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Old 01-09-2013, 07:53 PM   #16816
Klay
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Tupolev ANT-20. Working on the other one.
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Old 01-09-2013, 07:57 PM   #16817
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Originally Posted by Mudflaps View Post


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Old 01-09-2013, 08:02 PM   #16818
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Old 01-09-2013, 08:06 PM   #16819
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Old 01-13-2013, 08:02 PM   #16820
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Old 01-13-2013, 08:15 PM   #16821
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Old 01-13-2013, 08:16 PM   #16822
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Old 01-13-2013, 08:33 PM   #16823
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Originally Posted by Klay View Post
I remember reading about this project. Counter rotating props.. twin inline-engines. The crazy prop design was so he didn't have to run gear reduction and could stick the propellers straight on the engines so they'd turn at engine speeds and then he could change their pitch on the fly.

Some American Airlines pilot in Texas is/was building this thing to try and break Rare Bear's world speed record for a piston driven aircraft. Any idea if he ever flew it?

I went to the Reno Air Races several times in the late 90s. The sound of Rare Bear going by at 500+mph was a sound I'll never forget.
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Old 01-13-2013, 08:41 PM   #16824
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Old 01-14-2013, 06:50 AM   #16825
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You know, it's strange... I don't normally appreciate pieces of mechanical art that don't work, but even if this thing never flew I would absolutely love it anyway.
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Old 01-14-2013, 10:39 AM   #16826
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It's called an RP-4 and it's powered by two Dodge Dart V-8s. The prop tips will break Mach 1. Shades of Thunderscreech.

http://www.popularmechanics.com/tech...eir-own-planes

http://www.coonfield.net/blog/2007/0...reaker-rp4.htm
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Old 01-14-2013, 12:47 PM   #16827
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It's called an RP-4 and it's powered by two Dodge Dart V-8s. The prop tips will break Mach 1. Shades of Thunderscreech.

http://www.popularmechanics.com/tech...eir-own-planes

http://www.coonfield.net/blog/2007/0...reaker-rp4.htm
On that one, the valve covers look an awful lot like big block Chevys.
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Old 01-14-2013, 12:52 PM   #16828
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On that one, the valve covers look an awful lot like big block Chevys.
The engines are a take off from the bigblock Chevy, made by http://www.dartheads.com/
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Old 01-14-2013, 12:54 PM   #16829
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Tupolev ANT-20. Working on the other one.
ANT-20bis variant, to be precise. The first ANT-20 had a different engine / propeller combo.
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Old 01-14-2013, 05:36 PM   #16830
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