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mad-mk1
 Post subject: subframes
PostPosted: Mon May 14, 2007 12:56 am 
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Location: barossa valley sa
hey gang

mini hydro subframes, rears, whats teh difference between normal run of teh mill ones and 67cooper s ones??

are there any

other tahn step drums???

cheers jamie

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drmini in aust
 Post subject:
PostPosted: Mon May 14, 2007 7:52 am 
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The Cooper S/Clubby GT hydro bags are a bit stiffer. And they have 5/8" rear wheel cylinders not 3/4". That's it. :wink:
I run a Clubby GT front one with a MiniMatic/Mini K rear, it works fine. 8)

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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mad-mk1
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PostPosted: Mon May 14, 2007 11:06 am 
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so to most it would go unnoticeable?

how hard /expensive is it to change to the 5/8th size?

thx doc

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Mick
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PostPosted: Mon May 14, 2007 11:51 am 
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Location: Under the bonnet son!
Same price for the cylinders actually.

i did hear that the brake bias valve was springed slightly differently as well to suit the smaller rear cylinders? Can anyone confirm this (I seem to remember Vizard carping on about it somewhere)?

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drmini in aust
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PostPosted: Mon May 14, 2007 1:18 pm 
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There are various limiting valve pressures that were used here in Oz but you could throw a hanky over the lot, there's not much in it.
After 40 years they all look the same.
Keith Calver did a writeup once on how to make them adjustable. 8)

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:
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mad-mk1
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PostPosted: Mon May 14, 2007 1:28 pm 
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but regency wouldnt notice...

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slinkey inc
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PostPosted: Mon May 14, 2007 2:43 pm 
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You do want the smaller break cylinders in the drums, with discs, the rears tend to lock up.

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