Extreme Speed Prop Planes Discuss the need for speed with fast prop planes (Screamin Demon, Diamond Dust, Shrikes or any REAL sound breakin'''' plane)

Twin engine speed planes

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Old 08-10-2009, 06:45 PM
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Lomcevak Duck
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Default Twin engine speed planes

I'm looking for pics and details of any twin engine speed planes out there, and searches through this forum and the rest of RCU turned up very little. I'd like to compile a list of what's been done, whether it's a currently available kit, your own design, or a bash of something into a twin.

Thanks in advance.
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Old 08-10-2009, 06:50 PM
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Default RE: Twin engine speed planes

I'm assuming you found my twin Outlaw??
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Old 08-10-2009, 08:26 PM
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Default RE: Twin engine speed planes


ORIGINAL: evan-RCU

I'm assuming you found my twin Outlaw??
Boy that was something! Are you the one that had the video posted?
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Old 08-10-2009, 08:30 PM
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Default RE: Twin engine speed planes

It's even cooler sounding in person.
I've been kind of watching out for a Duelist myself. I think that would be a fun plane.
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Old 08-10-2009, 08:36 PM
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Default RE: Twin engine speed planes


ORIGINAL: vicman
I've been kind of watching out for a Duelist myself. I think that would be a fun plane.
I've got one of them, but only 40LAs on it. My friend Dick Sarpolus had a plane called the Twin Magnum 40 that he flew with two K&B 6.5s with tuned pipes that he used to blow up the K&Bs regularly on.
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Old 08-10-2009, 08:47 PM
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Default RE: Twin engine speed planes


ORIGINAL: evan-RCU

I'm assuming you found my twin Outlaw??
Yes I did. It is my main inspiration for wanting to build a twin for speed. I really like your twin Kaos too, even though that's not really a speed design. I like my single engine Kaos, so I really considered scaling down the twin version for speed.

I have a pair of OS .32SXs NIB and I've been trying to come up with something fitting for them, but nothing is really standing out just yet.

I thought about doing a twin Q-500 or a twin mustang, but I can't find a mustang kit in the size range I am thinking about. The HOB mustang I think may be too small to bash into a .32 sized F-82 and the GP .40 I think is too large with too thick of an airfoil to be really speedy.
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Old 08-10-2009, 08:49 PM
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Default RE: Twin engine speed planes

Also on the pondering list was/is the Matney models Zoomer with a single fuse and twin .32s
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Old 08-10-2009, 08:52 PM
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Default RE: Twin engine speed planes

Lomcevak Duck

How about a Nitro Models Bobcat with a pusher and a puller? My Bobcat is coming out so tail heavy I think I'm going to leave the tail off of it. My friends Bobcat was very tail heavy also, it took batteries and a lot of lead in the nose to balance it.
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Old 08-10-2009, 09:32 PM
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Default RE: Twin engine speed planes

Rutan Pond racer. Seen video of a giant 1/4 scale one not sure why no one has built a smaller one. About the coolest plane ever built.
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Old 08-10-2009, 10:06 PM
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Default RE: Twin engine speed planes

Did you come across Funkworks Blackbird?
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Old 08-11-2009, 06:35 AM
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Default RE: Twin engine speed planes

I did read that thread some time ago, but I lost track of it. I'll read through it again.

And I have seen the video of the Rutan pond racer, I'm not sure I'm ready to tackle that complex wing from an engineering standpoint.
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Old 08-11-2009, 07:29 AM
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Default RE: Twin engine speed planes

I vote for a pusher / puller BobCat type thing too. Makes perfect sense....more sense than sticking a speed brake out on each wing panel. I'd run the rear engine on bladder with just a fuel shutoff, for clean runs that aren't pitch sensitive.
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Old 08-11-2009, 09:15 AM
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Default RE: Twin engine speed planes

I am not sure if these are available yet...... but its on my "When I get a new job" list

http://www.ne-aero.com/super-duelist_pictures.html
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Old 08-11-2009, 12:45 PM
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Default RE: Twin engine speed planes

Twin .32's.... I kinda just had my eyes glass over and go into a trance........ on pipes.... ohhhhhh......


I have to think sleeker than a F-82 or P-38. If there was only plans or kit for the pond racer I'd be all over it. For me it could not be a push pull.... sorry....

