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[Fot] Adding type A OD

Subject: [Fot] Adding type A OD
From: gt6steve at aol.com (gt6steve at aol.com)
Date: Wed, 21 Feb 2018 11:34:21 -0500
I DO NOT like the on-off toggle switch for the OD's as I would downshift out of 
OD and forget to toggle the switch to off so I went back into OD as soon as the 
third gear switch was reengaged.  To combat this I used a standard electrical 
control scheme called "Three wire control" to engage the OD relay but drop it 
out when the shifter switch opened.  To re-engage overdrive a pushbutton would 
activate the relay and latch itself in so the pushbutton was just momentary.  
Does that make sense?  I can do a drawing if not clear.   Steve




-----Original Message-----
From: Jack Wheeler via Fot <fot at autox.team.net>
To: Greg Blake via Fot <fot at autox.team.net>
Sent: Wed, Feb 21, 2018 8:12 am
Subject: Re: [Fot] Adding type A OD



For all of my 24 years of SCCA racing, I had the O/D switch mounted on my shift 
lever.  Very convenient, and allowed for faster shifting.


Jack Wheeler

            




                        
                
                                        
                        On Wednesday, February 21, 2018, 4:14:18 AM EST, Greg 
Blake via Fot <fot at autox.team.net> wrote:                    
                    


                    


                    
Looking for what Bosch relay I could substitute for the standard Lucas part 
number. Originally is not an issue as this is under the dash in my race car. 



Also looking for advice on OD switch location for the race car. What do you 
guys like to use?  I was thinking a button on the steering wheel or on the 
shifter must be convenient. 



Appreciate the ideas. 



Greg



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