Float Style Fuel senders
Posted: Fri Feb 17, 2012 8:27 pm
As promised the part number for the Stewart Warner float style fuel level sender is 385C-F (right hand). I use the same one on both sides for simplicity etc and they list at about $43.00 Cdn each. There is also a left hand one, part #385B-F, but it is easier just to use the same one on both sides (use which ever part # they have in stock for you). These are 240 ohm senders and will work with any of the fuel gauges (designed for float senders) that are sold by Aircraft Spruce, Wag Aero, etc, or you could just use the gauges Stewart Warner sells also.
To save you some time figuring out exactly were they go, so you get an even swing on the float arm (that must be cut and bent to suit the application), the 1 3/8" installation hole is drilled 7 1/2" aft of the main spar and 4 5/8" up from the bottom of the root rib. This location gives a comprimise, on the side of showing the actual 1/4 to full tank side. When the floats/gauges reach empty here, you will be running on your 45 minute reserve if running on both tanks (you hope)! I highly suggest a .032 or .040 doubler around the area on the standard rebel and the use of "float" anchor nuts for attachment of the sender. These anchor nuts are sealed by a bulb like stamping and have an o-ring on the mounting face. When installed and coated with Proseal they will provide a sealed reusable mounting nut for the 5 x 1032 screws needed to hold the sender in place. The sender mounting pattern is not concentric, so make sure you have it the right way up when drilling your 5 holes!
Regards,
Wayne G. O'Shea
www.irishfield.on.ca
To save you some time figuring out exactly were they go, so you get an even swing on the float arm (that must be cut and bent to suit the application), the 1 3/8" installation hole is drilled 7 1/2" aft of the main spar and 4 5/8" up from the bottom of the root rib. This location gives a comprimise, on the side of showing the actual 1/4 to full tank side. When the floats/gauges reach empty here, you will be running on your 45 minute reserve if running on both tanks (you hope)! I highly suggest a .032 or .040 doubler around the area on the standard rebel and the use of "float" anchor nuts for attachment of the sender. These anchor nuts are sealed by a bulb like stamping and have an o-ring on the mounting face. When installed and coated with Proseal they will provide a sealed reusable mounting nut for the 5 x 1032 screws needed to hold the sender in place. The sender mounting pattern is not concentric, so make sure you have it the right way up when drilling your 5 holes!
Regards,
Wayne G. O'Shea
www.irishfield.on.ca