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  #11  
Old 03-09-2011, 07:50 AM
az_gila's Avatar
az_gila az_gila is offline
 
Join Date: Jan 2005
Location: 57AZ - NW Tucson area
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Question

Quote:
Originally Posted by hobby_rv6 View Post
...
I ended up with a switch like this


This momentary switch is a "security" kind normally used on vending machines which mounts flush with the surface and cannot be accidentally bumped. I found it at a local electric supply shop for about $5.

Hobby

Hobby, neat switch, what diameter is the thread?
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Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
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  #12  
Old 03-09-2011, 12:20 PM
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RV10Rob RV10Rob is offline
 
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Location: Woodinville, WA
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Default

Interesting... I have the ground side of my mag switch wired to airframe ground near the firewall and the p-lead shield grounded at the mag case only (which is what Van's wiring diagram shows). What's the benefit of having the mag switch ground run through the shield and back to the mag case, as shown in the diagram from earlier in this thread?

-Rob
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  #13  
Old 03-09-2011, 01:22 PM
hobby_rv6 hobby_rv6 is offline
 
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Location: Abilene, TX
Posts: 45
Default flush mounted switch

Gil,
Look at the online Digikey catalog, page 2308. It shows the Apem line of vandal proof switches. I looked at several other manufacturers, and it appears that the required mounting hole is between .625" to .875", depending upon the switch. I think that mine was .75".
Don't let the prices shown shock you. Like I said, I went to a local electric supply shop, described what I was trying to accomplish, and he walked me to the back supply room with the boxes of inventory, reached in and said "like this". And it was exactly what I wanted.
Good luck,
Hobby
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  #14  
Old 03-09-2011, 01:42 PM
elippse elippse is offline
 
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Location: Arroyo Grande, CA
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Default

The LSE always starts at TDC and when rpm increases to about 400 rpm it switches to advanced timing.
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  #15  
Old 03-09-2011, 07:27 PM
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az_gila az_gila is offline
 
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Location: 57AZ - NW Tucson area
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Quote:
Originally Posted by hobby_rv6 View Post
Gil,
Look at the online Digikey catalog, page 2308. It shows the Apem line of vandal proof switches. I looked at several other manufacturers, and it appears that the required mounting hole is between .625" to .875", depending upon the switch. I think that mine was .75".
Don't let the prices shown shock you. Like I said, I went to a local electric supply shop, described what I was trying to accomplish, and he walked me to the back supply room with the boxes of inventory, reached in and said "like this". And it was exactly what I wanted.
Good luck,
Hobby
Thanks for the info - I guess the trick is to use "vandal proof" to search...

I'll replace my ugly AC spruce one now -



...and I'll check our local electrical outlet.

I presume that quite a long physical movement of the button is required to actuate the switch, Apem did not seem to give a spec.
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Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
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  #16  
Old 03-10-2011, 09:15 PM
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vmirv8bldr vmirv8bldr is offline
 
Join Date: Jun 2005
Location: Eastvale, CA
Posts: 378
Default Grounding method - why?

Potential noise issue. Bob addresses very briefly in this article, near the end:

http://www.aeroelectric.com/articles...tchOptions.pdf

Bart
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