I'd love to hear why he chose to put the lifting surfaces on the gear instead of just going the Wren 460 route. As much of a hassle as the Wren/Peterson design was, the gear thing looks much less desirable.

Any guesses?

I'm also wondering about those wing ribs...lots and lots of chips, I'm betting better than half a ton of them....and why would that be better (other than speed of construction perhaps) than stamped? Surely a sinker could knock out all the stamping dies faster than milling all those billets. Too many customized stations?

The part count seems sky high...I can only imagine the fab and maintenance would be helicopter-level (the platform he appears to want to intrude on for LEO loitering in theory at least). But it would be interesting to see up close.

With 50 hours he must know the numbers really well. It will be interesting to see what they are.

lesuther wrote:I'd love to hear why he chose to put the lifting surfaces on the gear instead of just going the Wren 460 route. As much of a hassle as the Wren/Peterson design was, the gear thing looks much less desirable.

Any guesses?

I'm also wondering about those wing ribs...lots and lots of chips, I'm betting better than half a ton of them....and why would that be better (other than speed of construction perhaps) than stamped? Surely a sinker could knock out all the stamping dies faster than milling all those billets. Too many customized stations?

The part count seems sky high...I can only imagine the fab and maintenance would be helicopter-level (the platform he appears to want to intrude on for LEO loitering in theory at least). But it would be interesting to see up close.

With 50 hours he must know the numbers really well. It will be interesting to see what they are.

I believe he covers his thoughts on the gear here : https://youtu.be/OxmAvOBNbUs

Scrappy is insane, can't wait to watch it operate in the bush. Glad I got to see it in person at Osh.

What Patey does is simply amazing! I thought Draco was really cool and enjoyed watching the build and him flying it.

I’ve kind of fallen off the Scrappy bandwagon, though. It’s too difficult for me to relate to. That isn’t a criticism of him, he’s not building nor making videos to entertain _me_!

As mediocre - if not poor - as my engineering insight is, I can’t with any meaningful weight say anything about Scrappy. But to those who knows more than me, I’d like some opinion on the complexity of it all. Could you get the same performance from a simpler construction?

I’m very glad there’s people like him working on projects like Draco and Scrappy. If nothing else, they are an inspiration and their projects great tech-platforms!


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Scrappy is an interesting means to put a Lycoming IO-720 to use. It's obviously not really a STOL competitor, and he's "selling" it as search and rescue platform. Good for him, if that works out. It'll be interesting if he can convince agency personnel (including volunteers) to fly SAR in a one off, home designed experimental aircraft. Those sorts of agencies are pretty risk averse, so I have my doubts. But, I'm sure he'll be able to find volunteer "observers" on his own in any case.

So, good for him. I too think it's purely astounding how quickly he took this thing from concept to a flying aircraft. That says something about the man, indeed.

To me, it's kinda interesting, but I've never had the patience to watch one of his videos all the way through, and that aspect of it doesn't interest me at all.

I certainly wish him well. I have the utmost respect for ANYone who builds their own airplane, let alone one who designs AND builds their own airplane(s).

So, good for him, I sincerely hope the plane turns out to be whatever he intends it for.

MTV

mtv wrote:Scrappy is an interesting means to put a Lycoming IO-720 to use. It's obviously not really a STOL competitor, and he's "selling" it as search and rescue platform. Good for him, if that works out. It'll be interesting if he can convince agency personnel (including volunteers) to fly SAR in a one off, home designed experimental aircraft. Those sorts of agencies are pretty risk averse, so I have my doubts. But, I'm sure he'll be able to find volunteer "observers" on his own in any case.

...

To me, it's kinda interesting, but I've never had the patience to watch one of his videos all the way through, and that aspect of it doesn't interest me at all.

...

MTV

If you did watch his videos you'd know that he has no plans to produce or market this to any agency for SAR. He and his brother do local SAR with their Carbon Cubs and his Bell Jetranger already for the local law enforcement agencies. I think he has stretched the explanation of many of the items as for SAR, but in the end he just made an airplane with as many of the interesting ideas he has had just to see if he could do it and if they would work.

