http://www.europaowners.org/gallery2/v/Europa064-914-mono-FergKyle/Fergs+home+grown+battery+switches/ en-us Gallery 2 RSS Module, version 1.1.8 Mon, 20 Apr 2026 11:41:21 +0000 120 http://www.europaowners.org/gallery2/d/78497-6/Fergs+home+grown+battery+switches.jpg http://www.europaowners.org/gallery2/v/Europa064-914-mono-FergKyle/Fergs+home+grown+battery+switches/ http://www.europaowners.org/gallery2/v/Europa064-914-mono-FergKyle/Fergs+home+grown+battery+switches/BATTYswBOARD1-DSCF0862.JPG.html http://www.europaowners.org/gallery2/v/Europa064-914-mono-FergKyle/Fergs+home+grown+battery+switches/BATTYswBOARD1-DSCF0862.JPG.html
Just some info Ferg included in an E-Mail:
"Did I say that Jenny has announced that the fuselage must be out of the spare bedroom by 30JUN2010 or I’ll be a bachelor on ½-pay by 01JUL2010?
It HAS been 13 years!"
Y10-02-14]]> Ferg Kyle photo Mon, 22 Feb 2010 02:10:37 +0000 http://www.europaowners.org/gallery2/v/Europa064-914-mono-FergKyle/Fergs+home+grown+battery+switches/BATTERYswitchOPERATION.JPG.html http://www.europaowners.org/gallery2/v/Europa064-914-mono-FergKyle/Fergs+home+grown+battery+switches/BATTERYswitchOPERATION.JPG.html
Battery Switch operation.
"Basically the controls are just by my left wrist in
the left seat, spring-loaded to go aft. Aft is OFF. The control knobs sit in
slots, and will spring aft if not in the Power-On slot (or if the cable
snaps, etc.) The cables snake aft to the Switch Board which holds the
switches in the ‘fuselage behind the second bulkhead – see above), The
switches take the battery(s) power and deliver to the firewall port side via
1/2inch copper pipe with CCA#4 cable. I hope that makes it a bit clearer –
sorry for all the Mbits."
Y10-02-14]]> Ferg Kyle photo Mon, 22 Feb 2010 02:09:48 +0000 http://www.europaowners.org/gallery2/v/Europa064-914-mono-FergKyle/Fergs+home+grown+battery+switches/BATTERYcutoffSWUTCHES1.JPG.html http://www.europaowners.org/gallery2/v/Europa064-914-mono-FergKyle/Fergs+home+grown+battery+switches/BATTERYcutoffSWUTCHES1.JPG.html
Battery cutoff switches 2.
This has information on spring/ball plungers.
Y10-02-18]]> Ferg Kyle photo Mon, 22 Feb 2010 02:09:00 +0000 http://www.europaowners.org/gallery2/v/Europa064-914-mono-FergKyle/Fergs+home+grown+battery+switches/BATTERYcutoffSWITCHES2.JPG.html http://www.europaowners.org/gallery2/v/Europa064-914-mono-FergKyle/Fergs+home+grown+battery+switches/BATTERYcutoffSWITCHES2.JPG.html
Battery cutoff switches 1.
"GENERAL NOTES:
THE WHOLE PURPOSE IN PRODUCING THIS ITEM WAS TO THWART THE NEED FOR CONTACTORS, MOST OF WHICH REQUIRE UPWARDS OF 1 AMPERE TO REMAIN CONNECTED. 4 CONTACTORS TO STAY CONNECTED FOR THE LENGTH OF THE FLIGHT WAS EXCESSIVE IN VIEW OF EXPECTED NEEDS, SO A MECHANICAL ALT-ERNATIVE WAS DEVISED.
ONE EXAMPLE IS THE MASTER SWITCH WHICH IS A RACING CAR CUTOFF SWITCH OPERATED BY A REPLACEMENT ‘KEY’ WHICH PENETRATES THE INSTRUMENT PANEL FOR 11 INCHES AND IS INTERNAL PANEL-MOUNTED.
BELOW IS THE OTHER EXAMPLE. FOLLOWING THE SUGGESTION OF BOB NUCKOLLS, A SLIDING ELEMENT PROVIDES ON/OFF CONTACT WITH TWO BRASS POSTS. THE RESULT IS ABOUT EQUAL IN CONTACT RESISTANCE TO THE USUAL COMMERCIAL CONTACTOR. DIMENSIONS ARE NOMINAL AND DEPEND ON EXPECTED LOADS AND DURATION. IN MY CASE, THE LINES ARE ERIC JONES CCA#4 CABLE FROM BATTERY TO FIREWALL FORWARD POSTS."

I would like to beg a boon to give Bob Nuckolls some credit for the initial design? I complained to him about high running current in contactors and he sketched the basic idea, so it’s really his baby I think. I have built several of these before settling on one model, but some have 1/4inch posts and some 5/16"

Y10-02-14]]> Ferg Kyle photo Mon, 22 Feb 2010 02:08:10 +0000