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Carb Heat Indication Mod

 
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GalinHdz



Joined: 08 Nov 2017
Posts: 72

PostPosted: Sun Mar 22, 2020 6:42 pm    Post subject: Carb Heat Indication Mod Reply with quote

During certain times while flying Carburetor Heat is used to help prevent icing and a possible engine failure. But sometimes during high workload situations I forget to turn it off which prevents the engine from generating full power and I don't want to be looking down to check the status. So I decided to design something to indicate when the carb heat is on. Now in keeping with the KIS principle it had to be simple, reliable, cheap to build and easy to install. This is what I came up with.
 
I used a military grade roller lever switch to send a signal to my DYNON system when the carb heat knob was moved. This would then indicate right on my EFIS if carb heat was on or off.  It would be simple to fabricate, install and configure.
 
First I made a mounting bracket out of a bent a piece of spare stainless steel. I tapped the bracket so I could use #6 screws to hold the roller lever switch to the bracket. To limit vibrations felt by the switch I bonded a piece of spare rubber to the bracket with high heat silicone sealant. The carb heat box already had a convenient mounting location where I could use a #8 screw to mount the new assembly near the carb heat cable. By adjusting the assembly a little, the carb heat cable actuator would move the roller lever on the switch. I connected one side of the switch to ground and the other to an available contact pin on the DYNON EMS DB-37 module.
 
After some quick configuration, I now have a light blue indication on my EFIS when the carb heat is on. Simple, effective and a I actually enjoyed the project.
You can see photos of what I did on our web page ( www.puertoricoflyer.com ).


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Robert Reed



Joined: 22 Oct 2009
Posts: 310
Location: Dallas/Ft.Worth

PostPosted: Sun Mar 22, 2020 7:04 pm    Post subject: Carb Heat Indication Mod Reply with quote

Good job, that’s why I went with fuel injection directly to intake ports.

Bob Reed
Sent from my iPhone

Quote:
On Mar 22, 2020, at 9:42 PM, Galin Hernandez <galinhdz(at)gmail.com> wrote:


During certain times while flying Carburetor Heat is used to help prevent icing and a possible engine failure. But sometimes during high workload situations I forget to turn it off which prevents the engine from generating full power and I don't want to be looking down to check the status. So I decided to design something to indicate when the carb heat is on. Now in keeping with the KIS principle it had to be simple, reliable, cheap to build and easy to install. This is what I came up with.

I used a military grade roller lever switch to send a signal to my DYNON system when the carb heat knob was moved. This would then indicate right on my EFIS if carb heat was on or off. It would be simple to fabricate, install and configure.

First I made a mounting bracket out of a bent a piece of spare stainless steel. I tapped the bracket so I could use #6 screws to hold the roller lever switch to the bracket. To limit vibrations felt by the switch I bonded a piece of spare rubber to the bracket with high heat silicone sealant. The carb heat box already had a convenient mounting location where I could use a #8 screw to mount the new assembly near the carb heat cable. By adjusting the assembly a little, the carb heat cable actuator would move the roller lever on the switch. I connected one side of the switch to ground and the other to an available contact pin on the DYNON EMS DB-37 module.

After some quick configuration, I now have a light blue indication on my EFIS when the carb heat is on. Simple, effective and a I actually enjoyed the project.
You can see photos of what I did on our web page ( www.puertoricoflyer.com ).



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mike(at)vision499.com
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PostPosted: Mon Mar 23, 2020 12:46 pm    Post subject: Carb Heat Indication Mod Reply with quote

Nice job Galin

Keep well

Mike

From: owner-kis-list-server(at)matronics.com <owner-kis-list-server(at)matronics.com> On Behalf Of Galin Hernandez
Sent: March 22, 2020 7:40 PM
To: kis-list(at)matronics.com
Subject: KIS-List: Carb Heat Indication Mod

During certain times while flying Carburetor Heat is used to help prevent icing and a possible engine failure. But sometimes during high workload situations I forget to turn it off which prevents the engine from generating full power and I don't want to be looking down to check the status. So I decided to design something to indicate when the carb heat is on. Now in keeping with the KIS principle it had to be simple, reliable, cheap to build and easy to install. This is what I came up with.

I used a military grade roller lever switch to send a signal to my DYNON system when the carb heat knob was moved. This would then indicate right on my EFIS if carb heat was on or off. It would be simple to fabricate, install and configure.

First I made a mounting bracket out of a bent a piece of spare stainless steel. I tapped the bracket so I could use #6 screws to hold the roller lever switch to the bracket. To limit vibrations felt by the switch I bonded a piece of spare rubber to the bracket with high heat silicone sealant. The carb heat box already had a convenient mounting location where I could use a #8 screw to mount the new assembly near the carb heat cable. By adjusting the assembly a little, the carb heat cable actuator would move the roller lever on the switch. I connected one side of the switch to ground and the other to an available contact pin on the DYNON EMS DB-37 module.

After some quick configuration, I now have a light blue indication on my EFIS when the carb heat is on. Simple, effective and a I actually enjoyed the project.

You can see photos of what I did on our web page ( www.puertoricoflyer.com ).

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