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SL-30 and GTX-327 mounting trays

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sarg314(at)comcast.net
Guest

Posted: Sat Aug 05, 2006 10:15 am Post subject: SL-30 and GTX-327 mounting trays

More radio tray problems:



My Garmin SL-30 was supplied with an aluminum tray that has 3/16" 

mounting holes punched in the side, but it only has about 1/32" of space 

for the screw head - any larger than that and the radio will hit it when 

it slides in the tray.  Perhaps a #4 pan head screw would fit.  Or, I 

could just rivet the thing to the support frame.



What have other people done to mount this tray?



The Garmin GTX-327 transponder tray comes with 3/16" screw holes also, 

and they are countersunk.  The countersinks are no where near deep 

enough to accommodate a #10 screw or a #8 either. 

Does any one have any advice on how to secure this to the mounting frame?



Thanks,

-- 

Tom S., RV-6A

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pitts_pilot(at)bellsouth.
Guest

Posted: Sat Aug 05, 2006 10:34 am Post subject: SL-30 and GTX-327 mounting trays

Seems like they could at least have some kind of standard within the 

same company!!!! 

I use #6 hardware, and drill new holes in the trays to keep them lined 

up if I need to.  Then I dimple from inside the tray ..... I use the 

nail-type dimpler ........ and shim as necessary.  My whole radio stack 

is assembled on the bench and installed in the panel as a unit, even 

with all the ckt breakers if I can do it.  This allows me to 

add/change.troubleshoot wiring as necessary on the bench.  All 

connections between the airframe and the stack are through a connector. 

 That way I can disconnect, yank and haul the whole mess to the bench. 

 Almost all the satellite parts .... vor heads, displays, that sort of 

thing, are connectorized anyway, and if you're haveing a problem with 

one unit, you can pull it and the stack and play on the bench.  In the 

air conditioning.  In comfort.

Linn

do not archive



sarg314 wrote:



 	  Quote: 	
		   



 More radio tray problems:



 My Garmin SL-30 was supplied with an aluminum tray that has 3/16" 

 mounting holes punched in the side, but it only has about 1/32" of 

 space for the screw head - any larger than that and the radio will hit 

 it when it slides in the tray.  Perhaps a #4 pan head screw would 

 fit.  Or, I could just rivet the thing to the support frame.



 What have other people done to mount this tray?



 The Garmin GTX-327 transponder tray comes with 3/16" screw holes also, 

 and they are countersunk.  The countersinks are no where near deep 

 enough to accommodate a #10 screw or a #8 either. Does any one have 

 any advice on how to secure this to the mounting frame?



 Thanks,

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wgill10(at)comcast.net
Guest

Posted: Sat Aug 05, 2006 10:42 am Post subject: SL-30 and GTX-327 mounting trays

Tom, I may have some pictures if you're interested -- may have to send

off line.



Bill



--

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chaztuna(at)adelphia.net
Guest

Posted: Sat Aug 05, 2006 11:30 am Post subject: SL-30 and GTX-327 mounting trays

---- sarg314 <sarg314(at)comcast.net> wrote: 

 	  Quote: 	
		   

 

 More radio tray problems:

 

 My Garmin SL-30 was supplied with an aluminum tray that has 3/16" 

 mounting holes punched in the side, but it only has about 1/32" of space 

 for the screw head - any larger than that and the radio will hit it when 

 it slides in the tray.  Perhaps a #4 pan head screw would fit.  Or, I 

 could just rivet the thing to the support frame.

 

 What have other people done to mount this tray?

 

 The Garmin GTX-327 transponder tray comes with 3/16" screw holes also, 

 and they are countersunk.  The countersinks are no where near deep 

 enough to accommodate a #10 screw or a #8 either. 

 Does any one have any advice on how to secure this to the mounting frame?

 

 Thanks,

 -- 

 Tom S., RV-6A


	


Tom,

 I can't address the problem with the SL-30. However, my GTX 320A uses the exact same tray as your GTX 327. I used AN509-10 flush screws to mount my GTX 320A, Icom A200 and RMI uMonitor. You are correct that the dimple in the tray of the Garmin transponder does not allow the head of the screw to fit flush. However, there is room to install the radio with the screw head protruding. The protruding screw head actually acts as an internal shim, to steady the radio in the tray.

