Author Topic: Oriental 1/2 a (Read 2684 times)

Larry Wong · « **on:** January 31, 2010, 02:43:49 PM »

Bad times call for down sizing

Alan Hahn · « **Reply #1 on:** January 31, 2010, 03:25:29 PM »

Larry,
Is this a Pinto---or did you downscale from an Oriental?

Larry Wong · « **Reply #2 on:** January 31, 2010, 04:21:12 PM »

Oreintal down size

John Crocker · « **Reply #3 on:** January 31, 2010, 05:07:54 PM »

Thats a perty dadgum plane right there! how'd you attach the canopy? .061 I guess?

Robert McHam · « **Reply #4 on:** January 31, 2010, 05:38:43 PM »

Quote from: Alan Hahn on January 31, 2010, 03:25:29 PM

Larry,
Is this a Pinto---or did you downscale from an Oriental?

In essence they are pretty much the same thing!

Robert

Alan Hahn · « **Reply #5 on:** January 31, 2010, 06:25:55 PM »

Quote from: Robert McHam on January 31, 2010, 05:38:43 PM

In essence they are pretty much the same thing!

Robert

Robert,
Only if you scale the Oriental to the Pinto size (I think). I am not sure how big the Larry's 1/2A Oriental is.

Alan

Larry Wong · « **Reply #6 on:** January 31, 2010, 07:11:26 PM »

Alan the builder and owner is Howard Yamagata he is a member of the Alameda Aero nuts hope he will log on to give more info. on his plane .

Jim Thomerson · « **Reply #7 on:** February 01, 2010, 11:42:33 AM »

The Pinto is a 1/2A Oriental. It was designed by Dee Rice who gave the plans to Dick Mathis. Or so Dee told me.

Alan Hahn · « **Reply #8 on:** February 01, 2010, 01:03:38 PM »

Quote from: Jim Thomerson on February 01, 2010, 11:42:33 AM

The Pinto is a 1/2A Oriental. It was designed by Dee Rice who gave the plans to Dick Mathis. Or so Dee told me.

I agree, but 1/2A is not a well defined size, so this new one might be a little larger or smaller than the Pinto.

Larry Renger · « **Reply #9 on:** February 02, 2010, 08:45:31 PM »

Power? Line length? Prop and fuel? How does it fly? Tell all!

Trostle · « **Reply #10 on:** February 02, 2010, 09:25:02 PM »

Quote from: Jim Thomerson on February 01, 2010, 11:42:33 AM

The Pinto is a 1/2A Oriental. It was designed by Dee Rice who gave the plans to Dick Mathis. Or so Dee told me.

In fact, Dick Mathis stated in his December 72 Flying Models article for his Pinto:

"The airplane itself is essentially a shrunken full-size stunter, similar to the well-known "Oriental" by Dee Rice (it was his idea in the first place to try 1/2A stunt)."

The Mathis Pinto from FM has a 34 inch span and has something just less than 200 sq in.

Keith

Larry Wong · « **Reply #11 on:** February 02, 2010, 11:03:34 PM »

OK. Guys this is what I got from Howard, the Oriental is a Pinto increased 25%. wing span is 37 7/8 " has a T D .049 on pressure weight is 13. oz flown on 42 ft lines.

John Crocker · « **Reply #12 on:** February 03, 2010, 05:50:56 PM »

A TD .049? That seems like a lot of plane (weight and size) for a 049. Do you know how well it will stunt and if there have been any mods to the engine?

Larry Renger · « **Reply #13 on:** February 03, 2010, 07:08:38 PM »

Running pressure, the power should be reliable. Also he may have drilled out the venturi, which will give way more power than the stock venturi on suction. I have heard of competitive models with Tee Dee power weighing 14 ounces. 30% Nitro will help, too. Tee Dees have a lot of unused potential if you are willing to wring them out.

Larry Wong · « **Reply #14 on:** February 03, 2010, 11:00:20 PM »

Look at what Warren Kerth did with a T D in speed!

dennis lipsett · « **Reply #15 on:** February 03, 2010, 11:24:06 PM »

Quote from: Larry Wong on February 03, 2010, 11:00:20 PM

Look at what Warren Kerth did with a T D in speed!

yes with a plane called the peanut. Nine inch w/s, either bladder or pressure and a 4 inch prop. It was kitted but I never got one to go as fast. Of course I was just a pup. But Mr Kerth surely was consistant with that plane and won for a lot of years.
Dennis

Trostle · « **Reply #16 on:** February 04, 2010, 09:26:55 AM »

Quote from: John Crocker on February 03, 2010, 05:50:56 PM

A TD .049? That seems like a lot of plane (weight and size) for a 049. Do you know how well it will stunt and if there have been any mods to the engine?

In the 70's and 80's, there were several very successfull 1/2A stunt designs published, most all powered by Cox .049 engines, either the TD or the Medallion. Included in that list is the Tercel that won 3 times at the Nats unofficial 1/2A stunt event and placed at several others. Its power plant at various times was the TD or the Medallion. The model has a 33 inch span, has 220 sq in, weighs 11 oz and flew on 52 to 55 foot lines. Bob Baron's Rare Bear was even bigger.

These 1/2A sutnters can do maneuvers that their big brothers cannot because of that power and wing loading.

Dick Mathis competed successfully with his at some local contests against the full size ships as did Bob Baron.

Keith

Larry Renger · « **Reply #17 on:** February 04, 2010, 03:43:30 PM »

At our "Knight's Joust" Contest this fall, the 1cc models ALL beat out the Advanced flyers! Around here, the Advanced guys fly piped models, nothing chintzy. Shucks, we even beat some of the Experts! I expect that if we could entice Keith Trostle to finally design and build his Super Tercel (promised how many years?) we would see even better performance.

Larry Wong · « **Reply #18 on:** February 04, 2010, 04:37:19 PM »

JUST THINK SMALLER FLYING FIELDS WITH MORE CIRCLES Hummmm

Larry Wong · « **Reply #19 on:** February 08, 2010, 02:24:10 PM »

We went flying today the plane needs triming, it was vary fast on 42' lines looks like it will be a good stunter, turns great. more to come next week...

minnesotamodeler · « **Reply #20 on:** February 08, 2010, 07:38:47 PM »

Don't be afraid to go to longer lines. I use 48' regularly with the more "powerful" 1/2As, and have a set of 52' I break out occasionally, especially with the .061s.

Larry Renger · « **Reply #21 on:** February 26, 2010, 08:21:51 PM »

Any new reports on performance?

I am re-vitalizing a Pinto that someone built. It needs a bit of work to work right, so maybe in a few weeks, I can see how they fly. I have never seen one in the air!

It looks to come out at just over 10 ounces if no ballast weight is required. Power will be the AP Wasp, Holuszko venturi engine with a uniflo tank. Prop and fuel TBD. Lines probably 48' of .008 solids to start.

Howard.Y · « **Reply #22 on:** March 02, 2010, 07:24:19 PM »

Flew the 1/2A oriental last week end on 50ft lines. Lap time 4.6 seconds. Needs some refinements.