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Main => Builders Discussions => Topic started by: airupthere on January 28, 2017, 07:34:50 AM

Title: What type of switch is cross-feed on boeing 737-800
Post by: airupthere on January 28, 2017, 07:34:50 AM
I'm building an 800 model. I have a 8-position rotary switch right now that I was going to use for the cross feed on the OVH fuel panel. But it just occurred to me, maybe that's not the right type to use? Should it be a rotary encoder instead?  Any thoughts or input is welcome.
Title: Re: What type of switch is cross-feed on boeing 737-800
Post by: jackpilot on January 28, 2017, 10:38:24 AM
Rotary indexed 90°.
Hard to find

If you are not too fussy about it a 45° will do the job (8 positions)
Jack
Title: Re: What type of switch is cross-feed on boeing 737-800
Post by: mikeybear on January 29, 2017, 02:02:53 AM
http://www.mouser.co.uk/ProductDetail/CK-Components/A12405RNZQ/?qs=sGAEpiMZZMvNbjZ2WlReYqS7wnWG8l9O8cdfGyKJHmc%3d (http://www.mouser.co.uk/ProductDetail/CK-Components/A12405RNZQ/?qs=sGAEpiMZZMvNbjZ2WlReYqS7wnWG8l9O8cdfGyKJHmc%3d)

How about this  ?

Regards

Dave
Title: Re: What type of switch is cross-feed on boeing 737-800
Post by: airupthere on January 29, 2017, 07:53:35 AM
Thanks a lot guys!! I like that switch you recommended Dave.. My uncle is 737-800 typed, and he said there's no clicking.. so I think I would skip the 45 8-position. the 90 degree, 4 position seems like it would be perfect.
Title: Re: What type of switch is cross-feed on boeing 737-800
Post by: jackpilot on January 29, 2017, 11:09:08 AM
You will have clicks with both. 2 cliks between the 90° extremes.
Dave's switch should be good.
Jack

Also 90° no clicks
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Title: Re: What type of switch is cross-feed on boeing 737-800
Post by: mickc on January 29, 2017, 01:33:56 PM
All good options!

Just for reference, this is what the real one looks like, i listed one for sale here a while back

http://www.cockpitbuilders.com/community/index.php?topic=4975.msg36327#msg36327 (http://www.cockpitbuilders.com/community/index.php?topic=4975.msg36327#msg36327)
Title: Re: What type of switch is cross-feed on boeing 737-800
Post by: mikeybear on January 31, 2017, 05:59:00 AM
Quote from: airupthere on January 29, 2017, 07:53:35 AM
Thanks a lot guys!! I like that switch you recommended Dave.. My uncle is 737-800 typed, and he said there's no clicking.. so I think I would skip the 45 8-position. the 90 degree, 4 position seems like it would be perfect.

Not sure if its relevant, but the "clicks" come from a spring and ball bearing which can be removed iirc

Regards

Dave