101 disk brakes

Just remember that the army vehicle (one of the protypes) in that pic (now owned by Iain Reed on AULRO) was on bar treads so not a lot of friction with the road.

With modern tyres with substantially improved grip the tyres can "drive" through the brakes making disks more relevant.

I certainly noticed the difference when I went from 9.00x16 conventional tyres where they were easy to lock up to 315/75R16s where they brake well but tend not to lock up as they have better grip on the road.

I last adjusted my brakes 6 weeks ago before going on a 2500km trip up through north central NSW and into Queensland. Took a few goes to get them adjusted but still pulled a little, left and right on the trip.

Yet driving around town now some 3000km later the brakes are not pulling up dead straight but there is a little brake pedal travel so it looks like they have balanced themselves out with a little further wear.

I have the disks to go on but my front axle needs also to have the king pins done, diff pinion seal, probably wheel bearings and seals and a locker added so I want to do the lot at once rather than doing the brakes first and the lot later.

Cheers

Garry

In the interests of the wider community; Could Iain be convinced to reproduce the moment in the still picture but this time record the whole thing on YouTube?

My front axles pretty shot too. I've started another thread on a Railko conversion I'm keen to pursue.

So do you think the pics are a fake or something :confused:

Has anyone ever investigated the front axle from an OKA, early ones came with Dana 60, disc braked and 16" wheels, not sure about the track width though.
Some are replacing with larger Dana series due to the OKA's weight.

Quote:

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Originally Posted by garrycol

So do you think the pics are a fake or something :confused:

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No, I it can see where you're coming from, I'd just say it if I thought That.

What I did think was a movie of it would just be so much more entertaining.

https://www.aulro.com/afvb/images/im...014/07/772.jpg


https://www.aulro.com/afvb/images/im...014/07/773.jpg

Quote:

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Originally Posted by puma130tc

Has anyone ever investigated the front axle from an OKA, early ones came with Dana 60, disc braked and 16" wheels, not sure about the track width though.
Some are replacing with larger Dana series due to the OKA's weight.

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I did look at this.
A friend has a OKA with a Dana 60 in the front and a Dana Seventy in the rear.
The track is different.
The OKA wheels are larger and it uses a open type unijoint arrangement which is more compact that the 101s C/V joint and therefore has room to fit a disc brake and caliper.
The 101 must run a C/V type joint because of its constant 4WD designed transmission.
Use of the OKA front axle with standard 101 transmission will viberate the steering wheel out of your hands especially when on lock.
https://www.aulro.com/afvb/images/im...014/07/769.jpg
https://www.aulro.com/afvb/images/im...014/07/770.jpg
https://www.aulro.com/afvb/images/im...014/07/771.jpg

Also the hub and wheel for set up is totally different between the two vehicles.
and therefore 8 stud wheels on the front and 6 stud wheels on the rear of a 101 if converted ?????.
Not worth the effort.
The Zeus conversion works.
It should be noted the 101s 6 stud wheel flange is very large as is the 6 stud PCD which therefore requires the inside of a 101s disc to be very large to fit over the hub.
The OKA gets the extra room by using 8 studs of a very small PCD and therefore the internal size of the disc can be much smaller.

Note the large internal diameter of the Zeus disc so it fits the 6 stud large PCD of the 101s hub.
https://www.aulro.com/afvb/images/im...014/07/766.jpg
https://www.aulro.com/afvb/images/im...014/07/767.jpg
https://www.aulro.com/afvb/images/im...014/07/768.jpg

https://www.aulro.com/afvb/images/im...014/07/765.jpg
Any conversion using standard 101s wheels ( which is the ideal way to do it) must be done the way Zeus has done it.
Look carefully at the disc, it is machined down between the running surface of the disc and the PCD plate just so its specially made small size caliper will fit in with a standard 101 wheel which must be 4 pot design to give similar pedal feel and a floating caliper just wouldn't have room to move and require a different brake booster to be fitted to give similar brake pedal feel.
Fitting a Disc set up to the front of a 101 is nothing like doing a disc conversion on a series rover or early defender.
Zeus got it right and is worth the money as other options are more stuffing around .
With all parts in hand a Zeus set up can be fitted in a day.
The working surface diameter of the disc of the OKA and the Zeus set up is similar.
The 101s large 6 stud PCD hub comes about by the Military need for a gun tractor which the 101 was designed as, to have possible interchangeable wheels with a gun or trailers it is designed to tow and why a Unimog wheel will fit onto a 101 as they are both military vehicles designed to tow.
The Zeus set up has little in the way of faults.
Pads are extremely easy to change and as I found the oil filler access to the C/V joint can be moved to the front of the C/V.
The disc on my 101 shows no wear and is a two piece set up so if it does wear it is not a big job for a machine shop to make a new one as the wear part of the disc is just that a flat disc.
This design greatly reduces any chance of Disc warping with heat too.
Have I sold you blokes yet ??????
I have looked at various options before jumping in at the Zeus.
Ron......... humble 101 nut.

Mmmmmm.. 19.5" rims and truck tyres!!! :D Still going to try a couple.. You're right Ron, you do get feedback with uni joints in the front when running full time four wheel drive, but surprisingly its not that bad. I've fitted full time transfer boxes to 2 series shorty's and am doing a third for the wife at the moment. The only time you feel it is on full lock in 1'st gear under acceleration.. something you shouldn't be doing anyhow. With the drums adjusted correctly, and good tyres, Im still not comfortable with the stopping power of a 101. I never was with the old one, but was too young to care! With this one, its even faster, I'm doing decent distance and plan to tow with it in the near future, so will have to do something. Still love the quality of you're pics! :)