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Old 2008-01-20, 05:23 PM   #1
thejdw
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Medthods of removing crank nubs.

After my ride today on my new trials uni with KH 2004 hub and qu-ax for KH cranks I noticed my ankles were bleeding. I've seen Evan's vid on removing nubs with an angle grinder, are there any other methods which can be used (tools ect..)? Will removing the nubs be a realy bad idea?
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Old 2008-01-20, 06:07 PM   #2
vanpaun
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You should have gotten nubless cranks
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Old 2008-01-20, 06:16 PM   #3
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Quote:
Originally Posted by vanpaun
You should have gotten nubless cranks
big help, suggest were I would aquire those?
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Old 2008-01-20, 06:21 PM   #4
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Quote:
Originally Posted by thejdw
big help, suggest were I would aquire those?
Well, you could have got KH cranks or summat else nubless~??
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Old 2008-01-20, 06:23 PM   #5
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go get your self a large mill. set the crank into the mill so that the "nub" is parallel to the mill. use a half inch N-mill and take off 50 thousandths a pass until you reach your desired high. be sure not to cut into the weld. remove the crank from the mill and take it to a bench grinder to smooth it out.

:]

take it to a machine shop and they can do it for you. lol
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Old 2008-01-20, 07:08 PM   #6
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Does anybody here use ankle protection and has a recomendation?
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Old 2008-01-20, 07:21 PM   #7
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Quote:
Originally Posted by thejdw
Does anybody here use ankle protection and has a recomendation?
Ive been using 661 ankle biters for a while now, and love them.

I first got them because when I first got my DX, I was hitting my ankle a lot when I was messing up on stairsets and lines. The ankle biters stop the bleeding, but if you get hit hard enough, you will still feel it. They are still worth it.

There was a period where I only had one pair of shoes, and I didnt want to use those for the ankle guards, so I just stopped wearing them, and corrected my foot position, and havent hit my ankle on any nubs since, just from a better posture.

But now that I have a second pair of shoes that can have the ankle biters in them, I use them on every ride, for those really awkward wrecks that hit my ankle into a ledge or rock or something.
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Old 2008-01-20, 07:43 PM   #8
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An angle gringer will work. You can also take them to a machine shop. The one near me did mine for $10. Here's a pic of KH/Summit cranks milled down and then using a rounded '04 KH crank bolt.
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Old 2008-01-20, 07:45 PM   #9
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A milling machine is your number one choice, your school may have on you can use, otherwise you'll have to find a local machine shop that will do the work for you, they usually charge around £25 an hour.
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Old 2008-01-20, 07:46 PM   #10
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Here's a before pic.
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Old 2008-01-20, 08:04 PM   #11
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Quote:
Originally Posted by pdc
An angle gringer will work. You can also take them to a machine shop. The one near me did mine for $10. Here's a pic of KH/Summit cranks milled down and then using a rounded '04 KH crank bolt.
nice, did you have any problems after? and it that bolt this kind?
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Old 2008-01-20, 08:43 PM   #12
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Quote:
Originally Posted by thejdw
nice, did you have any problems after? and it that bolt this kind?
Yep, that's the bolt. Darren also keeps them. No problems whatsoever.
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Old 2008-01-20, 09:12 PM   #13
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I removed the nubs off my qu-ax cranks. I used an angle grinder like Evan and it turned out fine.
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Old 2008-01-20, 09:36 PM   #14
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Quote:
Originally Posted by surfer1024
I removed the nubs off my qu-ax cranks. I used an angle grinder like Evan and it turned out fine.
did you cut out the extractor threads in the nub, was there any issue keeping the surface level?
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Old 2008-01-20, 09:54 PM   #15
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What about using a shop/bench grinder wheel instead of an angle grinder?
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