HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Mar 01, 2004, 05:12 AM
Be afraid!
Cuddles's Avatar
Milano
Joined Dec 2003
458 Posts
Scratch built and maiden flight

Hi all
I would like to share my latest effort in electric sailplanes.
First of all Ill give you some specs:
wingspan 98 cm
length 57cm
weight 172g with e-tech 2s1p
motor sp 280 sport
Propeller 12 cm/ 5; Propeller pitch 6 cm/ 2.5; Spinner 25 mm; For shaft 2 mm
Teltech Eric HLG had inspired me for wing planform and structure.
Fuse is pod and boom with pod made of 3mm balsa and thin fibreglass .
Boom is a piece of carbon fishing pole.
Internals are: Jeti 050 speed controller,graupner xp8 rx, C1041 servos.
Cuddles is offline Find More Posts by Cuddles
Reply With Quote
Sign up now
to remove ads between posts
Old Mar 01, 2004, 06:21 AM
Be afraid!
Cuddles's Avatar
Milano
Joined Dec 2003
458 Posts
The glider on the left is a scratchbuilt MHLG based on HL1 japanese sailplane.
A special feature of my electric assisted sailplane is folding prop system wich stops the prop windmilling when you stop the motor.
An odontological rubber band is passed in the grooves cutted in the back of the hub.
A ply plate is glued on the bottom of the hub with two little slices of cork glued at the ends.
A 200 glasspaper washer is then glued on the top side of a speed 280.
The cork will interact (friction) with the glasspaper whenthe prop will stop to push due to the play of the motor.
It works like a charm!
Cuddles is offline Find More Posts by Cuddles
Reply With Quote
Old Mar 01, 2004, 07:12 AM
Be afraid!
Cuddles's Avatar
Milano
Joined Dec 2003
458 Posts
Forgot scheme!
Cuddles is offline Find More Posts by Cuddles
Reply With Quote
Old Mar 01, 2004, 07:57 AM
Be afraid!
Cuddles's Avatar
Milano
Joined Dec 2003
458 Posts
Off she goes!
Cuddles is offline Find More Posts by Cuddles
Reply With Quote
Old Mar 01, 2004, 07:58 AM
Be afraid!
Cuddles's Avatar
Milano
Joined Dec 2003
458 Posts
Flyby
Cuddles is offline Find More Posts by Cuddles
Reply With Quote
Old Mar 01, 2004, 08:12 AM
Registered User
Concord, MA
Joined Jun 2002
1,119 Posts
Is that Milano as in the place in Italy or the cookies by Pepperidge Farm?

I read with interest your folding prop assist system, since I also have a non-brake Esc and am tired of the blades windmilling around. So basically you have a friction substance that, when the motor is no longer pulling, the slop in the motor fore-and-aft lets the air flow push the back of the prop or spinner onto. Michaelangelo would be proud.
BEA flyer is offline Find More Posts by BEA flyer
Reply With Quote
Old Mar 01, 2004, 09:00 AM
Be afraid!
Cuddles's Avatar
Milano
Joined Dec 2003
458 Posts
Nope Sir, is Milano ,in northern Italy
Even i was tired of windmilling props on my plane.
One day ,in an indoor meeting, i met an old man with a sailplane featuring this system.He explained me all and i was really impressed His name is Roberto Varetto.He is really a genius!
Maybe tomorrow i'll post some photos of the system , but what do you think about the plane itself?
Best regards

Cuddles
Cuddles is offline Find More Posts by Cuddles
Reply With Quote
Old Mar 01, 2004, 09:05 AM
Registered User
anfarol's Avatar
Forli, Italy
Joined Dec 2001
242 Posts
Hello Cuddles,
I'm Italian too!
Very good and simple idea. Well done I think I'll use this method too.

Bye,
anfarol
anfarol is offline Find More Posts by anfarol
Reply With Quote
Old Mar 01, 2004, 09:33 AM
Be afraid!
Cuddles's Avatar
Milano
Joined Dec 2003
458 Posts
Thanx a lot Anfarol
I think this system must be applied to every e-sailplane,even if you have an ESC brake ,for backup
This morning i phoned to Mr Varetto to ask him if i could release his system: he was enticed
Best regards
cuddles
Cuddles is offline Find More Posts by Cuddles
Reply With Quote
Old Mar 01, 2004, 09:46 AM
Registered User
anfarol's Avatar
Forli, Italy
Joined Dec 2001
242 Posts
ehmmm...
Who is Mr Varetto?

Ciao!
anfarol is offline Find More Posts by anfarol
Reply With Quote
Old Mar 01, 2004, 09:54 AM
Be afraid!
Cuddles's Avatar
Milano
Joined Dec 2003
458 Posts
Anfarol
Read the post before yuor first post in this tread

Ciao
Cuddles is offline Find More Posts by Cuddles
Reply With Quote
Old Mar 01, 2004, 10:02 AM
Registered User
anfarol's Avatar
Forli, Italy
Joined Dec 2001
242 Posts
Ooppss... you post it while I was writing mine.... (5 minutes....)

Bye,
Anfarol
anfarol is offline Find More Posts by anfarol
Reply With Quote
Old Mar 01, 2004, 10:12 AM
Registered User
Concord, MA
Joined Jun 2002
1,119 Posts
what I think of the plane

nice planform- this is the shape of the wings and tail. Polyhedral makes it easier to turn too. I don't have a mixer so no v tail for me. There is a guy over here who is a big low-speed aerodynamics expert. his name is dr. Drela. look for his airfoils on the net
BEA flyer is offline Find More Posts by BEA flyer
Reply With Quote
Old Mar 02, 2004, 04:51 AM
Be afraid!
Cuddles's Avatar
Milano
Joined Dec 2003
458 Posts
Hi all
I've build this e-sailplane to bring it with me when i go around in motorbike.The wing can be dismantled in three pieces so the whole plane can fit with tx in a backpack
A ride should be much more interesting then
Best regards
Cuddles
Cuddles is offline Find More Posts by Cuddles
Reply With Quote
Old Mar 02, 2004, 10:27 AM
Registered User
Novara, Italy
Joined Mar 2004
3 Posts
Hi Cuddles, nice sailplane!
Do you have some plans to share?
(oh, I forgot, I'm Italian too!)
darioC is offline Find More Posts by darioC
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Video Long EZE - Velociraptor Canard Scratch-built maiden video Steven Wong Electric Plane Talk 10 Jul 11, 2007 01:11 PM
Discussion Adrian Page's NewBee Scratch built maiden flight bobf Electric Plane Talk 2 Jul 17, 2006 11:00 AM
Video Maiden video - Scratch built FW-190 ExtremeSkyes Electric Plane Talk 8 Jun 11, 2006 03:58 PM
Minor crash during the maiden of my second scratch-built balsa plane, the Tail Dancer Hogster Crash Discussion 3 Sep 05, 2004 03:10 PM
Yippee! Scratch built plank plane test flight and pic Vinnya42 Slope 9 Jun 12, 2003 01:14 AM