gas twin bash

Thoughts of a twin Ryobi have been perplexing for months. Don’t build worth a hoot so it will be necessary to find and modify an airframe already built. A single with trainer characteristics is probably best for my limited building skills.

Any suggestions for an airplane that would be good for a gas twin bash?

Bill

Being as Ryobi engines are heavy for the amount of output they
produce finding somethig with a LOT of wing area is a good idea..
Something as the Giant Telemaster would work... If you wanted more
'sporty' something along the lines of the Lanier Stinger 120 or the
Giant Stinger would work... And of course, if you wanted to go more
scale then something like the smaller B25 would work.. Would be as
such tho, s c a l e ..

hmmm lots of wing area ehhh what about a kadet senior .40. Once you add the ryobis it'll balance out.

patterndreamer,

Surely you jest.

The Kadet Senior that I have flies well with 25 or 45 glow engines on the wing. A much beefier airframe (wing and fuselage) is necessary for gas engines.

Bill

Robby,

I have looked for a damaged warbird to bash with 60’s to 90’s and found nothing. Closest find was a 23-pound P-38 with 60’s and solid rudders (vertical fin and rudder built as one piece). Just looking at it was creepy. It was pretty but an aerodynamic disaster.

I don’t mind ugly (not in females) but the aerodynamics must be sound.

Bill

Bill,
Another option...
Look for a Nosen or A&A 310..
There are many out and about,, and UNDONE..
Maybe place adverts on the various site, "WANTED" ..

Instructions say 60/90... I have seen G45s on one..
But I have never seen one with .60s.. 90s, yes..

Plus they are impressive,, and very easy to fly..

.

Robby my building skills are abysmal but I can work on modifications or crash repair for weeks. Seems silly. Anything that starts looking pretty is never finished. Must be a mental block or something. I am forever relegated to patching and resolved to that fact. I can make a piece of junk fly but can’t possibly work on anything that looks good.

Bill

hey you couldn't say you wouldn't have an enjoyable time flyng a twin cadet senior on two gassers.

I absolutely would have a good time but it would break often and easily. The strength of the airframe must be capable of the loads that will be imposed. It is best to stick with structural designs that have a chance of survival.

But you are joshing. Right?


Bill

How about two Ultra Stick 120s joined together "Twin Mustang" style? Much simpler to do than putting two gassers on the wing because you don't have to reinforce it for the twisting stresses or find a place for the tanks and throttle servos.

Jim

While I don’t have difficulty with tanks and servos or structural reinforcement, joining fuselages is way beyond my building skill. But it is a nifty idea.

Bill

Decided to put hard points on a very old 96” stick wing that is currently flying and attempt to mount engines. Balance calcs don’t look very promising. We’ll see.

Must be insane.

Anyone experimented with a single tank for two pumper carburators?
Bill

[b]BillS:

My "C-3/10" has a single tank, dual clunks, and a VP-30 pump on each engine. Works fine.

Here's the whole plane, and the pump in the right nacelle.

Bill.

An initial balance check appears OK and somewhat better than expected. Weather it will fly or not is an entirely different story. Wing loading will be very high.

Bill,

Were you referring to gas or glow engines?

BillS

[b]BillS:

The C-3/10 has a pair of Magnum XL 46 engines, each with its own Perry VP-30 pump.

Most gasoline engines use the Walbro or similar carb, these have a fuel pump built into the carb.

Bill.