C Foreword 3 - Titan Motorsport · Steering speed/ratio (mm of rack bar per column rev) 5. End joint options (clevis, compact or dauphine) 6. Gaiters 7. Clamps As every steering rack,

Titan Motorsport and Automotive Engineering Ltd www.titan.uk.net [email protected] +44 (0) 1480 474402

Page 2 of 18 06 January 2016

Bespoke Technical Spec V2.3

CONTENTS

Foreword ................................................................................................................................................ 3

Bespoke Standard Manual Steering Rack .......................................................................................... 4

Eccentric Housing........................................................................................................... 5

Fixed Centre Housing ..................................................................................................... 5

Housing Extensions ........................................................................................................ 6

Steering Speed ............................................................................................................... 6

End Joints ...................................................................................................................... 7

Adaptors ....................................................................................................................... 11

Clamps ......................................................................................................................... 12

Gaiters .......................................................................................................................... 13

OEM Replacement Standard Racks .................................................................................................. 13

Lotus Elise/ Vauxhall Vx220 / Opel Speedster .............................................................. 13

Alternative Manual Steering Solutions ............................................................................................. 14

Manual Steering Racks ................................................................................................ 14

Bevel Box ..................................................................................................................... 14

T-Type Steering Rack ................................................................................................... 15

Case Study - The 1000MPH Steering Rack ......................................................................................... 16

FAQ ....................................................................................................................................................... 17

http://www.titan.uk.net/




FOREWORD

With more than 30 years experience in the design and supply of bespoke steering solutions Titan Motorsport are market leaders

in manual steering solutions.

A wide range of solutions are possible and each design is unique to the customer. Titan representatives will work with the

customer to create a unique drawing and specification. Once the specification is agreed then machining of the cast housing, rack

bar and other detail can start.

In addition to manual steering solutions Titan also off electronic power assistance in various configurations – column power

assistance and rack assistance. Titan will work with the customer to design a bespoke steering solution to suit the customer

requirement.

OEM steering solutions are supported through to aftermarket with rebuild and service options. Spare parts are stocked to allow

rebuild shops to utilise the wide range of spares Titan carry for steering solutions.





CUSTOMISABLE MANUAL STEERING RACK

Using standard components, we can create bespoke solutions to suit your application.

Other material can be used on request, for example magnesium, for the housing.

In selecting a steering solution the customer needs to make some of the following key decisions;

1. Eccentric or fixed pinion (ratio interchangeable or not)

2. Pinion location centred or offset (single seater or clubman’s style)

3. Housing Extensions

4. Steering speed/ratio (mm of rack bar per column rev)

5. End joint options (clevis, compact or dauphine)

6. Gaiters

7. Clamps

As every steering rack, is either completely bespoke or using standard components, the price heavily depends on design

requirement. Please contact our sales team for more information.

Care should be taken to understand orientation for steering systems where the steering rack is in front of the king pin or behind

the king pin of the uprights – this will affect whether the pinion is above or below the rack bar.





ECCENTRI C HOUS ING

In this design the pinion is held in an eccentric housing which is adjustable. This means the pinion could be changed for a

different type in the future – for example if the customer wants to change the ratio (speed) of the rack using the pinion only (the

rack bar will carry over). This makes the eccentric housing perfect for car development or a change in driving style or application.

Titan Motorsport have 2 casting types to allow different pinion locations – centred and offset, so deciding how far to one side

your pinion needs to be will affect the original casting selection.

F IXED CENTRE HO USING

A more cost effective option is to select a fixed centre housing which is machined to accept one pinion. The downside of a fixed

centre housing is the pinion and rack cannot be exchanged for a different combination.

Titan Motorsport have 2 casting types to allow different pinion locations – centred and offset, so deciding how far to one side

your pinion needs to be will affect the original casting selection.





HOUSI NG EXTENSI ONS

If you require a longer housing on one side for example then extensions of 250mm, 350mm or 400mm can be included in the

design.

