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curtc(at)consolidated.net
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 Posted: Mon May 22, 2006 7:44 pm Post subject: Checklist for a W8 |
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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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dmagaw(at)att.net
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| Posted: Tue May 23, 2006 6:30 am Post subject: Checklist for a W8 |
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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 | Quote: | -------------- Original message from "Curt" <curtc(at)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.<?xml:namespace prefix = o />
Thanks
Curt Crosby N7733
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