Keeping everything as light as possible and use elevevons with 2 servos.I will follow-up with flight evaluation as soon as weather permits. Comments and suggestion always welcome [ATTACH=full]54484[/ATTACH][ATTACH=full]54484[/ATTACH] [ATTACH=full]54485[/ATTACH] [ATTACH=full]54486[/ATTACH] [ATTACH=full]54487[/ATTACH] [ATTACH=full]54488[/ATTACH] [ATTACH=full]54489[/ATTACH] [ATTACH=full]54490[/ATTACH] [ATTACH=full]54491[/ATTACH] [ATTACH=full]54492[/ATTACH] [ATTACH=full]54493[/ATTACH] [ATTACH=full]54494[/ATTACH] [ATTACH=full]54495[/ATTACH] [ATTACH=full]54496[/ATTACH]

As an old school flyer, what are your thoughts on the construction and flights of these depron planes?.
I started with the old Keil Kraft rubber powered kits back in the early 80`s and I was 30 years behind everyone else then
I have still got a Keil Kraft Chief , Senator and an unbuilt Gypsy. I love the vintage stuff
Wot, no Depron?
Quote 3 0
OldSchoolFlyer
I go back to the 60's when I worked for Joe Bridi and built lots of balsa stuff. I spent a lot of time on the calif coast slope gliding too. I find these foam plane fun and very easy to modify and create a very realistic looking jet. I also think they can be easy to fly for a beginner if they take the time to ready and understand R/C systems and flying models. As for me I like realistic high speed aerobatics and realistic looks. These jets can do almost any maneuver and transition to slow flight, and if you stuff one in no big loss.
Old School Flyer
Quote 3 0
bogusbandit56
This beauty will bring back memories then I found this image on the web. It`s not mine
Wot, no Depron?
Quote 2 0
Wildthing
Quote:
I go back to the 60's when I worked for Joe Bridi and built lots of balsa stuff. I spent a lot of time on the calif coast slope gliding too. I find these foam plane fun and very easy to modify and create a very realistic looking jet. I also think they can be easy to fly for a beginner if they take the time to ready and understand R/C systems and flying models. As for me I like realistic high speed aerobatics and realistic looks. These jets can do almost any maneuver and transition to slow flight, and if you stuff one in no big loss.

That's what I love about these foamies, I can't imagine spending hundreds of dollars and drilling them into pieces. It's still a shame crashing these but no tears are shed.

Ian, you might have to dig out your vintage kits.
Quote 0 0
OldSchoolFlyer
love the picture of the old dirty birdy by Bridi. ?? maybe I made the kit for this pattern ship thanks
Old School Flyer
Quote 0 0
quorneng
If you are an "old time builder" Depron is a remarkable foam material, if you can get hold of it.
Like balsa it come in thin sheets so to build anything with a 3 dimensional form you are into cutting it up and gluing bits together (formers and a plank skin) to form a 'structure' in a very similar way to a conventional fully sheet balsa plane. Depron is only 1/10 the weight of medium balsa so is likely to need reinforcement in the high stress areas.

The scale 2.1 m Glasflugel Libelle in my Avatar (it had a small electric motor and folding prop in the nose) was 'built' almost entirely in Depron with hard balsa used only in the wing and tail plane spars.
Described in the past tense because I simply 'lost it' by flying in a thermal too high and far away!
Quote 1 0
F1wanabe
I did the V1 with a mid mount edf to utilize Thrust Vectoring. It was actually one of the better flying versions of the T50! How did you find it without Thrust vectoring, quorneng?
Quote 0 0