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drmini in aust
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PostPosted: Thu Apr 04, 2013 9:53 pm 
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Location: near Baulkham Hills, NSW
John Smidt wrote:
drmini in aust wrote:
@lmbm,
Geez, those hardness numbers of yours seem low!:shock: Have you calibrated the machine lately?

I tested a Karcraft comp one and a Heritage MG 4 synchro one last year, both were between 61-63HRC.

.

Doc If I send You one of My Layshafts and a Diff pin could You do a hardness test on them for Me Please


No problem John. I have access to two Rockwell testers in different places. :wink:

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John Smidt
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PostPosted: Fri Apr 05, 2013 7:02 am 
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Location: Windsor, NSW
Thank You very Much Kev, I will get them to You

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GT mowog
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PostPosted: Fri Apr 05, 2013 12:28 pm 
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lmbm wrote:
Once i managed to do to some hardness tests on few layshafts, below the results,
i'd say you will be fine with a good second hand A+ layshaft, they seldom wear.

- new pre A+ Australian MG Heritage layshaft 43 HRC ( sourced in 2008 )
- new Minispares A+ competition layshaft 43 HRC ( sourced in 2008 )
- used factory A+ layshaft from low milleage metro 51 HRC
- used factory layshaft from high milleage 4 synchro remote box 52 HRC
- new old stock pre A+ 4 synchro layshaft 55HRC

cheers
Luis


That's close to what I got too, however surface hardness is one thing but if the hardness layer is only a shell ie no depth, then then it won't matter how hard the surface is, the shaft will fail, ruining everything that runs on it. I gave up a while ago trying to find decent layshafts.

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John Smidt
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PostPosted: Sat Apr 06, 2013 3:28 pm 
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Location: Windsor, NSW
MattE wrote:
Bit of an update:
KC don't have stock of A+ ones for up to a week. If they did have stock, it wouldn't be the same material as their pre A+ ones.
Heritage MG and Mini King don't have the A+ ones either.
I've ordered a hardened EN36 one from MED in UK on Graham Russell's advice - thanks for your time on the phone Graham. A reasonable 46UKP.

Thanks again for the help.
Matt

Mini King are waiting for next batch of Aust Made EN36 stepped Layshafts
We do have EN36 4speed Sync layshafts in stock

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