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Gear down and locked switch

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paul.the.aviator(at)gmail
Guest

Posted: Sat Jul 28, 2012 11:36 am Post subject: Gear down and locked switch

Hi All,



I have just ordered a SmartASS II Airspeed Speaker from Mark Burton and one of the features it has is to integrate with a gear down switch if you have one installed.



I am looking for best practices from mono wheel folks that have installed a gear down and locked switch on the main wheel (I already have them on the out riggers).  I am interested to know where people have mounted them, and what type of micro switches they have used. (part number would be nice)

 

Also, I noticed a few months back someone posted a data sheet in non ferrous proximity sensors for door latch sensing, but I can't seem to find it.  If anyone has a URL for this I'd appreciate it if they could send it too me.

 

Thanks and regards, Paul

  [quote][b]

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rparigoris

Joined: 24 Nov 2009
Posts: 797

Posted: Sat Jul 28, 2012 12:09 pm Post subject: Gear down and locked switch

Hi Paul 

 	> I am looking for best practices from mono wheel folks that have installed 	> a 	> gear down and locked switch on the main wheel (I already have them on the 	> out riggers). I am interested to know where people have mounted them, and 	> what type of micro switches they have used. (part number would be nice): 

 	http://www.europaowners.org/main.php?g2_itemId=29497 

 	Ron Parigoris    [quote][b]

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davidjoyce(at)doctors.org
Guest

Posted: Sat Jul 28, 2012 12:48 pm Post subject: Gear down and locked switch

Paul, If you ask Mark Burton nicely he will either supply 

you with an appropriate water proof switch, or tell you 

where to order one from. I fitted mine so that the lever 

arm actuating the switch sticks out into the 'down' 

detent. There are two holes in the micro switch and I have 

put two small screws through those holes into the 

fibreglass just behind the alloy surround of the gear 

lever, and also Aralditing the side of the switch to the 

fibreglass. I also put a dollop of silicone sealant 

covering the end of he switch where the wires emerge to 

help the switch's own waterproofing, as it is in the spray 

line if the runway is wet.

Regards, David Joyce, G- XSDJ



On Sat, 28 Jul 2012 14:36:01 -0500

  Paul McAllister <paul.the.aviator(at)gmail.com> wrote:

 	  Quote: 	
		   Hi All,

 

 I have just ordered a SmartASS II Airspeed Speaker from 

Mark Burton and one

 of the features it has is to integrate with a gear down 

switch if you have

 one installed.

 

 I am looking for best practices from mono wheel folks 

that have installed a

 gear down and locked switch on the main wheel (I already 

have them on the

 out riggers).  I am interested to know where people have 

mounted them, and

 what type of micro switches they have used. (part number 

would be nice)

 

 Also, I noticed a few months back someone posted a data 

sheet in non

 ferrous proximity sensors for door latch sensing, but I 

can't seem to find

 it.  If anyone has a URL for this I'd appreciate it if 

they could send it

 too me.

 

 Thanks and regards, Paul

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Richard Lamprey

Joined: 15 Jul 2011
Posts: 95
Location: Kenya

Posted: Sun Jul 29, 2012 1:16 am Post subject: Re: Gear down and locked switch

Paul, I have a gear locked microswitch mounted on the inner port side of the wheel well.  It is engaged by a small flat plate fixed to the side of the LGO8P arm, such that when the arm has actually moved overcentre (ie is locked), the switch engages, and a green light illuminates on the panel.  



I thought about putting it in the gear-locked gate, but this only tell you that the lever is in the gate, and not that the gear is locked down (which are two different things, especially if you have any movement in those 3 bolts attaching the gear lever to LG08S caused by eg turbulence).  



None of this stopped my from landing gear-up, when I had moved the landing gear right down, but not engaged in the gate.... no green light...my head was seriously in the wrong place that day... .

Best

Richard

Kenya Classic 5Y-LRY

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paul.the.aviator(at)gmail
Guest

Posted: Mon Jul 30, 2012 5:18 am Post subject: Gear down and locked switch

Thanks Richard,



I am sure that you have heard the expression that there are pilots who have landed gear up and then there are those who will 



A very experienced corporate pilot who rented space in my hanger recently landed his Comanche with the gear up, so I think it's just an accident waiting to happen.

 

I am planning to install Mark Burton's SmartASS so I thought I might as well use the gear warning feature.  In terms of human-machine interface I understand that this is as good as it gets for transferring critical information.  You never know, it might help me one day.

 

Cheers, Paul



On Sun, Jul 29, 2012 at 4:16 AM, Richard Lamprey <lamprey.richard(at)gmail.com (lamprey.richard(at)gmail.com)> wrote:

 [quote]--> Europa-List message posted by: "Richard Lamprey" <lamprey.richard(at)gmail.com (lamprey.richard(at)gmail.com)>

  

 Paul, I have a gear locked microswitch mounted on the inner port side of the wheel well.  It is engaged by a small flat plate fixed to the side of the LGO8P arm, such that when the arm has actually moved overcentre (ie is locked), the switch engages, and a green light illuminates on the panel.

  

 I thought about putting it in the gear-locked gate, but this only tell you that the lever is in the gate, and not that the gear is locked down (which are two different things, especially if you have any movement in those 3 bolts attaching the gear lever to LG08S caused by eg turbulence).

  

 None of this stopped my from landing gear-up, when I had moved the landing gear right down, but not engaged in the gate.... no green light...my head was seriously in the wrong place that day... .

 Best

 Richard

 Kenya Classic 5Y-LRY

 

 

 

 

 Read this topic online here:

 

 http://forums.matronics.com/viewtopic.php?p=379464#379464

 

 

 

 

 

 

 

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 [b]

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paul.the.aviator(at)gmail
Guest

Posted: Mon Jul 30, 2012 5:22 am Post subject: Gear down and locked switch

Thanks David,



I might end up sensing both the latch and the over center lock, then its covered from both aspects.  I like the idea of an audio warning, as I understand it, in terms of human-machine interface it's about as good as it gets.

 

My hanger partner who is a very experienced corporate pilot landed his Comanche with the gear up a couple of weeks ago, so it can happen to any of us.



Cheers, PAul



On Sat, Jul 28, 2012 at 3:47 PM, David Joyce <davidjoyce(at)doctors.org.uk (davidjoyce(at)doctors.org.uk)> wrote:

 [quote]--> Europa-List message posted by: "David Joyce" <davidjoyce(at)doctors.org.uk (davidjoyce(at)doctors.org.uk)>

  

 

 Paul, If you ask Mark Burton nicely he will either supply you with an appropriate water proof switch, or tell you where to order one from. I fitted mine so that the lever arm actuating the switch sticks out into the 'down' detent. There are two holes in the micro switch and I have put two small screws through those holes into the fibreglass just behind the alloy surround of the gear lever, and also Aralditing the side of the switch to the fibreglass. I also put a dollop of silicone sealant covering the end of he switch where the wires emerge to help the switch's own waterproofing, as it is in the spray line if the runway is wet.

  Regards, David Joyce, G- XSDJ

[b]

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