Sandringham 6x6

[jsf55]

The double cardens are normally used for extreme angles so might be needed ?

 

[sako243]

Doing a bit of research it's more to do with the fact that the diff and transfer box flanges aren't parallel so can result in nasty vibrations.

LR it seems later on phase the propshafts to combat this but the Stage 1 being "properly designed" got a double carden as the proper engineered solution for it. They then realised that they didn't need the complicated joint and phasing the yokes was good enough.

A bit of conjecture there I think but ties in with my understanding and the fact the Stage 1 did get HD stuff that got "weakened" with the 90 and 110.

 

[8ob]

On the 6x6 I had someone had fitted a set of freewheeling hubs to the third axle, that was to take out the axle wind up. Without that the whole back end is in bind most of the time. Might be worth fitting a set Ed, that looks like it’s pretty much irreplaceable, on mine it was just another shortened pinion running off the back of the 2nd axle, a bit crude but did work well.

Bob

 

[indy4x]

As @sako243 said, double cardons are usually used where flanges aren't parallel

Another vote for BAR Propshafts, been using them for the last 40 yrs, Andrew is super helpful and knows his stuff and has helped me out with some oddball stuff

Recently had 2 propshafts retubed by him for my Jeep

 

[Cobbler]

Doing a bit of research it's more to do with the fact that the diff and transfer box flanges aren't parallel so can result in nasty vibrations.

LR it seems later on phase the propshafts to combat this but the Stage 1 being "properly designed" got a double carden as the proper engineered solution for it. They then realised that they didn't need the complicated joint and phasing the yokes was good enough.

I’ve got a prop for the front of a 109 in the shed, it was fitted to my son’s 90. It caused some head scratching & confusion as the spline markings were out of phase, but had been assembled in phase. I think somewhere in the past, someone had one & thought “that’ll fit” & used it. The whole vehicle was a bit of an oddity, it was originally a diesel, converted to petrol & there was an 3 litre Essex engine fitted. Anyone want a 109 prop shaft?

 

[seriesonewelder]

Anyone want a 109 prop shaft?

Yes please, put my name on it pending collection I guess?

 

[sako243]

Another vote for BAR Propshafts, been using them for the last 40 yrs, Andrew is super helpful and knows his stuff and has helped me out with some oddball stuff

He was very helpful when I spoke to him whilst waiting for the brat to come out of school one day - after a bit of getting onto the same page he was fairly sure that he had everything required on the shelf to make up a new prop for the front but asked if I could run the prop up to him to double check things in person. I was planning on getting him to ideally make up 3 new props and where possible use 1310 UJs across the board to keep spares down. I usually end up having to change a UJ in the middle of a Scottish hillside or somewhere equally remote despite greasing them regularly and checking them before trips like that .

On the 6x6 I had someone had fitted a set of freewheeling hubs to the third axle, that was to take out the axle wind up. Without that the whole back end is in bind most of the time. Might be worth fitting a set Ed, that looks like it’s pretty much irreplaceable, on mine it was just another shortened pinion running off the back of the 2nd axle, a bit crude but did work well.

It had a set of free wheeling hubs on the middle axle and I didn't like / rate them - and then broke them without much effort, possibly if they'd been fitted to the rear then I might have had a different opinion. The middle axle has the biggest leaf pack on it by a long way and thus takes most of the weight of the rear of the vehicle so around here it was pointless running the freewheeling hubs on the middle axle as we couldn't even get out of our drives without spinning wheels due to lack of drive. I haven't tried to see whether they'd work on the rear axles being a 24-spline Salisbury.

Back on post 641 I've recently acquired a 3D scanner so I'm going to strip down the 6WD casing and 3D scan it. The concept on the front drop box is quite straight-forward, in fact I suspect one could build one out of plate / turned shafts fairly easily and weld it to a machined down diff casing. I reckon there's plenty of space with a little ingenuity to introduce a dog-clutch or selector fork style arrangement on either the middle-rear idler gear or the rear output gear. Hell basically the same setup as the freewheeling hub would work - basically a spring loaded gear that slides in and out to transfer drive through to the output shaft. It'd have to be on the output gear (top left in the photo below).

Or possibly even on the through-drive to the rear axle.

 

[sako243]

I’ve got a prop for the front of a 109 in the shed, it was fitted to my son’s 90. It caused some head scratching & confusion as the spline markings were out of phase, but had been assembled in phase. I think somewhere in the past, someone had one & thought “that’ll fit” & used it. The whole vehicle was a bit of an oddity, it was originally a diesel, converted to petrol & there was an 3 litre Essex engine fitted.

Sounds like this thing - factory built with a 3.5 V8 petrol, V5 stated 5.7l diesel, bought with a 2.8 I6 diesel and now a 4.6 V8 petrol. By and large everything has been Stage 1 V8 / 1 tonne which has made sourcing things easy enough (got some great parts guys in the local LR "specialist"), the only thing that's a bit special so far as been the middle axle (basically a modified Series 3 rear) and the chassis has been chopped about obviously. Aside from that everything has been a factory LR part. Even the middle axle internals have been standard bar (so far) this drop box which is just a set of thrust bearings and that's about it - we haven't identified the gears yet.

 

[Cobbler]

Yes please, put my name on it pending collection I guess?

It’s stripped of the universals from what I recall, yes collect only from GL6. Come & take it away, but if ok with you I would like a small donation to Prostate cancer charity.

 

[Cobbler]

@seriesonewelder pm sent regarding prop