Laycock overdrive - Speedo drive

NZ28ModelA

NZ28ModelA

Senior Member
Greetings fellow A Drivers!

I had sourced a spare driveshaft and torque tube and Laycock overdrive from a Triumph gearbox and had them mated together by a local engineer. i will be fitting it to my pickup in the following few weeks.

Can someone please tell me where I attach the speedo drive, andwhat we do to keep the speedo accurate?

All help is appreciated

Kindest regards

Steve
 
I thought originally it was in the tail housing on the laycock
there are speedo gearboxes for truck rears that are 2 speed
 
My is hooked up to the original Model A setup on the torque tube, when in overdrive it's 10 miles an hour slower than the speed your going.
 
We bought two from a fellow near Shafter/Bakersfield, may have been "Dave" something. His had a connection that ran off the back of the Laycock and tied together with the Model A and was very accurate. Someone chime in with his contact info, I have misplaced it. (Brentwood Bob may help?) I would love to buy another. Great units, one switch operation if you create the failsafe as I did in the latest Restorer, for my Borg Warner O/D. Silent and smooth.
 
Rich Little is THE Laycock overdrive guy, lives near Bakersfield CA phone is 661-809-3451.
The over drive has a speed takeoff point,just need a speedo shop to make you a longer cable. The speedo gears are color coded, I thing mine is black, which matches the speedo very close. Other colors are available.
Enjoy
 
Thanks Herb for the info on the color of the drive gear. My OD is off about 15 MPH and I figure I need to change that gear. I will keep my eyes open for a black one.
 
Steve,
If you were to provide your email address I will pass it on to a friend in Auckland who has sorted my Laycock speedo drive for me. He is not on this forum but has offered to help. Cheers Gavin
 
NZ28ModelA said:
Greetings fellow A Drivers!

I had sourced a spare driveshaft and torque tube and Laycock overdrive from a Triumph gearbox and had them mated together by a local engineer. i will be fitting it to my pickup in the following few weeks.

Can someone please tell me where I attach the speedo drive, andwhat we do to keep the speedo accurate?

All help is appreciated

Kindest regards

Steve
Click to expand...
Hi Steve - Give me a call on 0274949905 and I may be able to tell you if you can run an accurate speedo or not - I run one which is absolutely correct in both speed and distance Steve Driver
 
Hi Steve
Give me a call on 0274 949905 - I may be able to tell you if you can or cannot do what you want - I run one as true as --
Cheers Steve Driver
 
Herb Concord Ca said:
Rich Little is THE Laycock overdrive guy, lives near Bakersfield CA phone is 661-809-3451.
The over drive has a speed takeoff point,just need a speedo shop to make you a longer cable. The speedo gears are color coded, I thing mine is black, which matches the speedo very close. Other colors are available.
Enjoy
Click to expand...
Bratton's sells both 89" and 113" speedometer cables for AA trucks both keyed end and square end. This is what I used on the output end of my home-constructed Volvo overdrive.
George
 
The colored Ford speedo gears described in the attached article are used in the Mitchell overdrive. They may be the same as used in the Volvo overdrive. They are apparently available from a Ford dealer.

Tom Endy
 

Attachments

Amyth said:
Hi Steve
Give me a call on 0274 949905 - I may be able to tell you if you can or cannot do what you want - I run one as true as --
Cheers Steve Driver
Click to expand...

Thanks Steve.. I will give you a call.. I still have to collect it from the engineer and fit it.

Kindest regards

Steve
 
Thank you all for your help with this.. I would prefer to keep the speedo accurate if i can.

I appreciate all your input.

Kindest regards

Steve
 
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