|
|
Steve,
Re:
I was interested in the switch idea on the fuel pump. I have my auxiliary
pump on a switch, but my primary pump runs as long as the master switch is
on. I was concerned about having a switch on the main pump that could be
accidentally turned off in flight.
...
I may want to consider putting one on, though it would have to be located
where it wouldn't get shut off accidentally.
Only two practical methods of achieving that come to mind - one is to ward the switch(es) with "ears"; and the other is to mount the switch(es) in a recessed section of your panel, such that nothing much larger than a finger could get onto or behind the toggle arm.
Warding is pretty easy. Just buy some 3/4" aluminum channel stock and cut off about an inch - you shouldn't need more, you only have to ward one end of the throw, so you can drill the hole for the switch shaft off-center (lengthwise). Rocker switches are a little more trouble, as you have to cut a rectangular hole in the base of the channel (and you'll have to buy wider channel.
Of course, don't leave any corners on sharp edges to snag things on (such as your hide).
Another possibility is a variant of the fuel valves used by Marc and Nadine Parmelee:
http://www.marcnadine.com/fuelvalve.html
I'm thinking of adding a cam-operated switch to each control - valve open, pump is on; valve closed, pump is off.
Dale R.
COZY MkIV-R #1254
fuelswitch.jpg
fuelcontrols.jpg
|
|