Cutting down an XTR chainring spider
- Thread starter dyna-ti
- Start date
Sorry WD. Its just a wee spider project, im not actually intending to do anything with it.
Oh aye :? bit quiet about that
I only saw the oneishaw":1kevqq2c said:
ishaw":1kevqq2c said:After replying earlier I did a quick Google for 112 bcd rings and found a middle ring on ebay. Took a punt thinking it would go for silly money.........
Oh aye :? bit quiet about that
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MRGRUMPY
Senior Retro Guru
Re:
I use m951 cranks on my singlespeed.I got a spider from a set of lx cranks as the spline pattern is the same.
However,the lx spider is much thicker than the xtr item,so I machined it down a bit and,hey presto,straight on,choice of chainrings in all sizes and colours and no creaks or problems for the last 3 months.
I use m951 cranks on my singlespeed.I got a spider from a set of lx cranks as the spline pattern is the same.
However,the lx spider is much thicker than the xtr item,so I machined it down a bit and,hey presto,straight on,choice of chainrings in all sizes and colours and no creaks or problems for the last 3 months.
Snapped off the remaining teeth with a set of moles as the less metal to grind off. then took it back to about 2mm from the lip as a rough guide.
From there im using a belt sander as this is quite soft, not chattery and easier to hold the ring flat against the top with the sander lying on its side. just a matter of turning the ring as you go.
Ill do another pic of the edge after the belt sanders done its work. About 1/2 ways through at the moment. :?
The block ive the ring on for the pic is a carborundum stone. Alloy clogs the wheel and the stone dresses the grinding wheel and removes the alloy particles by grinding the stone itself back.
From there im using a belt sander as this is quite soft, not chattery and easier to hold the ring flat against the top with the sander lying on its side. just a matter of turning the ring as you go.
Ill do another pic of the edge after the belt sanders done its work. About 1/2 ways through at the moment. :?
The block ive the ring on for the pic is a carborundum stone. Alloy clogs the wheel and the stone dresses the grinding wheel and removes the alloy particles by grinding the stone itself back.
