The Greyhound -Photo 1

This is a view of the LHS of the JXD Hercules engine. As far as the manuals are concerned this is actually the RHS of the engine due to the back to front installation necessary in the Greyhound. Although the Generator does not look very big in this view they are in fact quite large and damn heavy.

Greyhound pic


The Greyhound -Photo 2

This is a view of the RHS of the JXD Hercules engine. As far as the manuals are concerned this is actually the LHS of the engine due to the back to front installation necessary in the Greyhound. Note the very slack generator drive belt!

Not visible in this picture is the hydraulic throttle slave as this is mounted on the crossmember over the clutch housing. Also hidden (by the side draft carburetor) is the automatic (thermostatic) choke unit which is mounted on the exhaust manifold. Quite a feature for 1942! The twin fans are a novelty as the only other single engine vehicle to use this idea that I know of is the Valentine Tank.

Note the primer line running along the intake manifold (the thin pipe with the hump in it).

Greyhound pic


The Greyhound -Photo 3

This photo of the drivers position is a bit deceptive due to the interior of the vehicle being all painted white except for the front hatch. It appears that there is quite a lot of room to the left of the clutch pedal; in reality there isn't as your boot brushes against a piece of near vertical armour that seperates the driver from the front wheel.

Above the foot throttle can be seen the fluid reservoir for the throttle master clylinder.

Prominent at lower right is the clearance hump for the front diff., the co-driver gets to sit with both legs firmly pressed together as there is not much room between the hump and the RHS armour.

Greyhound pic


The Greyhound Engine Bay -Photo 4

A not so great original image means this scan leaves a bit to be desired.

The front of the vehicle is at the top of the photo, the fans face the rear. Note the monstrous size of the battery; this was to provide reserve power for the valve radios. I use a small battery intended for a 2 Litre 4 cylinder car and use the spare space in the battery mount as a foot rest so that I can work on the engine sitting down. Surprisingly the little battery is quite adequate to turn over that big, heavy JXD.

Greyhound pic


Greyhound Turretless Hull -Photo 5

The greyound used virtually the same turret mounting system as the M3/M5 series Light tanks: no turret bearing ring at all. Instead 3 taper face bearings were used which bore on an equivalent taper machined onto the lower side of the turret. There are 8 hold down/centering roller/clamps fitted internally on the Greyhound and externally on the M3/M5 which serve to retain the turret. I have found that with these removed the turret very quickly runs off centre when turned until it falls off 1 or 2 of the support rollers all together.

In the centre of the picture is a white box and to the right of it is the fire extinguisher in its unusual bracket which has a section to protect the discharge nozzle.

Note the absence of any radio equipment. I have never been able to get a precise idea of which is the correct side to mount the radios. In my vehicle they are on the RHS as it showed evidence of a previous installation and I have seen 1 WW2 photo which showed a radio mounted in the RHS sponson. Likewise I have also seen radios mounted in the LHS sponson. My vehicle has a very large shell rack in this location which has sliding doors and takes up all available space.

Greyhound pic


Greyhound Top Down -Photo 6

Not a very good original has resulted in a very dark and not very sharp view. You can make out the 2 support leg directly to the right of the seats that form 2/3 of the turret basket (such as there is), the other leg attaches just beneath the gun mount.

Also visible is the turret position numbers painted on the turret clamp cover plates that go around the inside edge of the turret. There was a black arrow painted next to the gunners shoulder, NOT at the front of the turret as you would expect.

Greyhound pic


Greyhound Turret interior -Photo 7

Greyhound pic


Greyhound Underneath view -Photo 8

Here is what makes it go.

(F) Gearbox to transfer box drive shaft.

(B E H L) Output shafts

(C) Pillow Block over centre diff so that the design could be kept lower than would otherwise happen if 1 continuous driveshaft was used.

Note the connecting arms between the diffs and the transverse arm. All these together allow the entire rear suspension to be removed as a unit.

Greyhound pic


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