View Full Version : In-Line Twin
05-17-2004, 12:24 PM
The Germans, in WWII, had an aircraft called the Donier DO-335. This was a push pull in-line twin aircraft. Cessna has a similar 337.
Anyone every play with this idea on a gyro?
05-17-2004, 01:59 PM
Hi, John. Here is a page about that plane. It's written in Portuguese.
Wing Cmdr Ken Wallis built and flew a gyro with two engines and propellers arranged in tandem (to circunvent some English law that prohibits operation of single engine aircraft over some british areas). I don't have further info, sorry.
05-17-2004, 04:14 PM
Sweet I like what you've done to it. make me one too.
05-31-2004, 06:30 PM
To see the Skymaster modified to a gyro, called the RevCon 6G, check out this site
At one time they had some more detailed pix (too large to send here) on their site, but I can e-mail you a copy direct if you want.
Keep 'em turnin'!
05-31-2004, 10:43 PM
The RevCon only had one engine though. The front one was replaced by a turbine and the rear one was removed to make way for a loading ramp. I saw it one time at Buckeye and posted some pics on the old Forum. I believe thay also flipped the tail.
06-01-2004, 10:18 AM
Ken Wallis has an in-line twin in his hangar. It has two Rotax 532s with, as I recall, the props mounted "spinner to spinner" (ie one's a pusher and one's a tractor).
It's a bit of an ISIBIDI (I See It But I Don't Believe It!) machine, I've got no idea how it flies or whether there is any benefit from the arrangement.
Come to Wallis Days in August and you'll get the chance to take a look.
06-01-2004, 11:03 AM
Here's a photo
06-01-2004, 02:23 PM
an other one:
06-02-2004, 10:55 AM
What is THAT?
06-02-2004, 11:24 AM
As I recall it is two 503s (top and bottom) connected to two props (one shaft inside the other), each turning a different direction (counter-rotating).
Anyone know why it wasn't seen again? Did it have some problem?
06-02-2004, 12:11 PM
What size props does wallace run on his rotax powered gyros??
06-02-2004, 06:47 PM
Nothing like taking a simple concept and malarkying it up. I should talk. Ken II, it probably wasn't seen again for the same reasons you don't see Edsels, Corvairs, Yugos or the Fairey Rotordyne cluttering up our roads and skies.......they just didn't work out so good.
06-04-2004, 01:39 PM
John, I believe that is a Gary Goldberry, Art Evans creation. As I recall, there was more than one iteration. One, if not all, was a three place machine.
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