Logic overdrive devices.
I have read with some amusement all the too-ings and fro-ings on this subject with some correspondents making it all sound desperately difficult.
What is the background? Well, when Revington TR was called TR Spares Southwest in 1982 ish, I designed a device to allow me to change gear and overdrive at the same time specifically with racing in mind but obviously I found that the device was a fantastic improvement on all cars both road and competition. I called this device a ’Logic Overdrive device’ (sound familiar?)
Initially the device was constructed of basic electrics but has since been redesigned and is now fully electronic.
We recommend a light on the dash to identify the overdrive state. And it is worth noting that both negative and positive earth devices are available.
Two types of kits are available RTR1001K which is a basic unit suitable for both positive and negative earth and RTR1296NK, RTR1296PK which provide a facility to dim the indicator lamp independently for both day and night. The ‘N’ and the ‘P’ in these part numbers indicates negative and positive earth variants.
To find out prices and more, just click on the part numbers above or type these part numbers into the search box on our website www.revingtontr.com
That is the history and I can confirm these units have been sold by their thousands and continue to work faultlessly in many applications (not just TR’s) around the world, so now there is no need to go searching for components to build a device that may or may not work, it has all be designed for you and been field tested in thousands of cars for the last 30 years.
J. Neil Revington