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.15 sized pylon racers - 6/26/2007 8:09:01 AM   
Boo2


 

Posts: 161
Joined: 11/21/2004
From: Brighton, UNITED KINGDOM
Status: offline 		Hi,

I read that there used to be (or still is ?) a class for .15 cu in (2.5 cc) pylon racers in the USA. I have a piped MDS .15 and would like to build something fast for this as a training plane for jets so I thought that a .15 sized pylon racer would be ideal. Does anyone know where I can find a plan or (ideally) and ARTF of such a thing ?

Many thanks,

Boo
       Post #: 1

RE: .15 sized pylon racers - 6/26/2007 1:10:53 PM   
j.duncker



Posts: 1132
Joined: 6/22/2004
From: Where I park the RV, AK, USA
Status: offline 		The 1/4 midgets were fragile and not designed for a rear exhaust + pipe.

In your position I would scale down a Weston Magnum - wing flat plate 3/16ths balsa - upright engine and either fit twin fins or a V tail. Should be well mental.

Incidentally I had a MDS 15 great little engine 24,000 +rpm on a toothpick but it is noisy really really noisy. Hope your club does not have a noise limit because it won't pass.

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RE: .15 sized pylon racers - 6/26/2007 1:20:30 PM   
Boo2


 

Posts: 161
Joined: 11/21/2004
From: Brighton, UNITED KINGDOM
Status: offline
quote:

ORIGINAL: j.duncker
The 1/4 midgets were fragile and not designed for a rear exhaust + pipe.


Oh I didn't know that, how did they cope with Rossi 15s and Cox Conquests then ?

--
Boo

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       Post #: 3

RE: .15 sized pylon racers - 6/26/2007 2:56:26 PM   
daven



Posts: 6764
Joined: 12/7/2001
From: Andover, MN, USA
Status: online 		1/4 Midgets did have rear exhaust, but it was just a straight pipe coming out of the back. Non tuned, or muffled for that matter. Pipe was about 1/2" round by about 4" long. Not sure if a 15 sized plane is ideally suited for a Jet trainer though.

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RE: .15 sized pylon racers - 6/26/2007 4:25:40 PM   
fizzwater2


 

Posts: 741
Joined: 8/16/2004
From: Paola, KS, USA
Status: offline 		Back when QM's were .15's, it was my favorite racing event. The Nelson .15 used to run around 27,500 on the ground, and with that mini-pipe, it was quite a sound. I don't know if I'd call them "fragile" - they were glass fuse, sheeted foam wings just like the F1's, only smaller.

I wish they still ran the QM15's here.. lots of fun!

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RE: .15 sized pylon racers - 6/26/2007 6:28:54 PM   
Boo2


 

Posts: 161
Joined: 11/21/2004
From: Brighton, UNITED KINGDOM
Status: offline
quote:

ORIGINAL: fizzwater2

Back when QM's were .15's, it was my favorite racing event. The Nelson .15 used to run around 27,500 on the ground, and with that mini-pipe, it was quite a sound. I don't know if I'd call them "fragile" - they were glass fuse, sheeted foam wings just like the F1's, only smaller.

I wish they still ran the QM15's here.. lots of fun!


A glass fuzz / foam wing kit would fit the bill, does anyone still make one do you know ?

Boo

(in reply to fizzwater2)
       Post #: 6

RE: .15 sized pylon racers - 6/26/2007 7:16:07 PM   
Electric Delta



Posts: 165
Joined: 1/23/2005
From: Mebane, NC, USA
Status: offline 		Check out Matney Models at www.matneymodels.com , he has three different QM15 short kits available. Fiberglass fuselage, foam wings cores and plans; as far as I know, you have to supply your own wood and hardware.

< Message edited by Electric Delta -- 6/26/2007 8:39:42 PM >

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RE: .15 sized pylon racers - 6/26/2007 8:03:48 PM   
fizzwater2


 

Posts: 741
Joined: 8/16/2004
From: Paola, KS, USA
Status: offline 		in order for that link to work, I had to remove the comma at the end..

www.matneymodels.com



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RE: .15 sized pylon racers - 7/2/2007 5:32:31 AM   
s-10promod


 

Posts: 116
Joined: 2/13/2007
From: Valley Center, KS, USA
Status: offline 		Take a look at Wild Hare R/C they have a LR1-A that would be what your looking for. Fizz I've still got a Conquest 15 also, but just bought a QM.40 so no budget left to do anymore projects at this time

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       Post #: 9

RE: .15 sized pylon racers - 7/2/2007 2:46:37 PM   
fizzwater2


 

Posts: 741
Joined: 8/16/2004
From: Paola, KS, USA
Status: offline 		As long as we're talking about .15 sized QM planes ( or what USED to be QM) - was it Ron Young that used to customize the conquest .15's with an ABC piston/sleeve combo, shaved down fins to fit a smaller cowl, etc?

I still have a couple of N15's, a stock conquest, and one of these customized ones. Just wondering if I was remembering the name of the guy that did the mods..



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RE: .15 sized pylon racers - 7/3/2007 5:46:44 AM   
s-10promod


 

Posts: 116
Joined: 2/13/2007
From: Valley Center, KS, USA
Status: offline 		Fizz, not sure about who used to work them. I had a deal with a guy I knew, He would buy a couple at a time from someone and use them for a couple races and replace them. That's where I came into the deal! I got nearly new ones for next to nothing and still ran like new for very little money!Dang, wish he was still around I would love to get a deal like that on some Nelsons!!!

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       Post #: 11

RE: .15 sized pylon racers - 7/3/2007 2:43:00 PM   
Dan Vincent


 

Posts: 915
Joined: 7/13/2003
From: Sanford, FL, USA
Status: offline 		Fizz,

Here is a picture of my Ron Young modified Cox Conquest .15 for QM. He converted them to ABC as was mentioned.

Also here are three other rear-exhaust engines that were popular in QM at one time or another.

My Rossi came directly from George Aldrich. He said it was the best-running stock Rossi he had ever seen and decided to not modify it.

The Goldhead Taipan .15 is usually fairly cheap on ebay.

I can still hear those little screamers picking up RPM around the pylons. Loved the QM 15 Class, too bad it went away.

The last one is a Nelson .15 if you've never seen one.

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< Message edited by Dan Vincent -- 7/3/2007 2:44:51 PM >

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RE: .15 sized pylon racers - 7/3/2007 3:05:44 PM   
fizzwater2


 

Posts: 741
Joined: 8/16/2004
From: Paola, KS, USA
Status: offline 		Dan - thanks for the pics! My Young Conquest looks like that, I've got a Rossi courtesy of a good friend of mine, and there's still 2 Nelsons in my engine stash.. Guess I should look for one of those Taipans to round out the collection.

I agree, it's too bad that the class went away. I found a box of carbon fiber props the other day, too - one was marked "28,100" on it.. two or three of them were right out of the mold, not even finished yet. Those were wicked little knife blades, eh?



< Message edited by fizzwater2 -- 7/3/2007 3:06:39 PM >

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RE: .15 sized pylon racers - 7/3/2007 4:08:17 PM   
Dan Vincent


 

Posts: 915
Joined: 7/13/2003
From: Sanford, FL, USA
Status: offline 		Yup, loved QM.

I still have a glass DH-10 fuselage and foam wings around here someplace, and two fiberglass Rivets fuselages and maybe 1 set of foam wings.

Also have a HOB Shoestring kit but someone started to build the nose section.

< Message edited by Dan Vincent -- 7/3/2007 4:09:26 PM >

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RE: .15 sized pylon racers - 7/3/2007 4:17:30 PM