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

1930's racers

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Old 09-19-2009, 01:33 PM
  #1  
jeffk464
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Default 1930's racers

I love the looks of 1930's era racers and thought I would try to design one loosely based around Q500 dimensions with a Q500 wing. My goal was for sport/fun scale, simple construction, with fast sport performance on a 40 sized sport engine. Its going to look kind of stretched out because I'm trying to keep frontal area down, I pretty much set the height and width based on the dimensions of a 55AX engine. Anyways interested in input/critiques.
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Old 09-19-2009, 03:50 PM
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Default RE: 1930's racers

I noticed that tower hobbies has a control line plane with about the exact dimensions(2 1/4" x 4") I'm looking for. Maybe I should build the front to fit this cowling perfectly, its probably a more stream lined front end than I can do on my own. Actually that whole plane is kind of very similar to what I want the model to be like, only with a Q500 wing and 1930's racer profile.
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Old 09-19-2009, 09:30 PM
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Default RE: 1930's racers

Here is one I built from MA plans that uses a .25. It runs in the low 100s with a .25FX. It's a pretty cool little plane. This picture is quite old but the plane is still fine.[8D]
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Old 09-19-2009, 10:10 PM
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Default RE: 1930's racers

thats a slick looking plane vicman, one our club members has a 60 size version with a 91 OS engine on floats its 125mpph range plane, flies like its on rails
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Old 09-19-2009, 10:42 PM
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Default RE: 1930's racers

His is a kit, mine is built from plans if I'm thinking of the same one. I've seen a few of those 60 size models around. Mine flies just like you said. It's not all that aerobatic but it really grooves around the poles and turns heads for a little .25. The build article is from 1982 I think, and was designed to run with the new (at the time) Q40 class. I had to add some carbon fiber rod struts to the horizontal as well as strengthen the elevator after it snapped during a fun race. Luckily I was able to get it back on the ground with only half the horizontal and elevator since one side ripped itself off in a turn. [X(]

I got my best speed with an MVVS .28 as testing and going for all out speed progressed. It was a pretty easy build overall. In fact I think I still have a fuse side frame laying around where I stupidly built two of the same side over the plan. Man was I mad at myself for wasting all that spruce! [:@]
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Old 09-20-2009, 09:47 AM
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Default RE: 1930's racers

jeffk, What size engine will that cowl hide?
Thanks Rob
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Old 09-20-2009, 09:51 AM
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Default RE: 1930's racers

Keith Ryder Racer - Jack Rabbit
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Old 09-20-2009, 10:01 AM
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Default RE: 1930's racers

French Caudron
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Old 09-20-2009, 12:53 PM
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Default RE: 1930's racers

Gee, I feel like such a hack now. Great looking planes Rob.

Are those your own plans or from somewhere?
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Old 09-20-2009, 05:48 PM
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Default RE: 1930's racers

Wow, perfect. Those planes are exactly what I was going for. The cowling fits up to a .46 size engine.
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Old 09-21-2009, 10:34 AM
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That French Cauldron is gorgeous. The wing is tapered which really isn't what I'm going for, but wouldn't that be the perfect airframe to base a Q40 off of. It seems like the design allows you to cowl up the cylinder head and improve stream lining. Am I missing something here. By the way, that plane gives me a nice new wallpaper for my laptop.
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Old 09-21-2009, 11:59 AM
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Default RE: 1930's racers

Sorry about the photos, I always wondered how people got the big photos inserted and now I do it by accident?

Any way the Jack Rabbit (brother of Eight Ball and Firecracker) is a ARF by HET in Holland. I have an inverted MPJet .061 diesel inside.