STEERING SPEED

The following range of standard pinions and matching steering bars are available:

Description Travel (mm/rev)

Steering Bar

Diametrical Pitch Pinion Teeth

14

6 36.8 Special order

7 43.0

8 49.1

9 55.2

10 61.4



12




8 57.3

9 64.5

10 71.6

11 78.8

12 85.9

Some combinations are shown as special order – please contact Titan Motorsport for more details and suitability.

To measure you existing solution it will be necessary to measure how far the end joint will move for exactly one revolution of

the pinion. How fast the wheels turn will then depend on geometry at the outboard end and how far from the king pin pivot the

arm is.





END JOI NTS

COM PACT JOI NT

They are generally recommended for use on lightweight vehicles such as single seaters and are available with different threads.

If not specified, the thread is right handed.

Description Part n°

MF8 x 1.0 A11-616-145-01-A3

MF8 x 1.0 LH A11-616-155-01-A3

M8 x 1.25 A11-616-145-03-A3

MF10 x 1.25 A11-616-145-02-A3

MF10 x 1.25 LH A11-616-155-02-A3

5/16” - 24 UNF A11-616-165-01-A3

5/16” - 24 UNF LH A11-616-175-01-A3

3/8” - 24 UNF A11-616-165-02-A3

3/8” – 24 UNF LH A11-616-175-02-A3





DAUPHI NE JOINT

Dauphine end joint are the all-purpose end type and are used on all vehicle. If required, an extension can be fitted to increase

the pivot length. Different thread are available as standard; if not specified, the thread is right handed.


MF8 x 1.0 A02-616-130-01-A3

MF10 x 1.25 A02-616-130-02-A3

MF12 x 1.5 A02-616-130-03-A3

MF12 x 1.5 LH A02-616-130-07-A3

5/16” - 24 UNF A02-616-130-04-A3

3/8” - 24 UNF A02-616-130-05-A3

7/16” - 24 UNF A02-616-130-06-A3





T ITAN TYPE JOINT

It is the most robust end joint produced by Titan and so make it suitable for road cars, saloon racing and off road vehicle.


5/16” - 24 UNF A02-616-102-01-A3

3/8” - 24 UNF A02-616-102-02-A3

7/16” - 24 UNF A02-616-102-03-A3





CLE VI S

If needed, clevises can be added to the steering rack bar.

Our standard clevis is: C99-619-388-01-AT

If these dimensions don’t suit your application, we can manufacture clevises to your specifications.

FLAT END S

In addition to end joints, the rack bar itself can be machined to you specifications. A common end is flatted ends.





ADAPTORS

Adaptors to suit the spline supplied on the pinion, which is 9/16” with 36 serrations.


Ø3/4” / 18.30mm to 19.05mm A02-621-111-21-A3

Ø5/8” / 15.1mm to 15.9mm A02-621-111-22-A3

Ø3/4” No bolt A02-621-113-01-AT

Ø5/8” No bolt A02-621-113-02-AT





CLAM PS

Along our standard steering rack, we manufacture clamps to bolt the steering rack to the chassis of the car.


36mm Clamp A02-619-197-00-A2

38mm Clamp A02-619-198-01-A2





GAITERS

In order to protect you steering, gaiters can be added to it. It will ensure a longer operation while keeping its performance.

OEM REPLACEMENT STANDARD RACKS

LOTUS ELISE/ VAUXHA LL VX220 / OPE L SPEEDST ER

Titan Motorsport manufactured and supplied steering racks for Lotus of superior quality. These racks are available through Titan

Motorsport directly and fit directly into the OEM car with no modifications. The standard rack is 2.75 turns lock to lock but a

quicker 2.5 turns lock to lock is also available.

A rebuild service is offered for these racks and a wide range of spare parts are stocked to allow customer rebuilds.


