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 Post subject: Re: Rear radius arms
PostPosted: Mon Oct 30, 2017 2:09 am 
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Joined: Mon May 07, 2012 6:10 am
Posts: 2462
Location: Big Red, Australia
Tim wrote:
The trailing arm in the moke is a couple of inches longer than a Mini one, so I assume that increases the leverage on the pin when the three chicks drop into the pothole.

Tim


They are the same ratio.


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 Post subject: Re: Rear radius arms
PostPosted: Thu Nov 09, 2017 11:33 am 
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Joined: Sat Jul 15, 2017 5:35 pm
Posts: 513
Location: Abingdon Oxfordshire
Here's something to make you all cheer. You know how we all go on about crap modern replacement parts? Well, stop there. Got a set of rear radius arm shafts from Rich at Mini Spares earlier this week and was at the Uni metallurgy labs to modify the lubrication system for our winter technical write up. After much spot facing, drilling attempts, more spot facing and grinding etc etc etc we eventually broke through the hardening into material that we could drill into with centre drill cutters. The depth of the hardness was .022" So just remember this when anyone tells you that the modern shafts are crap. Ruined several cutters and took a long time to just drill 2 cross holes in 1 shaft. The lab tech has banned us from the workshop for a week while he gets the blunted tools re-ground!!!

Sorry for complaining Rich!

And while we're here....... Can anyone see any reason why the inner shaft nut FNZ-508 and spring washer LWZ-208 shouldn't/couldn't be a nylock nut and flat washer


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 Post subject: Re: Rear radius arms
PostPosted: Thu Nov 09, 2017 11:53 am 
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Peter Laidler wrote:
Can anyone see any reason why the inner shaft nut FNZ-508 and spring washer LWZ-208 shouldn't/couldn't be a nylock nut and flat washer


how do you get it undone in service?

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should you wish, you can contact me on rich@minispares.com

'long beard boss'


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 Post subject: Re: Rear radius arms
PostPosted: Thu Nov 09, 2017 12:01 pm 
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Joined: Thu Jun 24, 2010 11:30 am
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Location: Oop North where it's dark & cold nearly all the time.
how do you get it undone in service?

Easy!

When the radius arm is rusted solid into the radius arm it will hold the shaft firm & the nylock can be undone without any bother :lol:

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(I'm a very friendly Lion called Parsley)


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 Post subject: Re: Rear radius arms
PostPosted: Thu Nov 09, 2017 12:42 pm 
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that's why BMC made them the way they did you see.

they knew that by the time it came to take them to bits the rust would be providing a vital part of the undoing sequence.

by removing the rust and replacing it with grease the job becomes far harder to do!

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should you wish, you can contact me on rich@minispares.com

'long beard boss'


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 Post subject: Re: Rear radius arms
PostPosted: Thu Nov 09, 2017 3:57 pm 
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Joined: Sat Jul 15, 2017 5:35 pm
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Location: Abingdon Oxfordshire
There's a serious side to this of course...... How did we undo the bluddy things with normal nuts and spring washers? Let me think about this............ IF I had rusty or sticky nuts I'd go to the chemist first...... Just joking... By definition, the nut on one side or the other would have to come apart. So I'd take that side spring washer off too, put the nut back on and tighten another nut against it, lock xxxxxxg tight together, hold with a spanner on each and unscrew the rusty or stuck nut. In real life of course, you're only replacing them because they're knackered!


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 Post subject: Re: Rear radius arms
PostPosted: Thu Nov 09, 2017 5:36 pm 
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Joined: Mon May 07, 2012 6:10 am
Posts: 2462
Location: Big Red, Australia
Peter, nice to know about the MS Shafts. I haven't tried them in a while but will revisit for sure. Did the lab do a Rc Test on the case?

rich@minispares.com wrote:
Peter Laidler wrote:
Can anyone see any reason why the inner shaft nut FNZ-508 and spring washer LWZ-208 shouldn't/couldn't be a nylock nut and flat washer


how do you get it undone in service?


For a while in Aust Production, they did fit them with a Nyloc Nut. They are a bit of a bugger to get undone, usually I remove the outer nut, fit a plain nut locked on the outer, undo the inner, then remove the out.


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 Post subject: Re: Rear radius arms
PostPosted: Thu Nov 09, 2017 6:37 pm 
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Location: N/E England Where the SAND is GOLDEN and the sea is always COLD!!
Spider wrote:
Peter, nice to know about the MS Shafts. I haven't tried them in a while but will revisit for sure. Did the lab do a Rc Test on the case?

rich@minispares.com wrote:
Peter Laidler wrote:
Can anyone see any reason why the inner shaft nut FNZ-508 and spring washer LWZ-208 shouldn't/couldn't be a nylock nut and flat washer


how do you get it undone in service?


For a while in Aust Production, they did fit them with a Nyloc Nut. They are a bit of a bugger to get undone, usually I remove the outer nut, fit a plain nut locked on the outer, undo the inner, then remove the out.

Hi Spider
It's the application of the force and not always the force required. ;)


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