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PostPosted: Sun Aug 11, 2013 11:19 pm 
Old School Hero

Joined: Thu May 13, 2010 4:07 pm
Posts: 197
Location: Sussex
BITD I remember milling some slots on the insides of my XT cranks to lighten them, but I haven't seen any in ages. I wasn't the only one who had done it, many in the local MTB club had done the same. None of us broke them, but I was about 3 stone lighter then.

Is anyone riding milled out cranks still?

I just brought another cannondale and the XT brake levers have a slot milled in the handle bar clamp which was another weight weenie trick.


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PostPosted: Sun Aug 11, 2013 11:44 pm 
Retro Guru

Joined: Sun Apr 25, 2010 10:07 pm
Posts: 1327
I personally milled 12mm slots along my 93 xt crank arms and they were lighter,looked cooler and never failed.Only reason it wasnt done commercially was time and tooling costs.I also skimmed a carbide cutter(took 5 minutes setting up and 20 minutes machining) over a set of 95 LX cranks and they looked super trick,identical to big buck cnc exotica.People paid well for an hours work on a mill/lathe I was a busy boy back then :)


Last edited by 66 triumph daytona on Sun Aug 11, 2013 11:54 pm, edited 4 times in total.

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PostPosted: Sun Aug 11, 2013 11:49 pm 
Retro Guru
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Joined: Thu May 03, 2012 7:13 pm
Posts: 2574
Location: The Cock Inn, Tillett, Herts
Most cranks are forged and it wouldn't be difficult at all to design the tooling to stamp hollows, recesses etc to save weight. I would suspect fears over litigation are the motivation for not doing so - better to have an ounce too much metal than an ounce too little if you don't want the families of the dead suing you.


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PostPosted: Mon Aug 12, 2013 7:08 am 
Retro Guru
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Joined: Fri Sep 19, 2008 4:37 pm
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Location: North West
littleblackflash wrote:
I just brought another cannondale and the XT brake levers have a slot milled in the handle bar clamp which was another weight weenie trick.


Image

WD :D


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PostPosted: Mon Aug 12, 2013 7:16 am 
Retro Guru

Joined: Fri Dec 28, 2012 4:57 pm
Posts: 2481
Location: South and East of York
Some Whites
viewtopic.php?f=2&t=265724


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PostPosted: Mon Aug 12, 2013 8:04 am 
King of the Skip Monkeys
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Joined: Wed Nov 07, 2007 4:34 pm
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Location: Moomin Valley
Yes, I rember lots of the then 'new' low pro LX cranks being polished and drilled to within an inch of their lives. Big in the 1970's too with road parts

Image

Image


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PostPosted: Mon Aug 12, 2013 8:35 am 
Gold Trader / MacRetro rider
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Joined: Sun Apr 02, 2006 1:03 pm
Posts: 11796
Location: Returning
You mean like these ?
Image

Image

The cranks on this were milled away quite a bit
Image

As we're most other bits

Image


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PostPosted: Mon Aug 12, 2013 8:49 am 
Retro Guru
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Nice 8)


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PostPosted: Mon Aug 12, 2013 5:12 pm 
Old School Hero

Joined: Thu May 13, 2010 4:07 pm
Posts: 197
Location: Sussex
I was thinking of slotting my cranks, not milling them as much as those above.

Although I do like them.


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PostPosted: Mon Aug 12, 2013 5:24 pm 
Retro Guru
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Joined: Sun Mar 14, 2010 2:33 am
Posts: 2936
Location: daaan saaaf
Used to see a fair amount of "drillium" on time trial bikes back in the 80s, brakes, seat posts, stems, derailleurs and cranks that were more hole than metal. When well done it looks great, but I'm not sure how safe it is. :shock:

Image

Lots more: http://www.google.co.uk/search?newwindo ... 0QWzr4DYDA


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