Today's Message Index:
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1. 09:00 AM - Re: Tailwind-List Digest: 0 Msgs - 12/20/13 (fjmelick@aol.com)
2. 11:13 AM - Re: Re: Tailwind-List Digest: 0 Msgs - 12/20/13 (Gerry van Dyk)
3. 11:45 AM - Re: Re: Tailwind-List Digest: 0 Msgs - 12/20/13 (George Turner)
Message 1
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| Subject: | Re: Tailwind-List Digest: 0 Msgs - 12/20/13 |
Can the W-10 fit the LSA category if I use an 85 hp continental the same as
the original W-8?
Is the stall speed of the w-10 wing lower than the w-80 wing?
Thanks Fred M
-----Original Message-----
From: Tailwind-List Digest Server <tailwind-list@matronics.com>
Sent: Sat, Dec 21, 2013 3:10 am
Subject: Tailwind-List Digest: 0 Msgs - 12/20/13
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Message 2
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| Subject: | Re: Tailwind-List Digest: 0 Msgs - 12/20/13 |
Hi Fred. The question has been asked here many times. Keep in mind the
Tailwind is a serious hot rod, even with low power. That's the way Mr.
Wittman designed airplanes, and the legacy is celebrated by the this
group's
members. It's a little like asking if you can make a Shelby Cobra into
a
slow car.
Have a look at other light sport airplanes that push up to the full 1320
lb
weight limit. They're typically around 130 square feet of wing area,
the
W-10 is 100 square feet. My quick calculations show that it would have
to
be built somewhere around 950 pounds max take weight to make the maximum
stall speed. That's a big ask with the existing airplane.
You could re-work the design with a larger wing, a different airfoil,
lighter wing without plywood sheeting, (dual wing struts needed) etc.
Then
again it's already been done for you. Wittman's earlier design the
Buttercup is already LSA compliant. Earl Luce sells the plans.
http://luceair.com/replica_buttercup.html
The lines aren't quite the same as the Tailwind, but you could easily
make
the same changes to the lower longerons, top forward tubes and cowl that
Jim
Clement has made. His Buttercup looks a great deal like a Tailwind.
http://groups.yahoo.com/neo/groups/TailwindForum/conversations/messages/5
653
2
For the most part, those who have asked your question here before appear
to
have no interest in doing a Buttercup but it's by far the best way to
go.
It's highly impractical to make the Tailwind stall slow enough and keep
it's
top speed within the regs. Speed is determined by the airframe much
more
than the horsepower.
I hope this helps your deliberations.
Gerry
-----Original Message-----
From: owner-tailwind-list-server@matronics.com
[mailto:owner-tailwind-list-server@matronics.com] On Behalf Of
fjmelick@aol.com
Sent: December 21, 2013 10:01 AM
Subject: Tailwind-List: Re: Tailwind-List Digest: 0 Msgs - 12/20/13
Can the W-10 fit the LSA category if I use an 85 hp continental the same
as
the original W-8?
Is the stall speed of the w-10 wing lower than the w-80 wing?
Thanks Fred M
-----Original Message-----
From: Tailwind-List Digest Server <tailwind-list@matronics.com>
Sent: Sat, Dec 21, 2013 3:10 am
Subject: Tailwind-List Digest: 0 Msgs - 12/20/13
*
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two Web Links listed below. The .html file includes the Digest
formatted
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and Message Navigation. The .txt file includes the plain ASCII version
of the Tailwind-List Digest and can be viewed with a generic text editor
such as Notepad or with a web browser.
HTML Version:
http://www.matronics.com/digest/digestview.php?Style=82701
<http://www.matronics.com/digest/digestview.php?Style=82701&View=html
&Chapte
r 13-12-20&Archive=Tailwind>
&View=html&Chapter 13-12-20&Archive=Tailwind
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<http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&
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&View=txt&Chapter 13-12-20&Archive=Tailwind
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Message 3
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| Subject: | Re: Tailwind-List Digest: 0 Msgs - 12/20/13 |
The stall speed is a little slower with the W 10 wing, but not even close t
o the- landing speed needed to qualify.- The Buttercup- can qualify.
