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Brake Line Needle Valves

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I present this just in case you have not heard about this wonderful little mod. My thanks to Huston Marlowe for the idea.

Pictured below is a 1/4" NPT brass Edelman needle valve, part 427420. It's easily installed below each brake reservoir. Having a pair of these means you'll probably never have to bleed and pressurize your Goodyear brakes from the bottom again. That messy little chore is eliminated. To slightly pressurize each brake system and achieve a perfect "hard" pedal, just depress the brake pedal slightly and, while holding the pedal, close the needle valve. Release the pedal. Remove the reservoir plug and top off. Reinstall the plug, open the valve, and you're all done. Couldn't be easier. Weight added to the aircraft: a few ounces, and well worth the addition.

You can shorten the wire handles a little to clear the floorboards, if necessary. You won't need to trim much. Install the valve so that it faces forward. A tool can be made to actuate the valves out of an old nut driver, but I find it's easy to open and close the valves with my finger tips as they spin easily. Don't forget to open the valves after service, or you won't have brakes.

This appears much larger in the photo than it actually is.

s-l400.jpg
 
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