Geistware

My Feedback: (16)

Everyone, I am new to multi-engine planes. I have never flown one but have experience in flying all other models, aerobatic and sports models. My question is this. I am interested in a 26cc twin. I would prefer an ARF something as simple as a twin-star but large enough for gasoline engines. Does anyone have any manufacturer or individual who may have what I need?
Thanks

Gremlin Castle

My Feedback: (14)

Unfortunately Twin ARF kits of any size are sparse let alone sport flyer designs. This becomes even more so when Gassers are involved.

Usually in non scale the easiest way is to pick an ARF airframe large enough for the task and bash it into the twin configuration. While there is still building involved it is less than a total frame up and finish from plans.

Robby

My Feedback: (18)

Miles,, great question....
Now lets start by looking at comparing like singles..
How much does one have in a .60 size aerobat ...
How much does one have in a 60cc aerobat........

Something as simple as a Twinstar one can expect to have
about 400$/500$... These plane use inexpensive motors
and basically standard servos... Added bennie of these
planes is that one can toss in car and go...

Allrighty.. Now you want to do up a twin using two G26
motors.. For starters you have 300$ times two right there..
As you are well aware,, as airframes increase in size the
price of them go up even faster... And as you also know
the larger the airframe then more more powerful servos
are requirement...
So the very first question one must ask is,, "Can I really
afford to do this project" ... And this is in no means directed
at you, Miles,, but people in general..
Next question should be,, and this one is directed to you as
well,, "Am I able to transport"...
Using two G26 motors will require 80" and above w/s... This
also will require more field set-up.. "Do I want to deal with this"..

I wanted a big bipe.. The Aeroworks flys much better than the H9..
But no way in heck do I have ANY desire to deal with the field
set-up of the Aeroworks... Sooooo,, I got the H9 (46%)....
(and yes,, you can play wid it)

And then,, one much ask what type of flying do then wish to
do with this plane.. General fly around the pattern,, mild aerobatics,,
or be able to get radical with it... Because I do know your
capabilities I won't even address this as I know you are more than
capable... Annndd,, know you have seen some of us get silly
with our smaller planes,, and seein' Mac Hodges get silly with
his very larger plane,, you know the planes can be made capable...

So it comes down to,, what look do you want,, what type of flying
do you want to do,, and what are you size restrictions....

Robby

Ed_Moorman

My Feedback: (1)

For a non-scale, gasser twin you'll have to build something. I think the best set-up would to use 2 1.20 sized planes and make a twin fuselage plane. I have converted planes with nacelles and twin fuselages and the nacelle planes tend to come out with a higher wing loading. Just think what an Ultra Stick 120 would weigh with 2 nacelles with G-26s on them. The twin fuselage design comes out with a lighter wing loading because you add the new center section between the fuselages.

I know the US 120 flies well with a G-26 so you could use 2 fuselages and build a new wing center section of 18"-20" (Give yourself 2" prop clearance) and join the stabs and you would have a nice conversion. For total construction, you could do a twin fuselage 4*120 by buying 1 kit and copying the fuselage. I would use wing tubes to make it easier to carry. You might also consider a twin fuselage Giant Big Stick. In any event, it would be a big project.

TLH101

My Feedback: (90)

A friend is planning to convert a Giant Stinger to a twin with a layout similar to a Ziroli B-25, (2 nacelles, and a twin tail with rudders in the prop wash area) and use a couple of G-23's or 26's.

Geistware

My Feedback: (16)

Thanks for the input. I was initially looking for something that had a fuse and engine pods and I just install the two outboard wing halves. I know what I am going to say sounds silly but please work with me on this one.

If I take a 50cc YAK with wing and horizontal tail section on a tube, I could plug in the outboard wings and elevators, and make an inboard section that would connect the two fuselages using the existing wing tubes wings and elevators.

If this is the case, then I will begin looking for inexpensive ARF's to look at this with. Do I have this right????

William Robison

My Feedback: (3)

Miles:

You are on your way. Have fun.

Welcome to the world of "Twinsanity."

Bill.

Gremlin Castle

My Feedback: (14)

It should work out fine> Cermark joined two Sukhois together like that a few years back. Pull up an old magazine from 5 or 6 years back and look at it for clues on how to carry off your project.

jrf

My Feedback: (551)

That was Pacific Aeromodel's Twin Suchoi. No longer in production, but it flew pretty well as I remember.

