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  #1  
Old 05-13-2020, 11:42 AM
Raymo's Avatar
Raymo Raymo is offline
 
Join Date: Nov 2014
Location: Richmond Hill, GA (KLHW)
Posts: 2,340
Default Steinair panel switch cheat sheet

This won't cover all the bases but should help with panel planning for many. Compiled during a recent RV-7A panel build. The color column is for the rubber switch cover/boot, also sold by Steinair.

EDIT: 6 Aug 2020: Update to correct the cowl flap switch.

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RV-7A - Slider - N495KL - First flt 27 Jan 17
O-360-A4M w/ AFP FM-150 FI, Dual PMags, Vetterman Trombone Exh, SkyTech starter, BandC Alt (PP failed after 226 hrs)
Catto 3 blade NLE, FlightLines Interior, James cowl, plenum & intake, Anti-Splat -14 seat mod and nose gear support
All lines by TSFlightLines (aka Hoser)

Last edited by Raymo : 08-06-2020 at 12:26 PM.
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  #2  
Old 05-13-2020, 11:54 AM
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mfleming mfleming is offline
 
Join Date: Sep 2016
Location: Joseph, Oregon
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Thanks, just started planning for panel switches. Very timely
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RV-7 Slider #74572
Started 11/2016
Empennage completed 11/2016 (sans fiberglass)
Ailerons and flaps completed 3/2017.
Wings completed 12/2017
Started on QB fuselage 01/2018
Sliding canopy mostly completed 10/2020
Wiring and Avionics harness completed 9/2/2021
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  #3  
Old 05-14-2020, 12:44 AM
oren_rokach oren_rokach is offline
 
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Location: Tel-Aviv Israel
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Default

Any Idea why DPDT is required?
Isn't SPDT suitable for flaps? https://www.digikey.com/product-deta...197-ND/1248727
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  #4  
Old 05-14-2020, 07:50 AM
cajunwings cajunwings is offline
 
Join Date: Jun 2007
Location: new iberia la
Posts: 869
Default

Quote:
Originally Posted by Raymo View Post
This won't cover all the bases but should help with panel planning for many. Compiled during a recent RV-7A panel build. The color column is for the rubber switch cover, also sold by Steinair.

Thanks Ray.

Don Broussard
RV9 Rebuild in Progress
57 Pacer
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  #5  
Old 05-14-2020, 08:27 AM
Desert Rat Desert Rat is offline
 
Join Date: Aug 2018
Location: Wichita KS
Posts: 717
Default

Quote:
Originally Posted by oren_rokach View Post
Any Idea why DPDT is required?
Isn't SPDT suitable for flaps? https://www.digikey.com/product-deta...197-ND/1248727

Im not there yet on my RV, but assuming that if it's like most of the stuff I've worked on over the years, it's so you can reverse polarity on the motor to make it run both directions.

I remember my first semester in A&P school I asked how this worked (electric cowl flaps on the back of a C-337!) and my basic electricity instructor sketched it out on the little spiral bound notebook he carried around in his shirt pocket. Do they even make those anymore?
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Last edited by Desert Rat : 05-14-2020 at 09:12 AM.
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  #6  
Old 08-06-2020, 12:26 PM
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Raymo Raymo is offline
 
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Location: Richmond Hill, GA (KLHW)
Posts: 2,340
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Updated original post with correction.
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RV-7A - Slider - N495KL - First flt 27 Jan 17
O-360-A4M w/ AFP FM-150 FI, Dual PMags, Vetterman Trombone Exh, SkyTech starter, BandC Alt (PP failed after 226 hrs)
Catto 3 blade NLE, FlightLines Interior, James cowl, plenum & intake, Anti-Splat -14 seat mod and nose gear support
All lines by TSFlightLines (aka Hoser)
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  #7  
Old 08-06-2020, 04:53 PM
Pdtofly Pdtofly is offline
 
Join Date: Jan 2012
Location: Reno, NV
Posts: 531
Default It is a DPDT switch

Quote:
Originally Posted by oren_rokach View Post
Any Idea why DPDT is required?
Isn't SPDT suitable for flaps? https://www.digikey.com/product-deta...197-ND/1248727
You need a DPDT switch as your flap motor wires go to the center lug on the switch. What you do is cross the outside lugs, so you just change the polarity on the center lugs to change direction of the motor.

Brian
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