I have been working on a scratch-build plan called TUFFY. This model has a Pusher Prop design and a glider like profile, which makes it a great electric plane for beginners like me (especially those who are prone to crashes :) ) . So, I thought, I will share some specs, pictures, links to the original designer's plans, etc, etc...
My Tuffy's specs:
Wing Span: 41''
Chord length: 7"
Dihedral: 1.5" (each side or total 3")
Radio Set-up: 3ch (motor, rudder, elevator)
Material: High-density thermocole, fevicol, tape, wooden skeewers, toy-car wheels, etc
Model Weight: 225 gms
Estimated AUW: 550 gms (using brushed motor & NiHm batteries)
The original plans were developed by people at www.rcgroups.com/forums/showthread.php?t=1000670 . I think, someone on our forum has also created a similar (but smaller in size) model. The plan and pictures are attached. Comments and suggestions are welcome.
These are pictures of the model's progress till its' initial glide test.
Great Sethji! I have been trying to make my own TUFFY using the salvaged wing (under-chambered) from the Chinese plane
I hope the fuse extending from the TE till the tail is heavily reinforced under the foam.
How much angle you put on the motor ? (-)3-(-)3 ??
sir how did you give the wing an aerofoil shape...this the only thing in foam scratch building that i have noot been able to understand....someone please help meee...... :help: :help: :help: :help: :banghead: :banghead: :banghead: :banghead: :banghead: :banghead:
Akky,
What Sethji has done is used what is called KFM2 aerofoil. Search RCgroups or even this forum and you would know.
I am salvaging a wing from cheap Chinese plane which has under chambered wing formed using injection molding (industrial method). How ever for my Blue Baby , I indeed made an under chambered wing by 'Heat Forming' method (on depron). search net and you would know. That was a heck of clumsy method.
very well done {:)} {:)} {:)}
Just one thing to know- From where do you get those thermocol (high density) sheet ??? ???
Are they available in local market?
@ chanduvcrc, I got the thermocol from a shop that sells insulation supplies (AC, refrigration, heating, etc)... For those in Kolkata, these shops are located in Lal-Bazar and Gariahat areas.
@Ujjwaana, I have reinforced the fuse extending from the TE till the tail with a light-weight wooden stick (as I did not have any CF rods)... I is pretty sturdy.
Well done Ritesh bhaiya. The model looks awesome. So, why dont u plan to fly this at the maidan, even i can join u with my plane.
@Rohit, I could not maiden this. I left Kolkata, by the time I finished building this. Nonetheless, my parents have stored it, and I will fly this, when I return next year.
Built and flown a slow-stick recently. But, I have migrated to Ultra Micros (because of the cold weather here). Will post pictures soon. :)