Author Topic: 1/2A Twister plans (Read 1134 times)

Bootlegger · « **on:** February 16, 2020, 05:39:02 PM »

Fellow's does any one have any plans, that work, of a 1/2A twister that I can borrow? Thanks a lot

paw080 · « **Reply #1 on:** February 17, 2020, 03:12:07 PM »

Quote from: Bootlegger on February 16, 2020, 05:39:02 PM

Fellow's does any one have any plans, that work, of a 1/2A twister that I can borrow? Thanks a lot

Hi Bootlegger, I don't have any 1/2A Twister plans; however, there is an easily available 1/2A Twister kit.

Either buy a Sig Akromaster kit or find the Akromaster plans; then put it on a diet and you'll have a

model that can be powered by a Paw .049-.061 Diesel or any 1.0cc glow engine. About 12 years ago,

I constructed an Akromaster, substituted some of the balsa and ended up with an excellent flying model

powered by an MP-Jet 1.0cc Diesel.

The model fly's on 45'X.008" lines and swings a 7" X 5" prop. the model weighs 10.75 oz. sans fuel.

the wing is covered with Micafilm. Best of luck; Tony G.

ray copeland · « **Reply #2 on:** February 17, 2020, 05:06:29 PM »

I have looked at my Akromaster several times and thought this would be a good 1\2a plane! May try it someday

Bootlegger · « **Reply #3 on:** February 17, 2020, 07:21:56 PM »

Motor,I am hoping to power it with a Cox Medallion 049, thanks for asking...

Joe Ed Pederson · « **Reply #4 on:** February 19, 2020, 12:34:49 PM »

Quote from: ray copeland on February 17, 2020, 05:06:29 PM

I have looked at my Akromaster several times and thought this would be a good 1\2a plane! May try it someday

I have built an Akromaster. You should be aware that the kit does not come with plans. It only comes with an instruction sheet. The wing doesn't need a drawing of the wing because the ribs fit in notches in the leading and trailing edges.

I really doubt you could build an Akromaster (especially from the kit wood) that would be light enough to be flyable on a Medallion .049. The wing has 1/4" balsa spars top and bottom, and a 3/8" thick fuselage. I'm pretty sure you would have to draw up a set of plans for the wing and use a much lighter construction method and also utilize 6 pound wood throughout. I suppose you could build a model with the Akromaster's dimensions for a Medallion .049 but it would take a lot of redesigning and trouble.

Joe Ed Pederson
Cuba, MO

paw080 · « **Reply #5 on:** February 19, 2020, 07:00:46 PM »

Quote from: Motorman on February 19, 2020, 02:04:57 PM

You want about 150 - 175 sq. in. wing. Twister is pretty straight forward, might be easy to draw out on paper if you know the aspect ratio and general parameters of a 1/2a stunt plane. I should see if the printer can shrink my FTwister plans.

Motorman

Hi Motorman and Joe, when I saw that Bootlegger was going to use a Medallion .049, I agree that the Sig Akromaster has
too much wing area for the Medallion. Motorman, the Medallion can pull a light(9-11oz) model up to 230sq"s. 150-175 sq"s
is really too small for the Medallion. Please refer to Barry Baxter's 1/2A Stuka stunt design(228 sq"), that flew beautifully(full pattern)
powered with a Cox Medallion .049. The Medallion is actually a better 1/2A(.049) than a TD. 049 engine. Not as powerful of
course, but much more tractable power delivery and fuel economy.

So I suggest you draw up plans for a 220-230sq" Twister, or find plans for Fast Richard's Pinto design. Again, Best of Luck;
Tony G

Larry Renger · « **Reply #6 on:** February 24, 2020, 08:37:52 PM »

RSM kits the Pinto and also my Sky Sport design. Either one could be good with a Medallion on the appropriate length lines.

Author Topic: 1/2A Twister plans (Read 1134 times)

Bootlegger

1/2A Twister plans

paw080

Re: 1/2A Twister plans

ray copeland

Re: 1/2A Twister plans

Bootlegger

Re: 1/2A Twister plans

Joe Ed Pederson

Re: 1/2A Twister plans

paw080

Re: 1/2A Twister plans

Larry Renger

Re: 1/2A Twister plans