---------------------------------------------------------- KIS-List Digest Archive --- Total Messages Posted Sun 03/22/20: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:42 PM - Carb Heat Indication Mod (Galin Hernandez) 2. 08:04 PM - Re: Carb Heat Indication Mod (Robert Reed) ________________________________ Message 1 _____________________________________ Time: 07:42:12 PM PST US From: Galin Hernandez 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 ). ________________________________ Message 2 _____________________________________ Time: 08:04:12 PM PST US From: Robert Reed Subject: Re: KIS-List: Carb Heat Indication Mod Good job, that=99s why I went with fuel injection directly to intake p orts. Bob Reed Sent from my iPhone > On Mar 22, 2020, at 9:42 PM, Galin Hernandez wrote: > > =EF=BB > During certain times while flying Carburetor Heat is used to help prevent i cing and a possible engine failure. But sometimes during high workload situa tions 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 wi th the KIS principle it had to be simple, reliable, cheap to build and easy t o install. This is what I came up with. > > I used a military grade roller lever switch to send a signal to my DYNON s ystem when the carb heat knob was moved. This would then indicate right on m y 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 s teel. 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 pi ece 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 s crew to mount the new assembly near the carb heat cable. By adjusting the as sembly 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 a n available contact pin on the DYNON EMS DB-37 module. > > After some quick configuration, I now have a light blue indication on my E FIS 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 ). ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message kis-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/KIS-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/kis-list Browse Digests http://www.matronics.com/digest/kis-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.