Quaker Airfoil

[Tim Wolff]

Did the Paul Karnow Quaker use a flat-bottom airfoil? All the plans and pics I've seen of the various "flavors" of Quakers use a flat-bottom airfoil?? I thought these pre-war designs used undercambered profiles.

TIA

[GoldenAge]

My Quaker Flash has a Clark Y airfoil. I think the larger Flying Quaker is the same....
(I think). I'm getting ready to build one of those when I get the kit.

[Tim Wolff]

Thanks! I didn't expect a response that quick.

I got a biggun' 84" inch span M&P Quaker kit. Closer inspection of the plans state that it is S.A.M. legal. I was concerned that the airfoil had been modified from the org. design as all the old timers I've flown or seen use an undercambered airfoil. I'll post some pics building it..

[GoldenAge]

I got a biggun' 84" inch span M&P Quaker kit.

That's the one I'm going to build next! Mine is on order from Penn Valley Hobbies. I also have a Scorpion Major short kit on order from Bob Holman.
Whichever one arrives first, I'll start building :)

Good luck with the Quaker project! I did a build article on my Quaker flash in another forum (didn't know about this one). Looking forward to seeing the pics,

Scott

[Tim Wolff]

Do you have a link to your build thread handy? I'd really like to see.

[GoldenAge]

Do you have a link to your build thread handy? I'd really like to see.

Yes, I have a link on my webpage in the text below the picture.....

http://home.earthlink.net/~psjustis/Qflash.htm

I didn't have my digital camera in the beginning of the build, so the article starts after the fuse is already framed up.

Scott

[Tim Wolff]

Nice looking plane! Mine looks more like a winter procect everytime I unroll the plans for a look.

[GoldenAge]

Thanks! I have to wait until autumn when it cools off a little to start building. No air conditioning out in the shop.

Scott

[slowbuilder]

I am currently flying a Big Quaker (96") my father built for R/C in the late '70s and last flew in the mid-80's. He built it "traditionally" from scratch with wood glue and brads holding the fuse together. Faithfully following the 1930's plans for nostalgias sake. Covered in dress lining material blue and red with the standard markings (Megows Models in HUGE letters under the wing). He flew it with a beat up .40 glow engine. I always wanted to see if I could convert to electric just to drive the guys at the field bonkers.

Currently using a used, geared Astro Cobalt 40 with 20 A size NiMH cells spinning a 14" x 8" prop. Takes off at 1/2 throttle and consistantly climbs slightly with throttle at 1 tick above off. 20 minute flights are the norm. It will go nearly vertical at full throttle. Nothing like flying a 25 year old model from a 70 year old design.

The only change for electric was the motor mount and centering the batteries the balance point. Next comes some enormous "old school" floats!

Oh yeah I almost forgot, It is a Clark Y airfoil

[GoldenAge]

I am currently flying a Big Quaker (96") my father built for R/C in the late '70s

Hey Slowbuilder,

Post some pics of that beauty if you have them!

The 96" version, from what I understand is an extended wing version of the original 84" Flying Quaker. Both of these are supposedly real nice floaters!

Scott

[Tim Wolff]

Mine is going to be a winter project. I've just got too much in the queue to tie-up the workbench with a build of this magnitude.

[Tony Oliver]

Back to your original enquiry - in the 1937 Frank Zaic yearbook has the plan for the Quaker and the section is clearly stated as Clark-Y. The drawing has the entry 'Manufactured by Megows, Phila. PA.

Also the [poer is quoted as 1/4 to 1/3HP motor

Tony

[Tim Wolff]

Thanks for the confirmation. I need a SAM legal design and this kit is a ~late 70's redraw. Needed to confirm that the airfoil was not modified as that is a no-no per SAM regulations.

[Cebola]

Tiberius

The original Quaker uses a 10% Clark Y , but I prefer use a new Drela 31 or Drela 51, signal of new times in Old timers!!!

[mewert]

Hey guys, lets get this thread going again with some pics of those Quaker builds you were anticipating 4 years ago. Wonder what they look like!! :)

[imp.bob]

Hi Golden, is the Scorpion you`re going to build this one? I`ve been building these in all sizes for the last 30 years, from 44" (original) to 10 feet ! Firstly diesel then petrol now electric. The odd thing was that they all flew in exactly the same manner, size didn`t seem to make any difference! A real Classic and a wonderfully relaxing flyer.That's the one I'm going to build next! Mine is on order from Penn Valley Hobbies. I also have a Scorpion Major short kit on order from Bob Holman.
Whichever one arrives first, I'll start building :)

Good luck with the Quaker project! I did a build article on my Quaker flash in another forum (didn't know about this one). Looking forward to seeing the pics,

Scott

[bill g]

I have several quakers, from36'' to 84'', and they all fly well. I have a set of original Megow plans, and they show the airfoil as flat bottom.

[johnschicker]

Would some one be able to copy a set of plans for me as i would like to build one good for a 65 year old Regards john :)

[johnvb]

Finished my 54" Quaker this afternoon. Maiden flight tomorrow morning if the wind is light.

Power is a KMills 1.3cc diesel. Covering is Pro-film (Oracover) cream, trans orange and blue. 2.4ghz radio. I used reed for the wingtips because I wanted to try it out.

[Demon-Leather]

Hey guys, lets get this thread going again with some pics of those Quaker builds you were anticipating 4 years ago. Wonder what they look like!! :)
Hehehe... sometimes,.. you have to wait a while for truely good things! :D I just resurrected My old 1939 Scientific Mercury Jr. post started a bit over 4 years ago. At that time, the fuselage & wings were already 3 years old! :eek:
Guess it's like that old wine commercial.. "we will fly no vintage, before it's time" :rolleyes: I'm trying to get the Mercury Jr. done & in the air before her 70th birthday next year."Old classic models never die... just their owners" :cool: Bob

[Jessiej]

[QUOTE=imp.bob][FONT=Georgia]Hi Golden, is the Scorpion you`re going to build this one? I`ve been building these in all sizes for the last 30 years, from 44" (original) to 10 feet !

Your Scorpions are absolutely beautifull! The gracefull lines make the design a real work of art.

jess