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1. 07:30 AM - Re: Checklist for a W8 (dmagaw@att.net)
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| Subject: | Re: Checklist for a W8 |
Well this is not a scientific or response backed with imperical data, but based
on what my 400+ hours in a W-8 and W-10 experience is:
VNE 0 MPH (you might check your rib stitching on your tailfeathers and fuselage
top. 1" spacing in the prop area is good for 200 MPH as I recall from the Polyfiber
manual, but if you have more spacing, then you might need to reduce this
speed accordingly.) Yes, others go faster in their tailwinds, but I believe
that the original W-8 plans stated a 180 MPH Vne and W-10 plans specified a
200 MPH Vne.
Flap actuation speed: 100 MPH or less. Actually small amounts of flap could be
added safely at about 120 MPH, but use the lower number for full flaps.
Take off speed: generally about 70 MPH, which is roughly 1.2 times stall speed.
This will vary some with weight as your stall speed also varies. Though it
will vary some with weight, the stall speed will vary from approximately 55 MPH
full flaps (Vso) to 60 MPH no flaps (Vs).
Vx is approximately 80-85 MPH
Vy is approximately 100-120 MPH
Best glide is approximately equal to Vy
Over the fence landing speed (no power on final into the flair) 80 MPH (light)
to 85 MPH (heavy) plus gust allowance. With power, you can go slower, but you
will drop like a rock when the power is pulled, unless well into ground effect.
I don't know what Va (manuevering speed) is, I just slow down significantly when
there is significant turbulance.
Vx and Vy will depend on your engine and prop pitch. The lower numbers are for
my W-8 with 150 HP and a 71 pitch prop. The higher numbers are for my W-10 which
has 160 HP and a 74 pitch prop.
All of the above is in MPH, you can convert of course to knots. The above is my
opinions and beliefs--others my differ in theirs.
Dave Magaw
-------------- Original message from "Curt" <curtc@consolidated.net>: --------------
I am wanting to create a preflight checklist for my C90 W8. In addition, I want
to mark my air speed indicator with green and yellow arcs, VNE, VSO, Flap speed
for 1 and 2 notches. Any insight would be greatly appreciated.
Thanks
Curt Crosby N7733
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<P>Well this is not a scientific or response backed with imperical data, but based
on what my 400+ hours in a W-8 and W-10 experience is:</P>
<P> </P>
<P>VNE 0 MPH (you might check your rib stitching on your tailfeathers and fuselage
top. 1" spacing in the prop area is good for 200 MPH as I recall from
the Polyfiber manual, but if you have more spacing, then you might need to reduce
this speed accordingly.) Yes, others go faster in their tailwinds,
but I believe that the original W-8 plans stated a 180 MPH Vne and W-10 plans
specified a 200 MPH Vne.</P>
<P> </P>
<P>Flap actuation speed: 100 MPH or less. Actually small amounts of
flap could be added safely at about 120 MPH, but use the lower number for full
flaps.</P>
<P> </P>
<P>Take off speed: generally about 70 MPH, which is roughly 1.2 times
stall speed. This will vary some with weight as your stall speed also
varies. Though it will vary some with weight, the stall speed will vary
from approximately 55 MPH full flaps (Vso) to 60 MPH no flaps (Vs).</P>
<P> </P>
<P>Vx is approximately 80-85 MPH</P>
<P>Vy is approximately 100-120 MPH</P>
<P>Best glide is approximately equal to Vy</P>
<P> </P>
<P>Over the fence landing speed (no power on final into the flair) 80 MPH (light)
to 85 MPH (heavy) plus gust allowance. With power, you can go slower,
but you will drop like a rock when the power is pulled, unless well into ground
effect.</P>
<P> </P>
<P>I don't know what Va (manuevering speed) is, I just slow down significantly
when there is significant turbulance.</P>
<P> </P>
<P>Vx and Vy will depend on your engine and prop pitch. The lower numbers
are for my W-8 with 150 HP and a 71 pitch prop. The higher numbers are
for my W-10 which has 160 HP and a 74 pitch prop. </P>
<P> </P>
<P>All of the above is in MPH, you can convert of course to knots. The above
is my opinions and beliefs--others my differ in theirs.</P>
<P>Dave Magaw</P>
<BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px
solid">-------------- Original message from "Curt" <curtc@consolidated.net>:
-------------- <BR><BR>
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<P classoNormal><FONT ial sizeface><SPAN font-family:Arial? styleont-size:10.0pt;>I
am wanting to create a preflight checklist for my C90 W8. In addition,
I want to mark my air speed indicator with green and yellow arcs, VNE, VSO,
Flap speed for 1 and 2 notches. Any insight would be greatly appreciated.<?xml:namespace
prefix = o /><o:p></o:p></SPAN></FONT></P>
<P classoNormal><FONT ial sizeface><SPAN font-family:Arial? styleont-size:10.0pt;><o:p> </o:p></SPAN></FONT></P>
<P classoNormal><FONT ial sizeface><SPAN font-family:Arial? styleont-size:10.0pt;>Thanks
<o:p></o:p></SPAN></FONT></P>
<P classoNormal><FONT ial sizeface><SPAN font-family:Arial? styleont-size:10.0pt;>Curt
Crosby N7733<o:p></o:p></SPAN></FONT></P></DIV></BLOCKQUOTE>
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