2.75 Turns RHD A11-610-101-01-A1

2.75 Turns LHD A11-610-101-02-A1

2.5 Turns Quick RHD A11-610-102-01-A1

2.5 Turns Quick LHD A11-610-102-02-A1





ALTERNATIVE MANUAL STEERING SOLUTIONS

MANUAL STEER ING RA CK S

A complete bespoke steering rack can be designed and manufactured if your needs don’t fit into our customisable range, for

example the pinion can be angled to the housing if needed.

Housings can be machined from billet aluminium but other material such as magnesium can be used.

Single ended steering racks, internal components only and other special constructions are always considered and undertaken.

BEVE L BOX

Available as part of a steering solution or individually.





T-TYPE STEER ING RA CK

The T-type steering rack is designed specifically for single seater race car and can be made either from casting or using billet

material. Here a bevel gear and component form extension housings allow different packaging installations.





CASE STUDY - THE 1000MPH STEERING RACK

Titan was approached in April 2012 by the Bloodhound project to design and manufacture a steering system for their land speed

record vehicle, with which they aim to achieve 1,000 mph.

Titan manufacture steering racks for a wide range of vehicles but the load requirements, environmental conditions and space

constraints meant that for Bloodhound, a more unconventional system was required.

“The steering requirements for the Bloodhound land speed record car are unusual as we have a 30:1 steering ratio and a

steering lock of 5 degrees, which required us to have a bespoke steering rack” commented Brian Coombs, Engineering Lead –

Mechanical Design of Bloodhound.

As co-operating closely with the project engineers was a necessity, Titan utilised the latest 3D CAD technology to share and

develop design concepts in a collaborative environment. One of the most crucial aspects in the design of the steering rack for

this vehicle is the extreme loads the system will be subjected to. Detailed finite element analysis was utilised to design the

housing, rack bar and bracket to ensure all components within the steering system are able to endure the high loads required.

The environmental conditions Bloodhound will experience are vastly different than those encountered by a car used in race or

road scenarios. Therefore, considerable design consideration was given to ensuring that the rack is sealed off to avoid its

operation being affected by any environmental elements.

The third important design consideration involved the vehicle’s highly aerodynamic nature. The steering rack design was

complicated significantly by the lack of available space. The Titan designers managed to overcome this issue by devising an

innovative system which allowed the pickup points for the track rods to be inboard of the ends of the rack bar and forward of

one of the bulkheads whilst keeping the rack behind the bulkhead. Having successfully designed the system, Titan was then

relied upon to ensure that all components were manufactured and assembled within the required time frame.

“Titan was the perfect company to help us with this design challenge, which they then manufactured and supplied to us very

quickly” said Brian.

Bloodhound recently took the on-schedule delivery of the system for testing, ahead of a possible land speed world record

attempt in 2015.





FAQ

Question 1

Approximately how much will a custom steering rack cost?

Custom racks start at about £500 and can exceed £1000 with some expensive options and machining details.

Question 2

How quickly can a custom steering rack be made?

The target is 3 weeks from point of order and sign off of the engineering drawing.

Question 3

What is the drawing charge?

This is charge Titan collect before any design drawings are made, and that drawing and spec for the steering is then owned by

the customer

Question 4

My rack needs servicing is this possible?

Titan stock a full set of spare parts for steering racks, including service items. Titan also offer a rebuild service for racks if you

would like to send the rack to Titan.

Question 5

I like the sound of power steering - can you help?

Titan offer a bolt on column assist electric power assist unit that is compatible with virtually all the manual racks supplied.

Alternatively Titan can design a solution for you.





Titan Motorsport & Automotive Engineering Ltd Unit 3 Harley Industrial Park

Paxton Hill St. Neots, Cambridgeshire PE19 6TA

www.titan.uk.net

[email protected]

+44 (0) 1480 474402



mailto:[email protected]

Documents

C Foreword 3 - Titan Motorsport · Steering speed/ratio (mm of rack bar per column rev) 5. End joint options (clevis, compact or dauphine) 6. Gaiters 7. Clamps As every steering rack,