For Cars mainly used for racing & rallying or where rear hubs & halfshafts are under very high stresses, eg where high torque engines are distorting the halfshafts leading to pad knock off.

Note: at least one DB2/4 started the 2020 Mille Miglia with out Hub & Halfhaft kit and finished with no problems., possibly 2 more DB2s were also equipped with the kits but we don't know what their number was or whether they entered / got an entry,

Because of the design of the hub, wheel & halfshaft assembly of a Salisbury 3HA &  4HA axle, the hub / wheel assembly acts as a large lever / bending load on the 12mm or so of unsupported halfshaft between the hub & outer hub bearing, this can cause the rear wheel to fall off, sometimes with disastrous consequences as in our case, this type of axle is called a std design axle.

This leverage also causes the halfshafts to fail between the outer bearing & the diff splines / diff unit because of the bending loads, which is the more common problem. This just causes the drive train to fail & the car grinds to a halt at best, at worst it can cause a large accident if in race traffic or cornering hard.

Our new design of Halfshaft, Hub Bearing Housing, Hub & associated items solves these problems, it converts the typical Aston, Jaguar, Bristol, Jensen, etc Salisbury axle (used on Opel Manta & Sunbeam Lotus and others) from semi floating hub to three quarter floating hub as it only uses one large dia double row bearing, this type of axle would then be as per an MG Midget / Austin Healey Sprite as shown in the photo- the wire wheel hub type (no. 50, 41, 48 & 47 axle shaft), this is very similar to existing Atlas or English axle designs only ours aren't manufactured by Quaife.

Available for Aston Martin DB2 early & late 3HA axles, DB2/4 with 3HA axle, we have sold 5 kits so far with another 5 on their way.

Jaguar MkI & Mk2 or any other Jaguar using Salisbury 3 or 4HA axle will be available early 2022 or one of the modern replacement units - no date yet ??

Aston Martin DB2/4 Mk II & MkIII 4 HA axle units will be available shortly - in early 2022

Jensen Interceptor & any Jensen with similar 4HA axles - Early 2022

Note that this system can easily be adapted for other vehicles using Salisbury axles (or other axles) with just some small redesigns.  

An expensive kit but cheaper than losing a complete car.

Advantages with Our Redesigned Rear Hub & Halfshaft Kit.

These replacement halfshaft units don't require any complex shimming of the taper roller bearing / halfshaft end float & several special tools, including a hub puller, halfshaft puller, DTI / Clock gauge & some kind of supporting arrangement to hold the clock gauge, they don't use a taper roller bearing, halfshaft bearing strengthening plate, outer hub seal carrier & seal or any paper gaskets on the axle ends.

The halfshafts are generally stronger without the stress causing keyway or the problem causing taper fitting arrangement. 

Our halfshafts can be easily be replaced without special tools in about 15 minutes with this kit, if a halfshaft does break it will only break between the hub bearing mounted on the end of the axle tube & the diff unit, the car will then roll to a stop.

Because the weight of the car via the hub & wheel assembly are supported by a large easily obtainable bearing mounted securely in a bolted / mounted housing on the end of the axle and the halfshaft only being used to transmit drive, higher cornering loads are then fed into the new hub unit not the halfshaft, of course the halfshaft also lengthens the life of the bearing.

Better design of rear hub, possibly exceeding 'Andron' style rear hub strength (all new hubs made since the early 1990's)

There are some other advantages, email us on fourashesgarage@btconnect.com

Parts supplied with kit

2 x high quality, high material spec halfshafts, 18 spline if using STD Aston 3 HA axle or 19 spline if using uprated halfshafts (or Jaguar 4HA solid axle) as fitted to the later MkII & MkIII models, these are without tapered fittings.

2 x bearing spacers

2 x bearing housings with drum backplate carriers suitable for Aston Martin DB2 & DB2/4 MkI & MkII models,  ( or Jaguar hub bearing housings with the DiscBrake  Caliper mounting)

2 x bearings

2 x inner hub seals

2 x inner hub bearing housing O rings

2 x outer hub seals for our new halfshaft / hub bearing housings.

2 x Aston outer splined hubs (a known weak point on Feltham Aston's splined hubs anyway) or Jaguar splined hubs for wire wheels or 5 stud (disc wheel mounting) hubs 

2 x special hub nuts

Note that parts supplied may change without notice.