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#1
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Gear Warning
Greetings all, I am looking for a drawing that depicts the electrical wiring of a DG-300. Does anyone know of a link or have a basic drawing of a gear warning system?
Thank you in advace |
#2
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Gear Warning
Hi,
I can't help you with the DG-300, but I do offer a simple gear warning system from Tasman. It is pretty cool. It has a digital recorder in it. You record your voice saying something like "Lower the Gear NOW!" and it plays the message when your gear is up and the airbrakes are open. Of course you need switches placed on the gear and airbrake mechanisms. I just received a batch of them recently and will add them to my web site this morning. I sell both the Tasman TB32 Echo gear warning system and some small switches. The Echo sells for $85. http://www.cumulus-soaring.com/tasman.htm I'll get the details on the web site right now with photos later today. Good Soaring, -- Paul Remde Cumulus Soaring, Inc. http://www.cumulus-soaring.com "Gadget Guy" wrote in message ... Greetings all, I am looking for a drawing that depicts the electrical wiring of a DG-300. Does anyone know of a link or have a basic drawing of a gear warning system? Thank you in advace -- Gadget Guy |
#3
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Gear Warning
The wiring is not a complex problem; you just need
two paths for the current. One path when the gear is up and another when the gear is down. It is better, in my view, the bigger problem is finding a place to put the switches. I tried to use a 9v batttery to drive the system and quickly learned that when the wings are off, nothing holds the spoiler handle in place and the spoiler handle would open slightly in the trailer and just run the battery down. Better to wire it to the main battery and let the master switch take care of this problem. At 10:12 16 November 2005, Gadget Guy wrote: Greetings all, I am looking for a drawing that depicts the electrical wiring of a DG-300. Does anyone know of a link or have a basic drawing of a gear warning system? Thank you in advace -- Gadget Guy |
#4
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Gear Warning
The wiring is not a complex problem; you just need
two paths for the current. One path when the gear is up and another when the gear is down. It is better, in my view, the bigger problem is finding a place to put the switches. I tried to use a 9v batttery to drive the system and quickly learned that when the wings are off, nothing holds the spoiler handle in place and the spoiler handle would open slightly in the trailer and just run the battery down. Better to wire it to the main battery and let the master switch take care of this problem. At 10:12 16 November 2005, Gadget Guy wrote: Greetings all, I am looking for a drawing that depicts the electrical wiring of a DG-300. Does anyone know of a link or have a basic drawing of a gear warning system? Thank you in advace -- Gadget Guy |
#5
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Gear Warning
I would recommend magnetic reed switches (~$0.50) instead of microswitches.
Reed switches require no contact with the spoiler and gear controls since they operate in proximity to a tiny magnet epoxied to a control rod. They don't need precise adjustment to work and they never wear out. I selected a raucous low pitched buzzer as the warning horn because it didn't sound like any other device in the cockpit. High pitched squealers sound too much like an audio vario. Another neat backup is GPS_LOG WinCE PDA software. It sounds a warning of your choice by playing a .wav file when the glider descends to pattern altitude above the terrain elevation map. I use both systems. Bill Daniels "Nyal Williams" wrote in message ... The wiring is not a complex problem; you just need two paths for the current. One path when the gear is up and another when the gear is down. It is better, in my view, the bigger problem is finding a place to put the switches. I tried to use a 9v batttery to drive the system and quickly learned that when the wings are off, nothing holds the spoiler handle in place and the spoiler handle would open slightly in the trailer and just run the battery down. Better to wire it to the main battery and let the master switch take care of this problem. At 10:12 16 November 2005, Gadget Guy wrote: Greetings all, I am looking for a drawing that depicts the electrical wiring of a DG-300. Does anyone know of a link or have a basic drawing of a gear warning system? Thank you in advace -- Gadget Guy |
#6
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Gear Warning
Paul Remde wrote:
Hi, I can't help you with the DG-300, but I do offer a simple gear warning system from Tasman. It is pretty cool. It has a digital recorder in it. You record your voice saying something like "Lower the Gear NOW!" and it plays the message when your gear is up and the airbrakes are open. Of course you need switches placed on the gear and airbrake mechanisms. I just received a batch of them recently and will add them to my web site this morning. I sell both the Tasman TB32 Echo gear warning system and some small switches. The Echo sells for $85. Nice idea, but even better would be to have the Echo also function as an extension speaker. Adding that function would add more value at little cost. -- Change "netto" to "net" to email me directly Eric Greenwell Washington State USA |
#7
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Gear Warning
Gadget Guy wrote:
Greetings all, I am looking for a drawing that depicts the electrical wiring of a DG-300. Does anyone know of a link or have a basic drawing of a gear warning system? If you have a Cambridge 302 vario (or similar), you can connect the gear and spoiler switches to it to provide the warning. The 302 can also be set to provide a "spoilers open" warning at the start of a launch (airspeed triggered). It's the system I use. -- Change "netto" to "net" to email me directly Eric Greenwell Washington State USA |
#8
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Gear Warning
"Eric Greenwell" wrote in message
: Gadget Guy wrote: Greetings all, I am looking for a drawing that depicts the electrical wiring of a DG-300. Does anyone know of a link or have a basic drawing of a gear warning system? If you have a Cambridge 302 vario (or similar), you can connect the gear and spoiler switches to it to provide the warning. The 302 can also be set to provide a "spoilers open" warning at the start of a launch (airspeed triggered). It's the system I use. -- Change "netto" to "net" to email me directly Eric Greenwell Washington State USA The later models of LNAV use a similar system. And, yes, the spoiler open warning system on takeoff is a plus. Larry Goddard "01" USA |
#9
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Gear Warning
Hi,
In addition to the audible signal from the 302 - if you have a 303 it displays a text message which makes it obvious what the issue is. I like the Tasman approach because a voice message should be able to cut through all the beeps already going on in the cockpit. I talked to one user who installed them in his gliders at his commercial operation. He said the recorded message was "Lower the Fxxxing Landing Gear!" - in an all out attempt to get the pilot's attention. Does anyone have any suggestions for sources of small magnetic reed switches? I sell mechanical microswitches which I have used in the past and like, but I can see the advantages to non-contact switching. Good Soaring, Paul Remde Cumulus Soaring, Inc. http://www.cumulus-soaring.com "Eric Greenwell" wrote in message ... Gadget Guy wrote: Greetings all, I am looking for a drawing that depicts the electrical wiring of a DG-300. Does anyone know of a link or have a basic drawing of a gear warning system? If you have a Cambridge 302 vario (or similar), you can connect the gear and spoiler switches to it to provide the warning. The 302 can also be set to provide a "spoilers open" warning at the start of a launch (airspeed triggered). It's the system I use. -- Change "netto" to "net" to email me directly Eric Greenwell Washington State USA |
#10
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Gear Warning
Paul:
Many electronic component wholesalers/retailers have these available. I've bought Hamlin reed switches and magnets from Digi-Key - www.digikey.com. Mike |
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