Lumenier RB2205C-12 2400KV SKITZO Ceramic Bearing Motor
Thread Tools
This thread is privately moderated by orange&white, who may elect to delete unwanted replies.
Old Jan 13, 2013, 07:06 PM
mav913 is offline
Find More Posts by mav913
GLMS
mav913's Avatar
Quote:
Originally Posted by Old_Pilot View Post
pmackenzie.......

right....I'm referring to the Jetco Thermic C.....I downloaded the plans earlier
and discovered that there were no airfoil or printwood plans.....but that's OK..
I'll pick an airfoil, put it in cad, and proportion it to fit the taper and profile of the wing. I'll upload them if anyone is interested.

Thanks

O_P
I would greatly appreciate the upload kind Sir.

Thanks John
Sign up now
to remove ads between posts
Old Jan 13, 2013, 08:11 PM
buzzard bait is online now
Find More Posts by buzzard bait
Registered User
I built the kit in about 1962 and the airfoil was no more than the arc of a circle with trailing edge stock for both leading and trailing edges. Seriously, the high point was half way back. Even as a boy it looked crude to me.

On the other hand, in such a small scale a shallow arc isn't a bad choice.

Jim
Old Jan 13, 2013, 09:57 PM
Old_Pilot is offline
Find More Posts by Old_Pilot
Ad eos qui nesciunt crepitus
Old_Pilot's Avatar

Thermic C airfoils and dimensions


As requested....airfoil is base on the proportions of a Square Soar airfoil
adjusted to fit the LE and TE of the Thermic (3/16x1/2)
RCG Plus Member
Latest blog entry: 32" combat
Old Jan 13, 2013, 11:03 PM
mav913 is offline
Find More Posts by mav913
GLMS
mav913's Avatar
Thank you very much Sir.

John
Old Jan 14, 2013, 01:56 AM
lincoln is offline
Find More Posts by lincoln
Registered User

Models on the Fly, or is that Fly on the Model?


For a bit of comic relief, here are plans and an article on fly powered planes. Inspired by shenanigans at the 1939 Nats, according to the text. Includes shocking accusation against Korda!?! ;-) Plans shown are 3 to 5 inches, text mentions 2 1/2 inches. (Depends on size of fly.) It appears this set of plans may actually have been used, because there is tracing and cutting on the leading edge of plan 2.
Old Jan 14, 2013, 08:27 AM
mav913 is offline
Find More Posts by mav913
GLMS
mav913's Avatar
Now if we could only get a brick on it........

LOL

John
Old Jan 14, 2013, 08:44 AM
keeferm is offline
Find More Posts by keeferm
Registered User
Quote:
Originally Posted by Old_Pilot View Post
As requested....airfoil is base on the proportions of a Square Soar airfoil
adjusted to fit the LE and TE of the Thermic (3/16x1/2)

Nicely done, Old_Pilot!
Old Jan 14, 2013, 11:48 AM
California Condor is offline
Find More Posts by California Condor
Old Timer
California Condor's Avatar
I built many of those fly powered models back on the ranch after I received that issue of MAN. My mother thought it was cruel to the flies! I found the small model could be controlled by the fly, ending up on a window every time. Also the smaller flies seemed to have a better "power to weight" ratio.
Old Jan 14, 2013, 11:56 AM
Old_Pilot is offline
Find More Posts by Old_Pilot
Ad eos qui nesciunt crepitus
Old_Pilot's Avatar

Fly Power


Now tell me you buuilt a multi-engine version too......LOL
RCG Plus Member
Latest blog entry: 32" combat
Old Jan 14, 2013, 12:37 PM
bocsiz is offline
Find More Posts by bocsiz
Registered User
"For a bit of comic relief"
Absolute first idea!!! LOL
Old Jan 14, 2013, 12:50 PM
1967250s is offline
Find More Posts by 1967250s
Registered User
1967250s's Avatar
Quote:
Originally Posted by lincoln View Post
For a bit of comic relief, here are plans and an article on fly powered planes. Inspired by shenanigans at the 1939 Nats, according to the text. Includes shocking accusation against Korda!?! ;-) Plans shown are 3 to 5 inches, text mentions 2 1/2 inches. (Depends on size of fly.) It appears this set of plans may actually have been used, because there is tracing and cutting on the leading edge of plan 2.
I recall an article in Model Builder, too. So many years ago, probably in the seventies????/
Old Jan 14, 2013, 02:28 PM
Ka-6BR is offline
Find More Posts by Ka-6BR
Registered User
Quote:
Originally Posted by Old_Pilot View Post
pmackenzie.......

right....I'm referring to the Jetco Thermic C.....I downloaded the plans earlier
and discovered that there were no airfoil or printwood plans.....but that's OK..
I'll pick an airfoil, put it in cad, and proportion it to fit the taper and profile of the wing. I'll upload them if anyone is interested.

Thanks

O_P
Try this one. Not much of an airfoil, but this is what Jasco gave you for ribs.
Old Jan 14, 2013, 04:35 PM
Old_Pilot is offline
Find More Posts by Old_Pilot
Ad eos qui nesciunt crepitus
Old_Pilot's Avatar

Jasco vs Jetco Thermic C


I looked at the Jasco C wing and tried to figure out how to adapt the airfoil to the
Jetco C leading edges and taper, and just couldn't come up with a good way. The Jetco C airfoil has a flat bottom and squared ends for the LE and TE. Also, the Jetco wing tapers from the root airfoil all the way to the wingtip.....The Jasco wing has parallel LE and TE with elliptical tips. The Jetco tip is "square".

So I ended up with a basic 1/3-2/3 foil.

But thanks for trying to help. I know I need all that I can get !

Calm winds

O_P
RCG Plus Member
Latest blog entry: 32" combat
Old Jan 14, 2013, 09:02 PM
packardpursuit is online now
Find More Posts by packardpursuit
Registered User
I would think that a simple full size center rib template rotated downward (pivot point at upper rear of LE stock) to ever shorter rib locations, would automatically taper themselves as long as the top camber determined rib length where it met front of trailing edge stock. Add constant TE thinkness there it cr, cut a new bottom straight line. Sounds more complex than it is. MANY tapered wings have been using this method or variation of it.
I like the Thermic C's. Both of them, but for crying out loud, it ain't exactly rocket science, is it?
Old Jan 14, 2013, 09:25 PM
lincoln is offline
Find More Posts by lincoln
Registered User
Something here about airfoils meant for that technique:
http://www.hippocketaeronautics.com/...p?image_id=250


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion Best source for Vintage/Old Timer plans? river-studio Vintage & Old-Timer Designs 22 Sep 18, 2016 03:22 PM
Gallery Vintage & Old-Timer Plans built gallery orange&white Vintage & Old-Timer Designs 494 Nov 22, 2015 11:48 PM
For Sale Old timer Sal Taibi plans Biper/Piper Aircraft - Fuel - Airplanes (FS/W) 2 Aug 15, 2011 10:30 AM