I'll have to dig up a pic of my twin Beast from the late 80's early 90's. Sorry I'm on the road this week.
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Old 08-11-2009, 02:34 PM
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Default RE: Twin engine speed planes

A very nice twin-powered fast RC1 type pattern plane is made by Topp-Rippin and called COMET TWIN

Please see:

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Old 08-11-2009, 04:06 PM
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Default RE: Twin engine speed planes

About two years ago, it might be three I got into a bragging match with a "Speed Expert" right here on this Forum. The end result was that I challenged him to a contest. One of my Pylon Racers would be faster than his twin Jett Tuned Pipe motors on a delta, which appropriately, was named a "BOOGIE BOARD" by somebody else. Naturaly I was ridiculed. Well the Boggie Board never flew, which to me was inevitable. The other problem was getting both Tuned Pipe engines "On Tune" at the same time, again obvious to me. With sport engines it is not too difficult, tuned piped engines however are a different story.

I never got the wagered bottle of Rum!

If you want true all out speed then stick with a single tuned pipe engine and do the research.

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Old 08-11-2009, 06:10 PM
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Default RE: Twin engine speed planes

ORIGINAL: Ed Smith

If you want true all out speed then stick with a single tuned pipe engine and do the research.
Yes you're absolutely right. Whenever 200 mph speed claims of Twin- powered speed planes (be it conventional or delta type airframe) show up here it's time for a big smile

For instance, if you look at the German Speed Cup contenders, nobody will ever use a twin-power setup. Even the inline tractor/pusher configuration is not worth a try in case of serious nitro powered speed attempts.

However, this thread rather focuses on "sport speed planes" I believe which is always an interesting topic.
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Old 08-11-2009, 06:17 PM
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Default RE: Twin engine speed planes

Another nice Twin that has been optimised for fast combat fighting: The full composite Me-110 by Savex (1:12 scale)



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Old 08-11-2009, 06:56 PM
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Default RE: Twin engine speed planes


ORIGINAL: I-Love-Jets
For instance, if you look at the German Speed Cup contenders, nobody will ever use a twin-power setup. Even the inline tractor/pusher configuration is not worth a try in case of serious nitro powered speed attempts.
I think in theory that this might be about the only arrangement that might ever offer a speed advantage by using two of a particular engine rather than one - since it seems to me you may be able to double the power without increasing the frontal area much or at all - if you line the pipes up anyhow. I doubt it offers any benefit in practice, but..?

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Old 08-11-2009, 07:37 PM
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Default RE: Twin engine speed planes

A sport-speed twin will never win a race against one of those German freight train types, I know. I have no illusions of 200 MPH with a sport engine, no matter how many how many of them you have. I also understand that two engines don't necessarily mean twice the speed because of several reasons. But twins are cool and if they both turn 18k or more, I think it's neat.

Sort of like the new Dodge Challengers. They'll never beat a funny car in the quarter mile, but I'd be OK with driving one around town...
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Old 08-12-2009, 01:24 PM
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Default RE: Twin engine speed planes

A few photos of twins here....

They were all very quick, but nothing approaching QM40 speed.

Dualist - pair of SJ50 engines

Ed Morman's Dusty Deuce - twin OS25 engines with jett-stream mufflers


I believe the "black monster" is what Ed was refering to. Eric and Dave did a heck of a job on the project. It did fly, flew well, flew fast. But as has been discussed here, it never really was as fast as everyone expected. Two engines and two props are more draggy than one. (aircraft was eventually sold without the engines)

Perhaps they will spur a few new ideas and new projects
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Old 08-12-2009, 02:49 PM
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Default RE: Twin engine speed planes

Im presently working on a GP Viper 500 twin.
2 x OS.55AX tune muffler, APC 9X10, 6 oz tank. It's already fast with one engine (alot faster on .55AX compare to a .46FX)

All mods, engine, servos... etc will add ±32oz.


In final, except the wing I will change or modified a lot of things (standard tail, bigger landing gear, bigger airframe...)
Pic will follow, when the project will comes to end.




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Old 08-12-2009, 03:07 PM
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Default RE: Twin engine speed planes

Bob, that is the one, the infamous "Boogie Board"

So it did fly then. The last I heard it took a dive into the ground at launch and needed repair.

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Old 08-12-2009, 07:16 PM
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Default RE: Twin engine speed planes

It never reached the designer intended potential...

One thing that ammused me was their launch technique. Get it runing and a person on each wing tip and swing it back and chuck it....
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Old 08-13-2009, 08:59 AM
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Default RE: Twin engine speed planes

here is one that just might fit your bill for those 32's. I have had a set of plans for awhile now and thought of a a couple hot engines and see what kind speed i could get. The design is by Dick Sarpolus and the plane is called the fifty caliber. WS 58 L 49.5 and designed for twin 25's. Plans for it are available at rcstore dot com. here is a pic of it. I always like the classic pattern look and this little twin apealed to me though i have yet to build one.
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