stunthanger.com
Building Tips and technical articles. => 1/2 A building. => Topic started by: Larry Wong on January 31, 2010, 02:43:49 PM
-
Bad times call for down sizing HB~> HB~> HB~>
-
Larry,
Is this a Pinto---or did you downscale from an Oriental?
-
Oreintal down size
-
Thats a perty dadgum plane right there! how'd you attach the canopy? .061 I guess?
-
Larry,
Is this a Pinto---or did you downscale from an Oriental?
In essence they are pretty much the same thing!
Robert
-
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
-
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 . #^ #^
-
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.
-
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.
-
Power? Line length? Prop and fuel? How does it fly? Tell all!
-
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
-
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. y1
-
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?
-
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.
-
Look at what Warren Kerth did with a T D in speed! y1
-
Look at what Warren Kerth did with a T D in speed! y1
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
-
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
-
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. S?P
-
JUST THINK SMALLER FLYING FIELDS WITH MORE CIRCLES Hummmm S?P S?P
-
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... y1 y1
-
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.
-
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.
-
Flew the 1/2A oriental last week end on 50ft lines. Lap time 4.6 seconds. Needs some refinements.