- George=0A=0A=0A=0AOn Saturday, December 21, 2013 12:18 PM, Gerry van Dy
k <gerry.vandyk@shaw.ca> wrote:=0A =0AMessage =0AHi =0AFred.- The questi
on has been asked here many times.- Keep in mind the =0ATailwind is a ser
ious hot rod, even with low power.--That's the way =0AMr. Wittman desig
ned airplanes, and the-legacy is-celebrated by the =0Athis group's memb
ers.- It's a little like asking if you can make a Shelby =0ACobra into a
slow car. =0A- =0AHave a =0Alook at other light sport airplanes that push
up to the full 1320 lb weight =0Alimit.- They're typically around 130 sq
uare feet of wing area, the W-10 is =0A100 square feet.- My quick calcula
tions-show that it would have to be =0Abuilt somewhere around 950 pounds
max take weight to make the maximum stall =0Aspeed.- That's a big ask wit
h the existing airplane. =0A- =0AYou =0Acould re-work the design with a l
arger wing, a different airfoil, lighter wing =0Awithout plywood sheeting,
(dual wing struts needed) etc.- Then again it's =0Aalready been done for
you.- Wittman's earlier design the Buttercup is =0Aalready LSA compliant.
- Earl Luce sells the plans. =0Ahttp://luceair.com/replica_buttercup.html
=0A- =0AThe =0Alines aren't quite the same as the Tailwind, but you coul
d easily make the same =0Achanges to the lower longerons, top forward tubes
and cowl that Jim Clement has =0Amade.- His Buttercup looks a great deal
like a =0ATailwind. =0Ahttp://groups.yahoo.com/neo/groups/TailwindForum/co
nversations/messages/56532 =0A- =0AFor =0Athe most part, those who have a
sked your question here before appear to have no =0Ainterest in doing a But
tercup but it's by far the best way to go.- It's =0Ahighly impractical to
make the Tailwind stall slow enough and keep it's top =0Aspeed within the
regs.- Speed is determined by the airframe much more than =0Athe horsepow
er. =0A- =0AI hope =0Athis helps your deliberations. =0AGerry =0A- =0A
=0A>-----Original Message-----=0A>From: owner-tailwind-list-server@matronic
s.com [mailto:owner-tailwind-list-server@matronics.com] On Behalf Of fjmel
ick@aol.com=0A>Sent: December 21, 2013 10:01 AM=0A>To: tailwind-list@matron
ics.com=0A>Subject: Tailwind-List: Re: Tailwind-List Digest: 0 Msgs - 12/2
0/13=0A>=0A>Can the W-10 fit the LSA category if I use an 85 hp continenta
l the same as the original W-8? =0A>=0A>Is the stall speed of the w-10 win
g-lower than the w-80 wing? =0A>=0A>Thanks Fred M =0A>-----Original Me
ssage-----=0A>From: Tailwind-List Digest Server =0A <tailwind-list@matroni
cs.com>=0A>To: Tailwind-List Digest List =0A <tailwind-list-digest@matroni
cs.com>=0A>Sent: Sat, Dec 21, 2013 3:10 =0A am=0A>Subject: Tailwind-List D
igest: 0 Msgs - 12/20/13=0A>=0A>=0A>* Online Versions of Today's List Diges
t Archive Today's complete Tailwind-List Digest can also be found in either
of the =0Atwo Web Links listed below. The .html file includes the Digest
formatted =0Ain HTML for viewing with a web browser and features Hyperlinke
d Indexes =0Aand Message Navigation. The .txt file includes the plain ASCI
I version =0Aof the Tailwind-List Digest and can be viewed with a generic t
ext editor =0Asuch as Notepad or with a web browser. HTML Version: http://
www.matronics.com/digest/digestview.php?Style=82701&View=html&Chapter
13-12-20&Archive=Tailwind Text Version: http://www.matronics.com/dig
est/digestview.php?Style=82701&View=txt&Chapter 13-12-20&Archive=
Tailwind ======================
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es Posted Fri 12/20/13: 0 -------------------------------------------------
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lectric.com=0A" target="_blank">www.buildersbooks.com=0A="_blank">www.h
omebuilthelp.com=0A="_blank">www.mypilotstore.com=0Aank">www.mrrace.com
=0A_blank">http://www.matronics.com/contribution target="_blank">http://w
ww.matronics.com/Navigator?Tailwind-List=0Atp://forums.matronics.com =0A>hr
ef="http://www.aeroelectric.com">www.aeroelectric.com=0Ahref="http://ww
w.buildersbooks.com">www.buildersbooks.com=0Ahref="http://www.homebuilthe
lp.com">www.homebuilthelp.com=0Ahref="http://www.mypilotstore.com">www.my
pilotstore.com=0Ahref="http://www.mrrace.com">www.mrrace.com=0Ahref="ht
tp://www.matronics.com/contribution">http://www.matronics.com/chref="http
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