How does it fly?

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Doran Jaffas

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I have sort of. Years ago. As a very young enthusiast back then I bought one and several months later met Bob Hovey at Oshkosh.
I only "flew" it in high speed taxi and ground effect. Even in cross winds it seemed to handle well. Needed to have a better engine. There are or is a youtube video of one flying.
There is one at the Battle Creek Aviation Museum here in Michigan..
 

BJC

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I have sort of. Years ago. As a very young enthusiast back then I bought one and several months later met Bob Hovey at Oshkosh.
I only "flew" it in high speed taxi and ground effect. Even in cross winds it seemed to handle well. Needed to have a better engine. There are or is a youtube video of one flying.
There is one at the Battle Creek Aviation Museum here in Michigan..
Thanks. The only video that I have seen is of straight line flight in ground effect.


BJC
 

plncraze

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So what was Bob Hovey like? He put out some interesting designs.
 

mcrae0104

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What is this ? Does it fly ?
That is a somewhat-recent version of a design I've been working on for a while. It has not flown. Project log here; discussion thread here.

General configuration and specs are about the same as I posted a couple of years ago in the project log. Performance will of course depend on the final engine selection.
 

mcrae0104

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You're thinking of the Polen Special, which some others have compared it to. There is a resemblance but the mission of this one is quite different.
 

Speedboat100

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Yes it does resemble remotely Polen Special, which was also hot ride. Yours does look better.

Your airfoil looks cool too, what is it ?
 

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mcrae0104

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Thanks. I haven't settled on a foil, but have been using a Riblett GA37-315 for now. The planform is just a plain old straight taper with a shaped tip, but I am working on a version that has a tapered center section and elliptical outer panels.
 

Lendo

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Riblett GA 35A 315 or any Riblett airfoil that meets the mission is a good choice. I believe Billski uses a GA 37A 315, and I'm designing with a GA 37A 415 for Light Sport considering stall speed. Orion liked them as well, I believe he said he had a lot of success with the GA 35A 415.
George
 

rv7charlie

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Anyone have flight experience with the Sadler Vampire or its derivatives?



BJC
"I know a guy"...who used to own one. :) Seriously, I saw it (one of the original Sadler ULs) in somewhat damaged condition in his garage, back in the late '80s before I started flying. It was sold shortly after, so I doubt that his memory of its flying qualities would be useful. That ebay link had some history I hadn't seen, and missed some more. At some point, a company exhibited one of the variations at SNF, powered with their in-house charge-cooled rotary engine. I think it was intended to be a marketing platform for their new engine. They faded quickly; I can't find any interwebs record of their existence.
 

BJC

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Thanks. The design intrigues me, along with the Song. I talked to a Song driver once, and only got an “it flies great” in response to some rather specific questions.


BJC
 

RogFlyer

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Hmm, it depends which Sadler Vampire you're talking about. In the early '80's I was flying into Wilton (a town in NSW, Australia) and there was one there, IIRC manufactured by a company in Wollongong that had bought the design. I don't know if it was based there, or just flying through - Wilton is not very far from Albion Park, where the manufacturer would have been based (and where there is currently quite a good aviation museum).

It was an astounding looking aircraft, and astonishing to me that such a tiny plane could fit a person and fly. Can still remember lining up behind it for take-off, and having to be reminded by the jump plane behind me to take off myself as I watched it lift off and disappear.

This is over 30 years ago, so memory could be dodgy here. I spoke to the pilot - he said it had similar performance and flying qualities to the Cessna 150 I was then flying. Somewhat lethargic in climb, very light controls, fairly docile but a marked tendency to drop a wing (the left?????) in a stall. Something, too, about good flying visibility and on approach, but blind forward in the flare, looking at one's feet.

Some years later, one crashed on final at Wilton with engine failure. No (severe?) injuries. I **think** this may have been a later model.

Also, IIRC, there was one at the RA-AUS airshow at Temora in 2013(?). It was complete, wings straight (not folded) and looked to be in good order. Don't know what model/engine or if it was in flying condition. I didn't see it move during the 3 day show.
 
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