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

High speed

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Old 11-18-2006, 10:34 AM
  #1  
Antique
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Default High speed

The fastest prop driven plane I know of is a Giant Scale NA50 race plane...Built by Fred French from a composite kit...Weighs about 32 lbs..Power is a much modified Quadra Aerrow 200cc twin turning a 25 or 26 pitch prop at about 10,000 rpm...Radar verified straight line speed is 245 mph...Anyone know of a faster prop driven plane ?
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Old 11-18-2006, 11:48 AM
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Default RE: High speed

Anything over .90 size doesn't count... [sm=devious.gif]

How much does it cost per mph...?
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Old 11-18-2006, 03:33 PM
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Default RE: High speed

Does that go gor a .91 too?

randy
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Old 11-18-2006, 09:15 PM
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Default RE: High speed

I'm with Rudeboy, the saying goes "speed cost money, how fast do you want to go?"

Well, I want to go fast on a "reasonable" budget. Heck, I'll even go to 1.20 size or more.

I want to get to at least Q40 speeds (preferrably faster ) with off the shelf stuff with at most a little modification.

Since most of us are not flying in competition events, we don't have to follow those stringent rules.


So what's a good way to get to 200mph for under $1K Lets just stick to IC engines w/ props for this thread.
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Old 11-18-2006, 10:55 PM
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Default RE: High speed


ORIGINAL: Airbike

So what's a good way to get to 200mph for under $1K Lets just stick to IC engines w/ props for this thread.
Delta Airlines?
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Old 11-19-2006, 01:40 AM
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Default RE: High speed

To do that your best bet is a Hot and high end engine and an inexpensive airframe like a diamond dust or something of the like. But 200 is gonna be a hard one to tap on a low low budget. If you like to design your own stuff it's a little different story, Thats what I like to do. The most important thing is a super clean airframe with high attention to detail, thats what cranks out the MPHs, I don't care how good your engine is.
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Old 11-19-2006, 01:53 AM
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Default RE: High speed

Home built plane with a Nelson .40 FAI should cost less than $1000 and go over 200.
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Old 11-19-2006, 10:08 AM
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Strykaas
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RCIGN1,

any picture of the bird ?
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Old 11-19-2006, 10:32 AM
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Default RE: High speed

If you like to design your own stuff it's a little different story
We all end up there some day . Find five fast planes you really like, do some research on why they are fast (aerodynamics, airfoils, etc), make a plane based on all five of them. Kit it, sell some, and use the money to fund your next project.

It's the circle of life.

Mods
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Old 11-19-2006, 12:58 PM
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Default RE: High speed

Hallo speedfreaks,

here is my BVM´91 driven speedplane. It is clocked at the German speed cup with a optical system after 200m straight flight with 229 mph.

Best regards Michael
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Old 11-19-2006, 01:02 PM
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Default RE: High speed

Hallo speedfreaks,

here is my Nelson 40 FI FAI engine driven speed 40 airplane. More than 250 mph.

Best regards Michaekl
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Old 11-19-2006, 01:08 PM
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F3D

Where did you get those airframes?
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Old 11-19-2006, 02:41 PM
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Default RE: High speed

Someone needs to import some of those planes from Germany, they look mighty impressive.
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Old 11-19-2006, 06:48 PM
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Default RE: High speed

yeah definately I would get one for sure.
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Old 11-19-2006, 07:04 PM
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Default RE: High speed

The bottom one is a Beretta 21. It was originally built by "Jet & Speed Models" from Holland, but I don't know if they still kit it... I have my doubts...

You could try [link=http://www.modellmotorentechnik.de/]Modellmotorentechnik[/link] to see if they still have some.

The top one with the BVM engine is pretty much purpose built... you are not going to see a kit of that thing.
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Old 11-20-2006, 01:54 PM
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Default RE: High speed


ORIGINAL: f3d

Hallo speedfreaks,

here is my Nelson 40 FI FAI engine driven speed 40 airplane. More than 250 mph.

Best regards Michaekl
Did you have an optical speed measurement on this airplane also?
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Old 11-27-2006, 08:57 AM
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Default RE: High speed

@ troy-RCU

The Speed of BVM91 driven one was exactly 357 km/h (221,8 mp/h) - average value of both direction with and againsted wind. That makes a huge difference compared to a measurement from only a single direction! I was part of the 'timing crew' and also built up the sensor boxes, so it's first hand information

The Beretta has not been measured in the Speedcup contest. Because Michael did not start with it. He used his Dago Innovation F3D racer. As far as i am informed the Beretta crashed on first flight a few weeks before the Speedcup.

Maybe he will start next year with this or a similar Beretta, to show that the 250 isn't a dream only....

best regards

Mario Roos
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Old 12-03-2006, 07:32 PM
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Default RE: High speed

I have a racer with a nelson fai if anyone wants to buy it.
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