[link=http://www.rcuniverse.com/forum/m_7283054/mpage_1/key_/tm.htm]Jack Rabbit[/link]

The Caudron is a glass fuse/ foam wing by JM Glasscraft with the same little 1cc Czech Diesel I affectionatly refer to as my fastest diesel - spinning a 4.75x6.25 prop.
I have plans to do another Caudron with a piped Picco .8cc glow

[link=http://www.rcuniverse.com/forum/m_8014926/mpage_1/key_/tm.htm]Caudron C-460 Rafale[/link]

A video link near the end of the thread

I want to do a Fokerts Racer a bit larger for a hot 2.5cc - .15" Team Race Diesel Engine.
I have a set of plans but might need to upsize it a bit and increase the wingspan/area.
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Old 09-21-2009, 05:30 PM
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Default RE: 1930's racers

I feel much better now knowing my plan built is being compared to an arf
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Old 09-21-2009, 06:26 PM
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Default RE: 1930's racers

this would be a great one design racer, wish someone had a mold for the fuse in 40-60 size[8D]
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Old 09-23-2009, 06:57 AM
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Default RE: 1930's racers

Here is the Fokkerts SK-3 Jupiter

short stubby wings to an extreme[8D]
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Old 09-23-2009, 05:12 PM
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Default RE: 1930's racers

Looks like a clipped wing Beech [8D]
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Old 09-23-2009, 11:50 PM
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"this would be a great one design racer, wish someone had a mold for the fuse in 40-60 size"


Yup, so many cool planes out there and all we see is the same old planes at the field everytime, mustangs and extras.

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Old 09-24-2009, 07:11 AM
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ORIGINAL: RocketRob
I want to do a Fokerts Racer a bit larger for a hot 2.5cc - .15'' Team Race Diesel Engine.
I have a set of plans but might need to upsize it a bit and increase the wingspan/area.
[8D]

Hey Rob - I have a KMD team race diesel that runs like a bear on an 8-6 prop, meaning it should do the same on smaller and pitchier too. I've been thinking about a home for it for a while, and of course it has to be something "different", otherwise I'll use an FP..

It has an intake bore of about what, 0.005" or so, no wait, about 1/8", and I know diesels don't need the throat size but I bet there is a lttle less economy and a bit more power to be had. It's skinny too, so the fuselage can border on anorexic and still fit.

Mike aka MJD
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Old 09-24-2009, 07:12 AM
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Default RE: 1930's racers

ORIGINAL: jeffk464

That French Cauldron is gorgeous. The wing is tapered which really isn't what I'm going for, but wouldn't that be the perfect airframe to base a Q40 off of. It seems like the design allows you to cowl up the cylinder head and improve stream lining. Am I missing something here. By the way, that plane gives me a nice new wallpaper for my laptop.

What engine is in that I wonder? Gypsy Major? Has the right number of stacks. [EDIT - no dummy, it went 505 kph.. it's a Renault Bengali]

Beautiful airplane!

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Old 09-24-2009, 07:18 AM
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ORIGINAL: RocketRob
Sorry about the photos, I always wondered how people got the big photos inserted and now I do it by accident?
Do you have Corel photo paint or the like? I use Photopaint, and the "resample" function allows you to set the dimensions. I use my son's camera all the time, and before I knew the little I do know about picture sizing, I figgered you just post them. Turns out he has his camera set for about 2'x3' shots, and I didn't know when you post them they come out big too - the reaction to my first RCU picture posting was kinda funny, mostly "post #%$#$&^ smaller pictures dumbass!". If-n-when I remember to set the camera to "VGA" I can upload and post pictures directly.

So... folks like these things eh? Always looking for kit design ideas.

MJD


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Old 09-24-2009, 07:24 AM
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Default RE: 1930's racers

Lots of ideas here:

[link=http://www.airracinghistory.freeola.com/index.htm]Record breakers[/link]

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Old 09-24-2009, 06:13 PM
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MJD, Lots of stuff to respond to here, but then I know I owe you another as well

The Team Race Diesel - they use smaller ventruis to minimize the fuel burn. I had a few of the Fora junior/pioneers which had a 3.4mm venturi spinning a 7x6 around mid 15's after I drilled one out with a #1 drill bit it would do 16,900 on the same prop.

On the photos, I have always left my camera on max resolution and they would load up small and normal, so I think something was off on the RCU software when I loaded these two.
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Old 09-24-2009, 08:58 PM
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No worries Rob, just my morning three mugs of tea trying to wake up babbling..

I've had many fleeting thoughts about these '30's-ish era aircraft and how they would transition into neat models, whether somewhat scale or just as inspiration for a design.

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