101 disk brakes

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Originally Posted by 101 Ron

I have looked at various options before jumping in at the Zeus.
Ron......... humble 101 nut.

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Ron,

just what did you see as the other options ? Living with the idea I might have missed an option won't be easy.


Steve

1/ fitting some other landrover disc brake set up or using after market disc set up for a series /defender landrover.
2/OKA brake set up
3/ Ford F 100 brakes
4/ late model jeep and earlier jeep wagoner and early Jerokee with dana live axle.




Zeus wins on all of the above........on cost and less stuffing around and no trial by error work to make things fit and uses standard axle/hub and wheel.

The only other real option is to fit a live axle from a rangerover/defender as a whole unit and if you are going to do this you may as well add coils.
Engineering cert will be required and you will loose the 101s strong axles.
Wheels would have to be special offset to suit the above and would have to be added to the cost.

The pic everyone keeps referring to was new brakes with new asbestos linings and probably a single application on cold brakes.

Not the same as driving down a mountain pass towing a heavy trailer, or doing multiple successive water crossings.

Drums are horrible on any 4x4 that is used as intended in steep terrain, or for towing or water crossings.

Quote:

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Originally Posted by 101 Ron

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.

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Other than having to finish the calliper engineering to get them to fit I can't see anything that would stop me buying a Zeus kit taking into account; whether I could afford it. At some point in the future , we will run out of Drums. Like we have manifolds.

I'd like to see if I could produce a competitively priced alternative. I think if the price was right people may move to disks. If only to save the hassle of shoe changing and adjusting.

Right now I'm wondering what material to make my disks out of? I remembered Ron's comment here about getting the disks made locally. I wondered if what they were made of was common knowledge there ? I have a choice of four steels which will all need treating but a clue as to which may be better in this instance may cut the development time.

Steve

Quote:

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Originally Posted by 101 Ron

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.

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Not true, Jeep and the other US manufacturers have been running open knuckle uni instead of CV front ends with full time 4WD since the mid seventies without issue, so that's not a deal breaker, but if I had a 101 I'd look seriously at what you did too.

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Originally Posted by bed_bug

I'd like to see if I could produce a competitively priced alternative. I think if the price was right people may move to disks. Right now I'm wondering what material to make my disks out of? I remembered Ron's comment here about getting the disks made locally. I wondered if what they were made of was common knowledge there ?

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I'd be sourcing a disk that suits rather than making one... Time spent making them will hike the price of your 'kit'.. There's a 101 near to me which has disks all round and they're not Zeus.. I'll ask the question as to what the front disks and callipers used are off. It would be a lot easier to use 'off the shelf' parts IMO. :)

Quote:

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Originally Posted by bed_bug

Right now I'm wondering what material to make my disks out of? I have a choice of four steels which will all need treating but a clue as to which may be better in this instance may cut the development time.

Steve

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Usually discs are made from cast-iron, not steel. Check out Disc Brake Australia to read their specifications.

I agree with Simon that buying a suitable disc with warranty, is an easier and safer way to go, unless you have a foundry; testing equipment; an engineer and public liability insurance,

Cheers Charlie

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Originally Posted by chazza

Usually discs are made from cast-iron, not steel.

Cheers Charlie

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Hi Charlie,

I think you will find they are cast steel (not sure of grade) rather than cast iron.

Made some discs back in the seventys to suit series 2 Turned up a wooden pattern and had them cast in SG cant spell sperodical graphite:) You can flog that stuff with a 14 pounder and not break it Worked well

The SG was what was used by Zeus for their calliper castings. After visiting a few machine shops today with their stuff as an example; I get the feeling their disks were probably SG too.

I'm not keen on me running the casting process on any of the parts. The cash injection into tooling, to get a return, the castings rejection rate, the quality control, its not got a lot going for it really.

I found [ame="http://www.jfe-steel.co.jp/en/research/report/012/pdf/012-11.pdf"]this article[/ame] on the Web. Martensitic Steel is being used in Disks. It would be easy to trial that.

However if there's a disk and calliper out there that's

a) an effective and appropriate engineering solution

b) is going to be available for a few years

c) is cost effective

Then it could be a contender.

Simon, if you can find out what that other 101 is running then I'll pursue it here.

I've put it all to one side for a week.

The only downside to adopting existing parts could be the supply cut off date. But its not as if we haven't been there before.


Steve