Matronics Email Lists :: View topic - Infinity grip switch driving S702 starter relay

Matronics Email Lists
Web Forum Interface to the Matronics Email Lists

Get Email Distribution Too! FAQ Search Memberlist Usergroups Register

Profile Log in to check your private messages Log in

Infinity grip switch driving S702 starter relay

Matronics Email Lists Forum Index -> AeroElectric-List

View previous topic :: View next topic

Author Message

recapen(at)earthlink.net
Guest

Posted: Tue Mar 03, 2015 5:09 am Post subject: Infinity grip switch driving S702 starter relay

Anyone else using an Infinity grip switch to actuate a S702 starter relay?



According to the specs of the Infinity grip switches, the contacts are rated at 6Amp.

 	  Quote: 	
		  From the B and C site, the S702 has a 2.5Ohm coil - so the math at 14volts works out 

to 5.6Amps...and that would be a max since the battery would provide less at cranking 
	


time.



The numbers say it should be OK - I'm looking to find out if anyone is doing it for 

real - and how is it working for you?



Thanks,

Ralph Capen

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

recapen(at)earthlink.net
Guest

Posted: Tue Mar 03, 2015 5:50 am Post subject: Infinity grip switch driving S702 starter relay

Interesting - I'll look in to this....

How many are out there interfacing the Infinity grip switch to the Starter relay?



Still want to hear if anyone is using my stated configuration though....



Thanks





--

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

recapen(at)EARTHLINK.NET
Guest

Posted: Tue Mar 03, 2015 6:40 am Post subject: Infinity grip switch driving S702 starter relay

Linn,



Good points made!



I currently have it on a relay that the hand-grip activates with a safety interlock 

switch - my line of thinking is to simplify by removing the relay and driving it direct.



My initial line of thinking for putting it on the hand-grip was for an in-flight restart -  

which would require one hand on the stick while the other works throttle and mixture.



What I currently have works very well - but it is complex and I am trying to simplify...

Looking for evidence of the problem you alluded to.



Thanks,

Ralph

--

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

carl.froehlich(at)verizon
Guest

Posted: Tue Mar 03, 2015 6:55 am Post subject: Infinity grip switch driving S702 starter relay

Ralph,



On the RV-8A the first version had the bottom push button on the stick being

the start button, providing power to the starter solenoid.  This button does

not have the capacity to operate the starter solenoid directly.  I installed

a small 12VDC relay (100ma coil, ~$1.50 from Allied Electronics) in the

circuit such that the stick button operated the relay, the relay then

provided power to the starter solenoid.



But - this setup was quickly changed as twice during the first flights I

inadvertently bumped the stick start button while the engine was running.  I

kept the relay set up and just added a small momentary pushbutton out of the

way at the top of the right side switch/breaker panel to use instead of the

stick button.  



On the RV-10 I just used the standard 10amp panel pushbutton for engine

start to directly provide power to the starter solenoid.



Bottom line - recommend not using the stick buttons to operate the starter

solenoid.



Carl



--

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

recapen(at)earthlink.net
Guest

Posted: Tue Mar 03, 2015 7:16 am Post subject: Infinity grip switch driving S702 starter relay

Carl,



Thanks for your input.



I have a secondary safety switch to prevent the accidental activation along 

with the relay like you described currently installed.

My intent was to simplify by removing the relay.  Sounds like my best bet 

is to leave it as is!  It works great for me.....



Ralph





--

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

recapen(at)earthlink.net
Guest

Posted: Tue Mar 03, 2015 7:17 am Post subject: Infinity grip switch driving S702 starter relay

David,



Thanks for the info.  I'll probably leave mine as is since the relay and safety switch work well!



Ralph





--

- The Matronics AeroElectric-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?AeroElectric-List

Display posts from previous:

	Matronics Email Lists Forum Index -> AeroElectric-List	All times are GMT - 8 Hours
Page 1 of 1

Jump to:

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum