Custom made Series II with Citroen suspension, Jag diffs, Inboard brakes, S/S chassis

**isuzurover** · 14th January 2011, 07:12 PM

Originally Posted by wagoo

Not really mycup of tea either but nicely put together. Articulation would probably be superior to a standard leaf sprung series .Transmission would be stronger too, but those weeny tyres shouldn't tax it too much anyway.The differentials appear to be hard bolted to the chassis.Rode in a few independantly suspended Ford M151 Jeeps in Vietnam with hard bolted differentials and the noise and vibrations through the bodywork to the interior were horrendous.

The swingarms look far too short for decent travel - I am not sure if it would better a standard 88".

I wouldn't like to bet on the durability of those diffs if you fitted decent size offroad tyres.

DS suspension combined with some stronger long swingarm axles like ford bronco IFS would be much better.

**JDNSW** · 14th January 2011, 08:04 PM

Originally Posted by isuzurover

The swingarms look far too short for decent travel - I am not sure if it would better a standard 88".

I wouldn't like to bet on the durability of those diffs if you fitted decent size offroad tyres.

DS suspension combined with some stronger long swingarm axles like ford bronco IFS would be much better.

The swing arms appear to be standard DS front suspension arms. These provide at least twice the articulation of a Series Landrover, possibly more. They are forged steel and carried in widely spaced taper roller bearings, about 2" diameter, tapering to around 1" at the outer end, and would compare in strength to the hockey sticks on a 110 - except there are two per side instead of one. In forty-five years of experience with DS Citroens, I have never heard of one bending except in a major accident. My DS was hit in the LH front wheel by a Statesman that drove through a stop sign - the suspension arms were undamaged, although the force transmitted through them distorted the frame, which cost a lot to straighten.

John

**wagoo** · 15th January 2011, 10:46 AM

Originally Posted by isuzurover

The swingarms look far too short for decent travel - I am not sure if it would better a standard 88".

I wouldn't like to bet on the durability of those diffs if you fitted decent size offroad tyres.

DS suspension combined with some stronger long swingarm axles like ford bronco IFS would be much better.

Aren't DS suspension diagonally or crosslinked to promote interaxle articulation ?
If they are Jag diffs they are Salisbury versions of dana 44.Volvo Laplanders (not c303) have these in a weaker lower ratio, and do ok on 9.00x16''s.
As you say longer swing arms would improve travel, but swing arms ala Ford Bronce have excessive camber change for good predictable handling.
I would like to see someone adopt a flipped version of the Jag rear suspension for better groundclearance, so that the driveshafts become the lower control arms and the original lowers become the uppers.
Wagoo.

**JDNSW** · 16th January 2011, 05:22 PM

Originally Posted by wagoo

Aren't DS suspension diagonally or crosslinked to promote interaxle articulation ?

Wagoo.

DS suspension uses a common hydraulic supply for the two suspension cylinders at each end. The pressure is controlled by a spool type valve connected to the centre of the sway bar which maintains constant level, subject to the driver control that moves the body of the valve to adjust height. Springing is provided by hydraulic accumulators at each cylinder, and damping by calibrated restrictors between the accumulator and the suspension cylinder. This means the only roll resistance is from the sway bar, and bump deflection is to some extent shared between sides on the same axle (limited by the flow restriction of a metre or so of 2mm tubing). System operates at around 10,000psi, so volumes of fluid displaced is quite small. The cylinder movement is small compared to the wheel movement, with a leverage of around 10:1.

John

Thread: Custom made Series II with Citroen suspension, Jag diffs, Inboard brakes, S/S chassis

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