Karp050555

If you fly scale, the engine reccomendations are ok. Fly scale.

foodstick

Lots of drag , a light wing loading,and a sudden rise in winds is a sad way to lose a plane.. Someone used to have a video on youtube of a guy TRYING to get a 1/4 Fokker D7 back to the field to land.. all he could do was fight the wind on approach until it fell into a tree on the end of the field..

Horsepoweraviation

My Feedback: (50)

V.G.,
LOL! ....There are people that do not like over powered WWI planes. I flew many WWI planes with marginal power and they can limit your flying....plus to me ...they can get boring only to be able to fly "scale". My thought several years back when I started the HPA movement, was to have a closer "scale size" prop for my WWI planes. With throttle management you now have TWO planes! When I am flying with someone like "Art Shelton" (who is the King of flying marginal powered planes) I can fly the whole flight with Art, side by side doing all the "mission style" flying. We have a great routine and I really enjoy that kind of flying for the spectators. And then there are times where it is just myself in the sky.......and those terrible words come out of my mouth...."Hey watch this!"....LOL! With a big engine and a huge scale size prop...you can do amazing stunts usually only reserved for "flip-floppers", way better ground handling, and 15-20 mph winds will not keep you grounded. The best "scale flying" plane I had was a 1/3 scale "BUSA Mic Camel" with a DA 150. That plane had a 36" x 8 prop on it! It only took 2 clicks fwd on the throttle to get it in the air and back to idle to get it on the ground. The prop rotation was so slow, it looked awesome in the air.

HPA

Karp050555

My fun comes when it's time to dogfight. That's when I turn on and become fearless. It's not about the stunts or tricks; it's about THE KILL!

vertical grimmace

My Feedback: (1)

Not to mention, these later WW1 aircraft were not marginally powered, as demonstrated by this full scale Fokker DVII with an original BMW engine. Being underpowered seems to be a tall tale. Of course, relative to everything that came after them, but they were still pretty fast for the time.

For those that have not flown their WW1 aircraft with a larger diameter prop, do your self a favor and set one up that way. They really do better with them.

https://www.youtube.com/watch?v=gZZ82xiWP7w

Karp050555

I did a little research and found with very few exceptions, the popular fighters of WWI had an average speed of 115 MPH. This being said, they were capable of basic flight plus dogfighting manuvers such as loops, immelmans, split s's, and stall turns. I really don't think they had the power or airframe strength to do advanced aerobatics like hovering, knife edge flight, or inverted flight. I like my WWI planes for their ability to fly scale and for their slow and easy landing speed. I can't think too fast anymore. If anybody is unhappy with their WWI planes because they can't break the sound barrier or do 3D manuvers, they're flying the wrong planes.

AMA 74894

My Feedback: (1)

MANY of those old airplanes with rotary engines including the DR1 had NO THROTTLE CONTROL (I'm sure I'm preaching to the choir )
just a magneto kill switch. I recall vividly the first time I ever attended the RC event at the Old Rhinebeck Areodrome asking my Dad why the triplane (among others) sounded so odd on final approach... I wonder how many scale purists would go THAT far

Karp050555

I know guys who are attempting to simulate that sound.

Corsair2013

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So you are saying that they would kill the engine on approach and glide in??

K

vertical grimmace

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Obviously the technology of the time was advancing very rapidly. The Fokker DR1 was in service for what.....9 months? The summer heat caused the Oberusels to seize because of the Ersatz (fake) oil.

So by 1918, the higher powered inline aircraft, which were bigger as well, drove the tripes and most of that mid era rotary type from the sky.

Of course these aircraft have an aerodynamic speed limiter. And anyone adding power to increase speed here is flying the wrong plane. But I agree that I would rather have a little extra, than not enough. Especially considering you have so much room to hide whichever size engine you wish.

Having had 2 DR1's , and a DVII, I feel I have the perfect engines in mine, to suit my tastes right now. A DLE 35 RA in the tripe, and a DLE 55 RA in the DVII. I am still looking for the right prop on my DR1.

I want to mention that I have experienced that torque roll on take off with my DVII. So you need to be careful and smooth with that left stick. It only happened once at a warbird meet. I got off track and was heading for the grass. I punched it to get off the ground quickly, and it dropped the wing. Only that one time, and I know better now. It occurred just before this pic wa taken. There is a video of it somewhere, and If I can find it, I will post it.

vertical grimmace

My Feedback: (1)

What they did was ground the ignition, essentially killing the spark. So they were basically turning them on and off. If you look at schematic drawings of the DR1, those tube holes on the side of the fuselage were the air intakes. These ran into the fuselage, to the carb. They were kind of like a rear intake venturi. Akin to a model speed or racing engine. But instead of controlling the fuel, they controlled the spark. YOu can only imagine how nasty the planes got with raw fuel pouring out of them at those times. Kind of crazy also to think that they were essentially flying at full throttle all of the time. What effects did that raw castor have on the pilots! : )

ARUP

Some of the rotaries were throttle-able to a degree. They used air and fuel mixture regulators. 'Blip' switches were used to 'kill' all or a limited number of cylinders, too, for 'throttle management'.
Talking about flying marginally powered airplanes and putting them in the tops of trees ... that's what I'm talking about as 'being honest' and etc. In conditions like that I would make (hopefully) proper decisions about the flying to be done. I, for one, certainly wouldn't fly down wind without going upwind, first, so that the model's performance could be evaluated. One thing that really helps me is flying scale sailplanes. You only get one chance at landing! So far my landings haven't been too shameful! Some were downright awesome!
I relish 'scale' flying. The slower it flies the more realistic it looks as far as these old timers are concerned.

Shoestring1958

Really enjoy reading the posts here. Been a BUSA fan for years, great quality kits and great people. Getting close to the end of a build of a Taube 90 kit from 1993. Will be the 4th kit from BUSA I have built and the first real kit build for me in 13 years. Its great to have found this group.

spaceworm

Because the cylinders rotated around the crankshaft (hence the name rotary engines) there was tremendous inertia in the rotating mass. This made it feasible to "blip" the sparks by grounding the ignition. Our engines, unless magneto with very large heavy props, will not continue to turn over without spark to allow the ignition to be turned back on intermittingly.

Merry Christmas to All and to All a Good Flight.

Sincerely, Richard

Shoestring1958

For sure I would like to be a member of this group.

Corsair2013

My Feedback: (2)

I learn something new everyday on this thread.......... Thanks!!

Keith

rickj

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Rich, I would like to join the brotherhooh--sign me up.

Thanks,
Rick Akron Ohio

wildbills21

Hey Paul(HPA),
The Camel is getting really close to the finishing line. I made some modifications. Now i only have 4 months of snow before I get to fly it.

Wild Bill

Karp050555

So where's the photos?

jwrich

My Feedback: (17)

Welcome Shoestring, your number is 96. Please post a pictutre of your progress on the Taube 90, we all would like to see your work.

It would be helpful for me if all BUSA Brothers would post their BUSA Brotherhood number in their signature. If I have missed anyone please let me know.

Merry Christmas to all
Rich
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rickj

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Hi Rich,

I would like to join the brotherhood.

Thanks, Rick Jacobs, Akron Ohio

Shoestring1958

Thank you for the add.

jwrich

My Feedback: (17)

Thanks for the picture. The Taube is a neat looking aircraft and I have heard that the BUSA Taube is a great flyer.

Rich

Shoestring1958

Thank you Rich, Still a ways to go yet.

jwrich

My Feedback: (17)

I would like to see more BUSA Flyers from around the world join our brotherhood. I know their are many out there.

Merry Chrismas
Rich