# Wittman Buttercup - Anyone bought the plans and started it?

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#### tysonb

##### New Member
Ok, I've been reading everything I can find on Earl Luce's take on the Buttercup - not a whole lot out there... I've emailed Earl and Aircraft Spruce so I know the plans and the kits are availiable, but it concerns me that there is only one (Earl's) actually flying.

I like the design, moderate low cost, and I think the construction is within my talents (I've refurbished 3 old fords and rebuilt one from the ground up) but it would still be a great learning experience. If the numbers are accurate its quite the performer with 100hp... I think it would be a good platform for a Corvair...

Anyone out there building one? I can't find a single builders log online, so I can only assume the 100+ plans Earl told me he's sold are either gathering dust or all the builders are sooo dedicated to the build they're sleeping in they're garage. My biggest concern is lack of a "builders network" like some of the more popular (and even some of the unknowns) have.

I'm also open to suggestions for other planes I should look at. I'm lusting after an RV-10 (who isn't), but I'm looking for a "starter" design - kit or plans built. Here's what I'd like to find:

Wally

#### buttercupairplane

##### New Member
BUttercup builder here!

The buttercup is an awesome plane and shoud be a great performer on a C-85.

I am building one. I have two sides of the fuselage built, started the tail feathers and have built a wing rib jig. The plans are easy enough to follow, although there are some real head scratchers because not all of the measurements add up like they should...A quick call or email to Earl straightens them out however. 700 hrs is no where near what it will take to build unless you are a good welder. (I am not, so things are taking a lot longer than they should.)

I too am considering the corvair, but would like to find a nice cheap C-85 as this is what it was designed around.

Wittman used the BC for a test bed for a lot of what went into the Tailwind and was certified to be built commercially if I am not mistaken. But plans for that were cancelled by WWII. Apparently all who flew it were impressed...the original flew for 50 ish years without a problem. For this reason alone, and the fact the tailwind was based on it is reason enough for me to build one...besides, I think it looks pretty darn neat too! (or ugly depending on who you are).

I am shooting for the LSA category and will eliminate the LE flaps and use a climb prop to keep it within LSA limitations. If you have any questions about it, please let me know.

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#### planecrazzzy

##### Well-Known Member
I have a Buttercup site... and also have a building log with LOTS of detail
I can't just paste the address's... I'm on a different computer...
The buttercup "Group" ( Yahoo ) is Buttercup/STOL

I have a lot of pictures and details at "Wings Forum" in the Wittman section

But at that forum, you must register...Or the picture just don't show

I don't know why....

Gotta Fly...
Mike & "Jaz" in MN
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.Oooooops... Just saw this was an OLD POST...

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#### mcjon77

##### Well-Known Member
.Oooooops... Just saw this was an OLD POST...
Don't worry.

I'm glad you posted. I'll see if I can find the buttercup group and hopefully your build log on the net.

#### Merlin_FAC

##### Member
William Wynne (the Corvair guru) is working on a Corvair-powered Buttercup right now. His website is www.FlyCorvair.com - Home of the Recognized Authority on Corvair Powered Flight - last I looked (5 mins ago) the bottom said "Buttercup coming soon" but no webpage on it just yet. He's said a few things in various "Hangar" pages... check out March 2009 At The www.FlyCorvair.com Hangar - scroll about halfway down, or August 2008 At The www.FlyCorvair.com Hangar (2/3 down), March 2008 At The www.FlyCorvair.com Hangar (it's the "mystery project" 1/3 down the page). Hope this helps...

#### planecrazzzy

##### Well-Known Member
I heard William bought a Buttercup that was Half way built...

So it shouldn't take him too long.... I saw that same post

at his website a LOOONG time ago.... Guess he doesn't keep it up.

Gotta Fly...
Mike & "Jaz" in MN ( Building BC )

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