This kit consists of a pair of new steering arms, a pair of longer steering tie rods and the various fittings and fitting instructions needed to complete the job. The kit corrects negative Ackerman angle.

TR's 2-3B were designed with very odd steering geometry insomuch as they have what's called negative Ackerman angle. Positive Ackerman is where the tie rod levers orientated such that when a line is extended from each swivel point via the outer ball joints the lines meet in the centre of the differential. This ensures that when turning, the inside wheel describes a smaller turning circle than the outer wheel (as you would expect). The result is called 'turn in' and is felt by the driver as the front wheels of the car being pulled in the direction of the steering input.
TR2-3B tie rod levers are orientated such that the lines mentioned above diverge rather than converge thus a standard car has -9° of Ackerman which means that the inside wheel describes a larger turning circle than the outer wheel (the opposite of what you would expect). The result is that the car displays understeer which is felt by the driver as the front wheels of the car not reacting to the steering input until rather more steering input is applied.
Our kit moves the outer ball joints outboard as much as is practical given the position of the brake disc or drum resulting in +6° of Ackerman, thus improving the steering geometry significantly.

The new tie rod levers incorporate a slight drop in the position of the outer ball joint designed to minimise bump steer especially where TR4A-6 type upper wishbones have been fitted to introduce the castor angle that these later cars benefited from.

This kit consists of a pair of new tie rod levers, a pair of longer tie rods and the various fittings and fitting instructions needed to complete the job.

2 x new design tie rod levers
2 x longer tie rods
4 x tab washer
4 x Nyloc nut
6 x plain washer
2 x split pin
1 x Fitting Instruction

This kit will also improve straight-line stability and steering response, provide turn in as opposed to understeer and improve or eliminated bump steer.
Owners that have already converted to rack and pinion steering but do not have corrected tie rod levers can use this kit (less the tie rods) to improve their current steering system.

These parts have been manufactured to our own original drawings; the tie rods have been made in the UK after years of research to ensure material and heat treatment are correct and that the manufacturer is able to produce a quality product.
There is not another kit on the market that can bring the benefits that this kit does.

Customers should note that the disc back plate will need modifying slightly to allow room for the ball joint as detailed in the fitting instructions or they can be left off. Similarly TR 2-3 owners who still have drum brakes may likewise have to make some small modifications to ensure a satisfactory installation

 

 

2 x new design tie rod levers
2 x longer tie rods
4 x tab washer
4 x Nyloc nut
6 x plain washer
2 x split pin
1 x Fitting Instruction

This part is listed on the following pages of the website, where further information and background reading may be found.

Featured Products » Featured Products
Suspension and steering » TR2-3B WORM AND PEG STEERING BOX SYSTEM
Information Sheets » IS0050 - Steering Geometery Improvement Tie Rod Levers TR2-3B

Our Steering Geometry kit has been well received since its introduction. Here is a typical email we have received: - 

Dear Sirs:

Just installed your steering kit in my "57 TR-3 and wanted to let you know it works well; feels more alive, turns in better, seems to track better, minimal fuss putting it in. Thanks very much.

Regards,

Raymond, California, USA

My TR is a joy to drive with your Rack and pinion  and rally suspension improvements. Mike G. Reading 2021