Thread: Life of Puma Rear Diff's

Here are a couple that came up.




If this is a bridge or truss what is meant by laminated?

Originally Posted by slug_burner

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If this is a bridge or truss what is meant by laminated?

Laminating means tubing the axle housings internally or plating them externally. Laminating adds a lot of mass for little increase in strength (in comparison to a well designed truss).

Originally Posted by isuzurover

Series 3 sals has 5.6mm wall tubing (can't see why a 110 would be thicker).

Most US axles are only 6.3 mm wall.

I've noticed on some 110s that the right hand axle tube had an integral forged flange as shown in Bens photo, whilst the left hand side axle tube had the flange friction welded on. The right side tube is the same length as series 3s, so maybe Salisbury were using up surplus short side axle tubes for a while.
Bill.

there would be no point laminating a Dana/Sals type diff, as it is the tubes pulling out of the cast center section that is the problem....of all those trusses shown, to me they look like alot of weight for little gain. The Dana/Sals housing is its let down. You cant remove the diff easy and they suck to strengthen. Thicker stonger tubes would be the go.

enter the sixty9....

In the Sahara Series vehicles up to about 1973 had a reputation for breaking the tubes.
I was told by Neil at Suttons in Alice Springs that the Series Army Land Rovers had tubes pressed into the axles making them stronger than the Civilian ones.

I presume everyone has seen this

Jordan Rover-Tech :: Jordan Rover-Tech - Perth, Western Australia

to get back on topic, latest thoughts are :

concept : stronger drop in diff for 110 rear

thoughts :

it's the ring and pinion thats the problem,

keep 24 spline shafts, these were good enough for the salisbury and we stock HD which are even stronger

the existing locker is as strong or stronger than the HD shafts so why not keep it ?, if we can use our P38 varient this will also allow you fit the stock 4 pin or any other centre you desire, the centre is never the problem,

make a new ring and pinion similar to the rover, ie long pinion but with approx 1.5" low hypoid offset, will check but this should increase strength considerably,

make new housing to suit, design casting so it can be machined for P38 or rover application,

new shorter prop will be required due to longer pinion,

thoughts ?

Dave

now your the sales guy and im just the wannabe dreamer so take with as much salt as required:

If the P38 type housing allows for a bigger dia Ring gear, I personally would not comprimise it by making it fit into a Rover type housing.

Thoughts?

Sounds like a good compromise Dave, personally I'd just like something a bit stronger and more reliable than the factory diff, with an optional locker, that is quite easy to fit.

A new center and prop sounds much better than retrofitting a Sals, (including any ABS woes), and then welding girders to it. (Just my 2c ).

Cheers,

Tim