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Stuck looking for a switch

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aadamson(at)highrf.com
Guest

Posted: Fri May 04, 2007 11:17 am Post subject: Stuck looking for a switch

I'd like to use an Off-(ON) type toggle switch for a start switch.... BUT,

I'd like to use it with a "Switch Guard".  So, ok, that seems pretty

straight forward... However, I ordered a switch guard and noticed that it

has a tab that mates to the groove in the switch to prevent rotation.  The

tab is on the bottom of the hole when the switch guard is oriented correctly

(flip up to access).  Good so far, right....



Wrong, all of the Momentary switches that I've been able to look at have the

groove *UP" when positioned so that the momentary position is UP... Exactly

opposite of what I need.



While the above may not be a very good description, I thought I'd post this

to see if anyone had an idea of what switch or other I might utilize to

correct this problem.  Obviously, I can grind the tab away and use star

washers to prevent rotation, but I'd like to keep it locked together with

the tab and groove if I can...



Thanks in advance,

Alan

john(at)ballofshame.com
Guest

Posted: Fri May 04, 2007 11:31 am Post subject: Stuck looking for a switch

Well, if you don't mind doing without guard, digikey has a LOT of switch

options.  There's one that does (On-Mom) with a keylock handle (i.e. you

have to pull the handle out to get it to the momentary state).  It's just

as good as a guard and takes up less space.  Probably looks nicer too.



Give a look at what they have, anyway.



-John

www.ballofshame.com



 	  Quote: 	
		   

 <aadamson(at)highrf.com>



 I'd like to use an Off-(ON) type toggle switch for a start switch.... BUT,

 I'd like to use it with a "Switch Guard".  So, ok, that seems pretty

 straight forward... However, I ordered a switch guard and noticed that it

 has a tab that mates to the groove in the switch to prevent rotation.  The

 tab is on the bottom of the hole when the switch guard is oriented

 correctly

 (flip up to access).  Good so far, right....



 Wrong, all of the Momentary switches that I've been able to look at have

 the

 groove *UP" when positioned so that the momentary position is UP...

 Exactly

 opposite of what I need.



 While the above may not be a very good description, I thought I'd post

 this

 to see if anyone had an idea of what switch or other I might utilize to

 correct this problem.  Obviously, I can grind the tab away and use star

 washers to prevent rotation, but I'd like to keep it locked together with

 the tab and groove if I can...



 Thanks in advance,

 Alan

aadamson(at)highrf.com
Guest

Posted: Fri May 04, 2007 11:49 am Post subject: Stuck looking for a switch

John, yep you are right, however the problem with a starter, it doesn't like

to be switched on all the time so it needs to be a momentary in the real

sense of the word, not lockable.  So the guard is used just to make sure it

doesn't get lifted when you are reaching around the panel, in the bumps 



Alan 



--

rjquillin(at)gmail.com
Guest

Posted: Fri May 04, 2007 12:09 pm Post subject: Stuck looking for a switch

At 12:15 5/4/2007, you wrote:

 	  Quote: 	
		  Wrong, all of the Momentary switches that I've been able to look at have the

groove *UP" when positioned so that the momentary position is UP... Exactly

opposite of what I need.


	


Without digging through all my notes, I seem to recall the guard was 

available in either orientation.

Might be worth checking a bit further.



Ron Q.

JOHN TIPTON

Joined: 17 Sep 2006
Posts: 239
Location: Torquay - England

Posted: Fri May 04, 2007 12:40 pm Post subject: Stuck looking for a switch

I think Alan has a very valid point, something I am thinking of using also: 

for anyone who has had an engine failure (due to fuel starvation) to have a 

starter switch with an 'on' position helps you free up a hand when you are 

trying to fly the plane with one hand, and try all alternatives to get the 

thing started again (pump primer, pump the throttle etc) with the other.



John



---

aadamson(at)highrf.com
Guest

Posted: Fri May 04, 2007 12:52 pm Post subject: Stuck looking for a switch

Ding, ding, ding, you get the prize.... Thanks so much, looks like I need an

MS25224-3 instead of a -1 (which I believe I have)... 



Data here...



http://www.eatonelectrical.com/html/VCBU/commcat2/guards.pdf



Thanks again, that was a great help!

Alan 



--

john(at)ballofshame.com
Guest

Posted: Fri May 04, 2007 2:13 pm Post subject: Stuck looking for a switch

I see that you found the solution.  Just to clear up the switch, though. 

I believe the switch is momentary...it's just that you have to unlock it

to get it in the momentary position.  When you let go, it snaps back down

and relocks.



-John

www.ballofshame.com

[quote] 

 <aadamson(at)highrf.com>



 John, yep you are right, however the problem with a starter, it doesn't

 like

 to be switched on all the time so it needs to be a momentary in the real

 sense of the word, not lockable.  So the guard is used just to make sure

 it

 doesn't get lifted when you are reaching around the panel, in the bumps 



 Alan



 --

khorton01(at)rogers.com
Guest

Posted: Fri May 04, 2007 4:49 pm Post subject: Stuck looking for a switch

I had a similar problem.  I couldn't find a quick source to get the  

correct switch guard, so I filed off the tab on the guard so I could  

put it on in the other orientation.  Then I drilled a small hole  

through the metal base near the hinge, and bolted it in place on the  

panel with a 2-56 bolt and nut.  That keeps it from rotating, and is  

not visible when the guard is down.



Kevin Horton

On 4 May 2007, at 16:51, Alan Adamson wrote:



[quote] 

 <aadamson(at)highrf.com>



 Ding, ding, ding, you get the prize.... Thanks so much, looks like  

 I need an

 MS25224-3 instead of a -1 (which I believe I have)...



 Data here...



 http://www.eatonelectrical.com/html/VCBU/commcat2/guards.pdf



 Thanks again, that was a great help!

 Alan



 --

Bret Smith

Joined: 09 Jan 2006
Posts: 178
Location: Mineral Bluff, GA

Posted: Fri May 04, 2007 5:18 pm Post subject: Stuck looking for a switch

Alan,



I was assuming "UP" would be the logical direction for start... 

Bret Smith

RV-9A (91314)

Mineral Bluff, GA

www.FlightInnovations.com



--

_________________
Bret Smith
RV-9A (Emp)

aadamson(at)highrf.com
Guest

Posted: Fri May 04, 2007 7:30 pm Post subject: Stuck looking for a switch

Kevin, you read my mind... I may do that exact same thing... We'll see...



Alan 



--

aadamson(at)highrf.com
Guest

Posted: Fri May 04, 2007 7:30 pm Post subject: Stuck looking for a switch

Yep, that's correct, however with the little tab down to allow the guard to

flip up, that is exactly 180 degrees opposite of what you need with the -1

version of the guard.  But we've beat this one dead and I know the

solution... Actually 2 of them 



Alan 



--

schamber(at)glasgow-ky.co
Guest

Posted: Fri May 04, 2007 7:46 pm Post subject: Stuck looking for a switch

I had the same issue on a couple of switches, I just milled another slot in 

the threaded part of the switch 180 degrees from the original.



Sam Chambers

Glasgow, KY

Long-EZ N775AM



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