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Insert Pics
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09-16-2013, 09:57 PM
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Join Date: Aug 2012
Location: Panama City, FL
Posts: 132
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Spar Pin Magnetic Field
I also had some issues getting the reed switches to activate using the dimensions in the Van's drawings. I did some testing to determine the issues with the magnetic field and the masking of the SS handle and found that 0.125" can make a big difference in getting the switch to active. I put together a document that shows the magnetic field required to activate the reed switch. The two lessons learned are extending the aluminum pin by 0.125" increases the field's activation distance and make sure the reed switch is ABOVE the end of the SS portion of the Spar Pin handle.
Check out the pdf link below for a visual of the magnetic field: https://www.dropbox.com/s/l32g1pkx1w...Oct%202012.pdf
John Salak
RV-12 120116
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09-20-2013, 04:13 PM
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Join Date: Dec 2011
Location: TWIN WATERS, Queensland, AUSTRALIA
Posts: 89
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success
Spar interlock pins now working reliably! I enlarged the hole in the side of the armrest just slightly to 5/32, and made clips to hold the reed switches right up against the underside of the armrest as Joe suggested. Eureka! Added just a little Silicone (RTV) to ensure no movement with vibration. Thanks Joe & everyone for your advice, Cheers, DEAN...
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09-21-2013, 09:17 AM
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Join Date: Jan 2012
Location: Northeast Ohio
Posts: 685
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Dean - Any chance you can post a photo of your reed switch install for us to have a look at?
Joe always has great solutions .. glad to hear his suggestion worked well for you. Think I will try to mount the switch that way from the get go.
__________________
John
www.dogaviation.com
RV-12 Wings, Empennage, Fuselage, Finishing, Avionics and Powerplant kits all completed
Now Flying!!
Donation paid until September 2021
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09-21-2013, 03:41 PM
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Join Date: Dec 2011
Location: TWIN WATERS, Queensland, AUSTRALIA
Posts: 89
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Hi John, I'll give it a try but may fail the task - it's an awkward place to photograph, & I'm not sure my computer skills are up to getting a photo on to this site... In any case, the clip is a simple piece of Al sheet, approx. 1/2 by 1&1/4 inches, with a hole for the screw & a couple of bends to hold the reed switch flat on a surface. Took only 5 mins to do... Cheers, DEAN....
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09-21-2013, 05:07 PM
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Join Date: Feb 2008
Location: Hartlepool, England
Posts: 183
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Shot In The Dark
A while ago (2 years??) I got a letter from a UK RV 12 builder who suggested a 'mechanical' electrical wing connection possibility. I lost the letter (working abroad). I believe the builder ran a hotel/restaurant. If he reads this I would be interested in any results he came up with.
Jim D
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09-22-2013, 02:57 AM
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Join Date: Dec 2011
Location: TWIN WATERS, Queensland, AUSTRALIA
Posts: 89
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photos
John- G, I have a couple of good shots of my clips, - if someone can educate me on how to upload them I will gladly do so. Otherwise,if you PM me with your email address I can send them that way.... Cheers, DEAN...
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09-22-2013, 05:46 PM
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Join Date: Feb 2010
Location: Perth, Western Australia
Posts: 1,647
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__________________
rgmwa
RV-12LR 912ULS
120346
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09-23-2013, 12:05 AM
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Join Date: Oct 2010
Location: Phoenix, AZ
Posts: 2,820
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It's been quite some time since I set the reed switches but I do recall that removing the spring made it easier to find and mark the sweet spot.
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09-25-2013, 07:07 PM
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Join Date: Dec 2011
Location: TWIN WATERS, Queensland, AUSTRALIA
Posts: 89
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photo
a try at inserting photo[IMG]  [/IMG]
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09-25-2013, 07:13 PM
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Join Date: Dec 2011
Location: TWIN WATERS, Queensland, AUSTRALIA
Posts: 89
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More success
Wow, I managed to insert a photo.... maybe I'm not such a computer nerd after all!!?? cheers, DEAN....
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