-Solar panels on wings and hundreds of pounds of batteries with an inverter?? Crazy. He explains that this could be used to power a welder, but he mainly did it to charge electric dirt bikes that he maid special hard points on the wing for...
-drooping ailerons with double slotted flaps and double slats that all move together. Mechanism overload, but cool.
-adjustable gear height for better visibility when taxiing and lower AOA when tied down, I like that one. But I have a Cessna 170 so I can already see forward when I taxi
-parachute... I guess he can handle the weight.
-5 Garmin screens for the pilot. Insane and not necessary, but Garmin made it work for him so he could advertise.
-NOS??? come on, really? I love it.

I will also admit the name Scrappy is completely misguided. He started with a used frame and engine. Everything else is one off brand new.

That is just the start of a list. He admits this is never a plane that could be produced, but as a mechanical engineer I love seeing the innovation and his work ethic. Watching his videos makes me want to get off my butt and go build an RV like I've been talking about for years.

Every time I see something about Scrappy,
the Sherpa comes to mind.
Whatever happened with that design?

hotrod180 wrote:Every time I see something about Scrappy,
the Sherpa comes to mind.
Whatever happened with that design?

Several things, but the big one is the designer passed away. The biggest issues they had was finding a reliable engine of appropriate size for the aircraft. They originally used an IO 720, like Patey has, but those engines are scarce and all are old, and it really didn't have enough power. So, they went with a turbine.....bring LARGE dollars.

But, one of the beauties of the Experimental Home Built category is that a builder can follow and express what HE or SHE wants to build. It may or may not be attractive to others and it may not be very utilitarian, but that's fine.

MTV

"But, one of the beauties of the Experimental Home Built category is that a builder can follow and express what HE or SHE wants to build. It may or may not be attractive to others and it may not be very utilitarian, but that's fine."
That was our goal when Dad and I built Bearhawk #357 with the Landrover engine. We did it because we wanted to, not for any other reason. We completely designed and built the firewall forward end of it including the PSRU. It was for us period. It had similar power and performance to an io-540. my current project is along the same line, putting the LS3 in a C175. It is not for everybody but I enjoy it

I would love to see Mike’s wing design on a turbine Sherpa!

Mike Patey is an absolute genius with a go get it done attitude I could only dream of. Scrappy’s construction is seriously next level and his videos had me in awe. He’s definitely what general aviation needs to excite and invigorate the younger generation I believe.

Jetcat,
Is there an online forum that you have not unnecessarily input your opinion of the norden on? This is a scrappy thread, when you buy, or fly, or actually see one of your preferred airplanes please post a new thread about it, we would love to get an actual hands on review of it.
Thank you

That wasn’t very friendly.

Johntoo wrote:Nope, not a troll, just a realist. I heard about these guys, and decided to take a look at them and check them out. What I saw was a bunch of ACs flying together in what some would call a gaggle f---. They were, and probably still are, a midair accident waiting to happen. I know that because of my training. The appellation 'cowboy' applied to a pilot in my old life meant someone who flew with little regard for the rules, and common sense. And then i hear about the crash, and watched the video - you should too. No regard for the rules or common sense to try to take off as he did. Very lucky he's still around, i know some who aren't. And now I hear him referred to as a gift to aviation. Holy S! Worship him if you want, but don't do what he does if you care about your hide.

As a neutral observer, let’s hear the resume this set of opinions comes from, and we can judge you and your opinion’s worth. Just as you’ve judged Mike Patey from a distance.

I salute anyone willing to take a chance, and try new things. Was the takeoff a bad idea? Sure it was and he’s the first to tell you. I don’t canonize Patey, but I respect his adventurous spirit and what he’s built. Some of it is even fun to watch.

Have yourself a good day, and try not to judge so readily. It’s something I’m still learning too.