Throttle Linkage

Getting closer to running the car with the body on so time to address the throttle connection. Different builders have approached this in different styles but the key messages I picked up from the forum were:

• Need strong enough return springs to fully close the throttle and raise the pedal.
• Need to avoid any side load on the throttle spindle - to avoid wear on the bearing.

Some guys have bought linkage kits between £30 - 50 whilst others have manufactured one. From what I can see, the guys who have bought kits have had to modify them for height etc so I thought I might as well go down the fully custom route.

I built a prototype out of 1.5mm aluminium along with some scrap aluminium angles to prove it out then built the final version from 5mm aluminium plate. A 250mm x 125mm plate from the local stockist was £3.
I used a 6mm cable adjuster and two return springs from CBS.
I'm using a universal cable from halfords - this was only about £3 and works really well, partially as I found a route that avoids any severe bends.
Final upgrades are to add a rubber cable bellow ( on order from CBS)  and to improve the cable connection to the throttle lever.

This design keeps the forces in line and avoids a high load on the spindle bearing

In situ - cable bellow not fitted in this picture

Looks quite neat - hidden by the air cleaner