 The Garmin tray was wider (thicker material) than my other 2 trays. I simply made shims to compensate on the Icom and the uMonitor. I am very pleased with the fit and cosmetics of my installation.

 I suspect that you will find your SL-30 fits between the installed screw heads.  If it doesn't, you could always dimple the tray mounting holes.

Charlie Kuss

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sarg314(at)comcast.net
Guest

Posted: Mon Aug 07, 2006 8:30 pm Post subject: SL-30 and GTX-327 mounting trays

Charlie:

   You are correct.  I'm surprised, but that looks like it will work. I 

also checked the SL-30 tray and found that it has about 1/16" of space 

for the screw head, not 1/32".  Stark Avionics informs me that they use 

6-32 countersunk screws on the SL-30 mounting tray.  The heads stick up, 

since the you can't countersink the tray, but once again, they don't 

stick up enough to interfere with the radio sliding in and out.  Not 

pretty, but they say it works well.  (Why doesn't Garmin supply the 

right screws?) I called Garmin and they couldn't tell me what screw to use.

Thanks,



chaztuna(at)adelphia.net wrote:



 	  Quote: 	
		  



Tom,

 I can't address the problem with the SL-30. However, my GTX 320A uses the exact same tray as your GTX 327. I used AN509-10 flush screws to mount my GTX 320A, Icom A200 and RMI uMonitor. You are correct that the dimple in the tray of the Garmin transponder does not allow the head of the screw to fit flush. However, there is room to install the radio with the screw head protruding. The protruding screw head actually acts as an internal shim, to steady the radio in the tray.

 The Garmin tray was wider (thicker material) than my other 2 trays. I simply made shims to compensate on the Icom and the uMonitor. I am very pleased with the fit and cosmetics of my installation.

 I suspect that you will find your SL-30 fits between the installed screw heads.  If it doesn't, you could always dimple the tray mounting holes.

Charlie Kuss

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chaztuna(at)adelphia.net
Guest

Posted: Tue Aug 08, 2006 8:17 am Post subject: SL-30 and GTX-327 mounting trays

Tom,

  This is something to consider. You want to keep the radio's side to side "slop" movement in the tray to a minimum. Excessive movement can damage the radio internals and does nothing good for the connector pins. Use of screws below size #8 is problematic, as they tend to break off easily if installed in nutplates. Best to use the largest diameter screws which space will allow for your SL-30. The larger diameter screw heads will act to reduce excess slop space.

  Is the SL-30 tray made of aluminum or steel? If steel, is it heavy gauge steel, like the GTX 327 tray? My 8A radio rack is a variation of Mark Richardson's excellent design. I can email photos off list if you like.

 Charlie



 

  	  Quote: 	
		  --> RV-List message posted by: sarg314 <sarg314(at)comcast.net>



 Charlie:

   You are correct.  I'm surprised, but that looks like it will work. I also checked the SL-30 tray and found that it has about 1/16" of space for the screw head, not 1/32".  Stark Avionics informs me that they use 6-32 countersunk screws on the SL-30 mounting tray.  The heads stick up, since the you can't countersink the tray, but once again, they don't stick up enough to interfere with the radio sliding in and out.  Not pretty, but they say it works well.  (Why doesn't Garmin supply the right screws?) I called Garmin and they couldn't tell me what screw to use.

 Thanks,



 chaztuna(at)adelphia.net wrote:



  	  Quote: 	
		  



 Tom,

 I can't address the problem with the SL-30. However, my GTX 320A uses the exact same tray as your GTX 327. I used AN509-10 flush screws to mount my GTX 320A, Icom A200 and RMI uMonitor. You are correct that the dimple in the tray of the Garmin transponder does not allow the head of the screw to fit flush. However, there is room to install the radio with the screw head protruding. The protruding screw head actually acts as an internal shim, to steady the radio in the tray.

 The Garmin tray was wider (thicker material) than my other 2 trays. I simply made shims to compensate on the Icom and the uMonitor. I am very pleased with the fit and cosmetics of my installation.

 I suspect that you will find your SL-30 fits between the installed screw heads.  If it doesn't, you could always dimple the tray mounting holes.

 Charlie Kuss



 



  

 	




 

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