Jim

Geistware

My Feedback: (16)

WOW, Ok. I will look into it.
I thought I understood and was joking when I sent the last post but you guys are SERIOUS!

I will check into it or looking for a used one. I may be able to come across a 50cc plane. At first thought, I would think of two PW Extra's. I can modify them with a center wing and elevator section using some pieces that I have laying around.

If I go this route, I will let you all know and post pictures!

jrf

My Feedback: (551)

Look for something a whole lot lighter than the PW Extra. The wing loading is going to be pretty high even with a center section added to the wing. I'd chose a base model with a wing loading of 25 oz/sq. ft. or less.

Jim

iron eagel

You may want to spend some time on the RCwarbirds site http://www.rcwarbirds.com, looking at the post by twinman. Flying multi engine rc aircraft ,or the real ones for that matter is a lot different than a single engine. Get a leg up on it reading some of post he has put up.
Best of luck with your build, have fun with it!

multiflyer

Generally, bashing 2 airplanes into a twin fuselage type plane works fine. Wing loading is increased but stability is great since 2 tails are now stabilizing less than 2 complete wings.

Multiflyer

Geistware

My Feedback: (16)

Nice site. Has a lot of information.
I will have to check it out more.
THanks

NortheastAero

My Feedback: (6)

Geistware,

Are you interested in scratch building a Sport Twin?

Robby

My Feedback: (18)

John,,,
Do you have something that can handle G26 motors... (26cc) ...?

Or something in the works...?

Geistware

My Feedback: (16)

I am not a builder. When I glue two pieces of wood together, they fall apart but my fingers are glued tightly together. If I have no choice I will work something out. I don't know if a twin boom design will be viable. I am thinking of a 50cc kit where the engine can be moved from the fuse to the wing. The wing has to be able to handle a LOT of weight and torque. That is where the bashing will have to be done. I know this is harder but the other way just seems to take more aerodynamic design skill than I have.

NortheastAero

My Feedback: (6)

Robby,

I have a Giant Scale Twin-Air drawn up in CAD and was ready to start prototyping it when it got put on the shelf to work on the Duellist 2/60. I think it will handle a couple of 1.4ci gas motors. I'll take a look at the plans this weekend and see. It would only be a minor modification to enlarge the nacelles to handle the gas motor versus the glow motors.

Geistware

My Feedback: (16)

John,
I have a friend that might build it.
If you have the plans, I and would be willing to share, then I can show them to him and see what he says.

NortheastAero

My Feedback: (6)

I took a long look at the plans this weekend and determined that the Twin-Air .60 (the plans I had in mind) do not look good with nacelles large enough to handle the 1.4ci gas motors (even the iginition ones). Sorry about that. I'd have to scale up the entire planset to fit the engines in the nacelles and to kep the looks of the airplane.

Geistware

My Feedback: (16)

No problem.
Thanks for looking at it.
I will come up with something.
Maybe find someone in Florida who whats to get rid of their twin. <hint, hint>
I want gas but I also want something around 50cc total engine displacement.

onewing

My Feedback: (27)

John,

Would you please give us a very rough estimate on when a twin air 60 or a Duellist 60 may come out?

Thanks.

Onewing (wish to have two engines on it).

BillS

Geistware,

I am also interested in a gas twin. I don’t build so by necessity I bash and modify (kluge). Finding a flying single and reinforcing the wing seems to be the best approach for me. A twin with gas engines is likely to weigh between 20 and 35 pounds. The engines are likely to be 4 pounds each. A single engine airframe in the 20 to 25 pound range is probably appropriate.

I picked three candidates, a very old giant Ugly Stik, a Pattern plane with foam wing, and a giant Stinger. I finally decided on the Ugly Stik and put hard points in the wing to mount firewalls (no nacelles). The wing is built like a tank and the only reinforcing necessary was for the hard points. Since the engines are gas I intend to use a single fuel tank in the fuselage. The end result is not likely to be pretty but I like twins.

Hope the thoughts help.

Bill

Geistware

My Feedback: (16)

Thanks Bill,
I to looked at the Stinger but figured if something had to be built, to just get a 50cc bird and modify the wings. While something more scale would work, I to want to get into a twin.
Everyone, Thanks again for all your help.

BillS

Geistware,

When you find a suitable candidate for twin gas engines please let us know.

Bill