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Author Topic: help identifying a 1/2A plane/ now under construction  (Read 7115 times)

Offline Dane Martin

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help identifying a 1/2A plane/ now under construction
« on: March 06, 2015, 07:48:44 PM »
Hey guys. Any ideas as to what this may be?I picked up this 1/2A plane for a song. It's in excellent condition with a medallion .049.
But, what is it? WS is 30". About 15.5" length.
Any pics needed, let me know. I'm cleaning it up to fly this weekend
« Last Edit: March 10, 2015, 11:59:00 PM by Dane Martin »

Offline Dan McEntee

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Re: help identifying a 1/2A plane
« Reply #1 on: March 06, 2015, 09:31:04 PM »
  I would say it's someone's LARs (looks about right) engineered scratch built airplane. Influenced by the Baby Ringmaster. At first that what I thought it was then noticed the constant chord wing. SHould fly OK with the TD up front.
  Nice find!
  Type at you later,
   Dan McEntee
AMA 28784
EAA  1038824
AMA 480405 (American Motorcyclist Association)

Offline Phil Krankowski

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Re: help identifying a 1/2A plane
« Reply #2 on: March 06, 2015, 09:40:25 PM »
http://www.aeromaniacs.com/Zinger.htm

maybe...hard to tell.

Phil

Offline Dane Martin

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Re: help identifying a 1/2A plane
« Reply #3 on: March 06, 2015, 09:48:03 PM »
Definitely some sort of scratch build. I had to perform some surgery. The TE on the inboard side was flapped up real bad. I cut open the bottom of the wrong and cut off the TE. I used clear monokote to splice it all back together so it's not so obvious. The ribs are cut out a little rough... Not being mean, just an obvious scratch build. Its actually a pretty good build. I wish i knew who did it

Offline Dane Martin

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Re: help identifying a 1/2A plane
« Reply #4 on: March 06, 2015, 09:50:49 PM »
http://www.aeromaniacs.com/Zinger.htm

maybe...hard to tell.

Phil

Wow, looking at the plans and inside the wing..... That's awful close!!!!

Offline Larry Renger

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Re: help identifying a 1/2A plane
« Reply #5 on: March 06, 2015, 10:24:24 PM »
Looks like a Brodak Baby Clown to me.
Think S.M.A.L.L. y'all and, it's all good, CL, FF and RC!

DesignMan
 BTW, Dracula Sucks!  A closed mouth gathers no feet!

Offline Dane Martin

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Re: help identifying a 1/2A plane
« Reply #6 on: March 06, 2015, 10:30:49 PM »
The tips are very round on the baby clown. Looks similar though. This is not a kit. And the ribs were cut from Midwest balsa. So it's a scratch build.

Offline Dane Martin

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Re: help identifying a 1/2A plane
« Reply #7 on: March 08, 2015, 03:27:25 PM »
So last night i was anxious to fly today. I looked everywhere and couldn't find cigar tubes in the house, and my daughter did not want to leave the house for me to get more. I just moved in here and have no supplies, so i improvised. Made a bladder tube from a soda cup. I pulled the engine apart and cleaned it.

Flew it today, but the engine was difficult to get running. Fortunately big brother Joey M was there and got it running great. I'm thinking too much pressure from the bladder. Hard to adjust.

Offline Phil Krankowski

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Re: help identifying a 1/2A plane
« Reply #8 on: March 08, 2015, 04:33:50 PM »
It looks like a medallion intake, not a TD.  If the hole in the crank is round then it is a medallion.  Try a non-pressure bladder made from a party balloon or a hard tank.

Phil

Offline Dane Martin

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Re: help identifying a 1/2A plane
« Reply #9 on: March 08, 2015, 05:14:42 PM »
Yes sir, Phil.
It's a medallion. The needle is too course for pressure? It's too difficult for me to get tuned.
How about a small perfect tank?

Offline Joey Mathison 9806

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Re: help identifying a 1/2A plane
« Reply #10 on: March 09, 2015, 04:30:31 PM »
yes Dane the medallion will run very nice with a small suction tank. the TD is a likes pressure.   
200 mph man ama#9806 joey mathison

Offline Tim Wescott

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Re: help identifying a 1/2A plane
« Reply #11 on: March 09, 2015, 04:45:30 PM »
A slack balloon tank should work well.  Search on "Balloon tank" for details.
AMA 64232

The problem with electric is that once you get the smoke generator and sound system installed, the plane is too heavy.

Offline Phil Krankowski

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Re: help identifying a 1/2A plane
« Reply #12 on: March 09, 2015, 05:09:10 PM »
A good "perfect" tank should be fine. 

Since you just rigged for a bladder, pop the pressure bladder off and put a party balloon on as a non-pressure bladder (slack bladder) While you are at the party store (or grocery store) those bracelet rubber bands that are the rage right now appear to be silicone and are quite fuel resistant.  The rubber band will make fastening the balloon onto the fitting of your choice easy.

Phil

Offline Dane Martin

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Re: help identifying a 1/2A plane
« Reply #13 on: March 09, 2015, 06:31:45 PM »
Ok guys. I hate to be a pain, but i am in new territory for myself. I don't seem to have room for a tank (I'll attach a pic). So the slack balloon seems like a good idea. But what about the balloon being higher than the engine center? Will that affect performance inverted?

