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B&C switches
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blues750



Joined: 06 Jun 2015
Posts: 32

PostPosted: Fri Jun 01, 2018 4:39 am    Post subject: Re: B&C switches Reply with quote

[i][i]
nuckolls.bob(at)aeroelect wrote:
At 08:20 PM 5/31/2018, you wrote:
Quote:
--> AeroElectric-List message posted by: "blues750" <den_beaulieu>

OK, have reviewed the new drawing (thank you Bob... Very Happy )...but have a couple more questions I am pondering regarding implementation.

(1) From my power source to the relay terminals (87). I would like to run a single 12 ga wire from the front of the aircraft where the ANL holder will be located and make a "Y" once I get near the relays for connection to each relay 87 terminal. Best way to fashion the "Y" ? My experience so far seems to say I cannot do a double wire splice/crimp with 12 AWG in a yellow connector. Similarly I would be doing the same thing with the gnd terminals (87A) so I could run a single ground wire forward to my firewall ground. So my question is how best to join two 12 AWG wires to a single 12AWG wire to fashion a "Y". I do have solder sleeves big enough...if that is acceptable? Open to any other ideas.

[i] How about mounting the relays as close to the ANL30
as practical and simply run two wires to the motor?
Mounting the relays close to battery contactor makes
all the wires on the ship-side really short.

The reason I took both 12AWG tot he ANL30 was for
that same reason . . . two terminals on one stud.
Quote:


I agree, this seems like the best way to do this - everything close to the firewall and only two wires aft to the pump


(2) What is the electrical symbology between the relay terminals (30) to the motor - best I can ref is some sort of light indicator?

(3) OK to crimp the diode leads in with the 22AWG terminals?

Hmmmm good question. I was going to send
you pre-wired sockets to mate with the
relays. You would splice ship's wireing
to those flying leads. A soldered lap-splice under
heat shrink is fine . . . but makes it tough
to install diodes.

Here's an alternative: https://goo.gl/QTT74j

This shows an S704 with recessed tabs where
the pre-wired socket doesn't work.

The relays I have ar like this:

[img]cid:.0[/img]

Since you need to apply your own terminals
to the coils so you can add diodes, perhaps
the sockets are more bother than asset. Let's
go with taking ship's wires to the tabs with
your own terminals. ---- Easily done



Another question: What's the plan-b for getting
gear down if your power is down or the motor
craps or a relay goes toast?

The alternate plan is to take the aircraft to the water if gear is stuck up and if anything but full up then take it to the grass or asphalt. That's probably why a lot of Alaskan amphibs have manual pumps. Wink Wink A small manual hydraulic pump may eventually replace the electric pump, but cockpit ergonomics are an issue which I haven't worked out yet.[/b]

Bob . . .


Thanks for the dialog and insight Bob! Will advise when in receipt of the "care package"

Dave...


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blues750



Joined: 06 Jun 2015
Posts: 32

PostPosted: Fri Jun 01, 2018 4:45 am    Post subject: Re: B&C switches Reply with quote

user9253 wrote:
I could not find that symbol in this pdf:
https://www.noao.edu/ets/Mechanical/Policies/ANSI%20Y32.2-1975.pdf
My guess is that it is a splice.


Thanks Joe, that makes sense!! Funny how things are usually clearer after a good night's sleep...

Dave


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user9253



Joined: 28 Mar 2008
Posts: 1234
Location: Riley TWP Michigan

PostPosted: Fri Jun 01, 2018 4:50 am    Post subject: Re: B&C switches Reply with quote

Quote:
Funny how things are usually clearer after a good night's sleep...

Sitting on the toilet for a few minutes helps me solve problems. LOL


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nuckolls.bob(at)aeroelect
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PostPosted: Thu Jun 14, 2018 6:37 pm    Post subject: B&C switches Reply with quote

Dave,

the MANL limiters came in and then I discovered
that the holder bases I had left over were mis-drilled
and should have been scrapped. Made some new
ones today. Your Care Package is in the mail
tomorrow.





Bob . . .


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blues750



Joined: 06 Jun 2015
Posts: 32

PostPosted: Wed Jun 20, 2018 6:56 pm    Post subject: Re: B&C switches Reply with quote

nuckolls.bob(at)aeroelect wrote:
Dave,

the MANL limiters came in and then I discovered
that the holder bases I had left over were mis-drilled
and should have been scrapped. Made some new
ones today. Your Care Package is in the mail
tomorrow.


Bob . . .


Hi Bob...care package received. I really like the form factor of the MANL
block, nice and compact!! Very much appreciate your generosity of time,
efforts and expertise with all this. I'll be sure to put a little extra into the annual fund raising drive to the boards. Cheers...Dave


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