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Ergonomics (was: Flap switches/relay)

 
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gmcjetpilot(at)yahoo.com
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PostPosted: Fri Aug 25, 2006 12:52 am    Post subject: Ergonomics (was: Flap switches/relay) Reply with quote

Speed Brakes vs. Spoilers. If they are wind spoilers the kill lift in a big way and would be more of an issue than a body mounted speed brake.

I put the flap switch on my RV-4 stick grip (MAC grip). To reduce the chance of accidental deployment I cut the mini-toggle switch down very very short, so to operate, you put your thumb on top to move it. It was also spring loaded to up.

The MAC grip standard toggle switch lever, although small still got caught on things and caused accidental deployment. After cut down you still had to be careful and not rest things on top of the stick. The trim buttons where there and the PTT on the front.

I WILL NOT DO ALL THE BUTTONS ON THE GRIP ON MY NEW PROJECT.

My new project, RV-7 has the flap switch (and trim) on the panel near the throttle/prop/mixture. The wiring is way simple and the heavy duty flap switch can handle the flap motor with out troublesome relays.

George RV-4, RV-7


Quote:
Subject: RE: Ergonomics (was: Flap switches/relay
wiring)

Quote:
From: "Matt Prather" <[url=http://us.f300.mail.yahoo.com/ym/Compose?To=mprather(at)spro.net&YY 3673&y5beta=yes&y5beta=yes&order=down&sort=date&pos=0]mprather(at)spro.net[/url]>

Speed brakes are usually very small drag producers that provide energy
control while at high indicated airspeeds. Once slowed to a low
airspeed, speed brakes represent a very small portion of airframe drag.
Sometimes, takeoff performance isn't even particularly degraded with the brakes
extended.

Regards, Matt-


Get your own [url= http://us.rd.yahoo.com/evt=43290/*http://smallbusiness.yahoo.com/domains]web address for just $1.99/1st yr[/url]. We'll help. [url=http://us.rd.yahoo.com/evt=41244/*http://smallbusiness.yahoo.com/]Yahoo! Small Business[/url]. [quote][b]


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