I have a td i could just bolt on and stick with pressure also...
Thanks so much guys. And thanks again Joey for getting it running. It was really fun to fly

Offline Phil Krankowski

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Re: help identifying a 1/2A plane
« Reply #14 on: March 09, 2015, 09:14:27 PM »
It is your plane, and I don't know what your expectations are.  Is it an advanced trainer or just for sport?  Do you fear locating the bladder inside the wing and the associated wing surgury (matching film, etc)? 

Yes, location affects inverted performance.  Since you are asking I think you want it to do everything.

Do you have fine NVA's?  Hit up texastimers.com to solve that one. I run my TD's at about 3/4 turn open with good results on stock venturis. 

Phil



Offline Dane Martin

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Re: help identifying a 1/2A plane
« Reply #15 on: March 09, 2015, 09:29:16 PM »
In my opinion, it feels like it has potential to be a good stunt plane. I don't mind wing surgery. I had to cut the TE off the inboard side and fix that already.
So whatever yields the best stunt run, I'm willing to do. I really think this plane will do it.

I can definitely put a TD on it with a Texas timers nva. I already need to order another one for Joey... Lol

Offline Phil Krankowski

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Re: help identifying a 1/2A plane
« Reply #16 on: March 09, 2015, 09:45:26 PM »
Sounds like the lowest hanging fruit is the TD. 

Locating the bladder inside the wing makes for a very clean appearance whichever bladder you choose.  It also limits CG effects.

Sounds like fun.  I never tried locating the bladder inside the wing, but it is on the to do list for future builds.

Phil

Offline Dane Martin

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Re: help identifying a 1/2A plane
« Reply #17 on: March 10, 2015, 11:57:52 PM »
A bladder in the wing is a wonderful idea. Since I'm using a bladder either way, I'll leave the medallion on. Its a nice running engine. So phase one of reconstruction is done, the commitment is made and the wing is stripped. 20 min worth of labor before bed, and here it is.

The plan is to drill a hole through the sheeting and locate a ping pong ball just behind the LE so there will be a bump on top and bottom. Should make the weight evenly distributed and even tank height.

Offline Tim Wescott

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Re: help identifying a 1/2A plane/ now under construction
« Reply #18 on: March 11, 2015, 12:32:08 AM »
Dribble some fuel on that ping-pong ball before you commit to using it.  You have one guess as to why I think it's important.
AMA 64232

The problem with electric is that once you get the smoke generator and sound system installed, the plane is too heavy.

Offline Dane Martin

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Re: help identifying a 1/2A plane/ now under construction
« Reply #19 on: March 11, 2015, 07:06:34 AM »
10-4 there Tim.
I have one that feels really hard, not crushable like normal. And I'll drop it in a cup of fuel (raw 25%) and see what happens

Hmmmm.... Would the better option be to just make my own 'glass ball instead of some ping pong ball?
« Last Edit: March 11, 2015, 07:28:18 AM by Dane Martin »

Offline Dane Martin

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Re: help identifying a 1/2A plane/ now under construction
« Reply #20 on: March 12, 2015, 10:16:26 AM »
I left the ball in a cup of 25% nitro overnight. No problems! This makes it such an easy project. Plus i get to change the wing color.

Offline Dane Martin

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Re: help identifying a 1/2A plane/ now under construction
« Reply #21 on: March 12, 2015, 05:20:51 PM »
Ok, ball passed the test. So i cut a hole through the top and bottom sheet. Cut the top sheet off and dropped in the ball. Then fitted the top sheet. I'll fill and sand after we take the kids to the park! So far, very little time invested!

Offline Phil Krankowski

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Re: help identifying a 1/2A plane/ now under construction
« Reply #22 on: March 12, 2015, 06:21:41 PM »
That looks awesome.  Very clean.

Phil

Offline Dane Martin

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Re: help identifying a 1/2A plane/ now under construction
« Reply #23 on: March 13, 2015, 10:18:34 AM »
Thanks Phil!
I'll use clear to fill and sand the sheets tonight. Then monokote on the wings, with painted sheet sections. I'll use transparent yellow monokote, and just match the plane with the paint.

Offline Dane Martin

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Re: help identifying a 1/2A plane/ now under construction
« Reply #24 on: March 13, 2015, 10:52:48 PM »
Lots of progress. Clear done, sanded and did again. I'm not thoroughly concerned with this looking perfect, just much better. Then i monokoted the wings transparent yellow. Then masked off and started to paint the center. I'll let that dry overnight and sand most of it off, then second coat it. Should look plenty good!

Offline Dane Martin

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Re: help identifying a 1/2A plane/ now under construction
« Reply #25 on: March 14, 2015, 11:50:47 PM »
Ok, here's the final product. I really phoned it in with the paint job, but in all fairness I'll probably just end up giving the plane away to some deserving soul... Lol
Any way, definitely keeps the 1/2A spark going!

Offline Phil Krankowski

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Re: help identifying a 1/2A plane/ now under construction
« Reply #26 on: March 15, 2015, 09:57:41 AM »
That is a looker.  Time to see how it flies.
Phil


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