Medthods of removing crank nubs.

thejdw · 2008-01-20, 05:23 PM

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?

vanpaun · 2008-01-20, 06:07 PM

You should have gotten nubless cranks

thejdw · 2008-01-20, 06:16 PM

Quote:

Originally Posted by vanpaun

You should have gotten nubless cranks

big help, suggest were I would aquire those?

jamessd · 2008-01-20, 06:21 PM

Quote:

Originally Posted by thejdw

big help, suggest were I would aquire those?

Well, you could have got KH cranks or summat else nubless~??

c9ollie · 2008-01-20, 06:23 PM

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

thejdw · 2008-01-20, 07:08 PM

Does anybody here use ankle protection and has a recomendation?

Jerrick · 2008-01-20, 07:21 PM

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.

pdc · 2008-01-20, 07:43 PM

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.

kington99 · 2008-01-20, 07:45 PM

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.

pdc · 2008-01-20, 07:46 PM

Here's a before pic.

thejdw · 2008-01-20, 08:04 PM

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?

pdc · 2008-01-20, 08:43 PM

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.

surfer1024 · 2008-01-20, 09:12 PM

I removed the nubs off my qu-ax cranks. I used an angle grinder like Evan and it turned out fine.

thejdw · 2008-01-20, 09:36 PM

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?

forrestunifreak · 2008-01-20, 09:54 PM

What about using a shop/bench grinder wheel instead of an angle grinder?

2008-01-20, 05:23 PM	#1
thejdw elcycinu Join Date: Aug 2006 Location: UK Age: 23 Posts: 5,472	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? Attached Images __________________ I didn't spell it wrong, you just read it wrong!

2008-01-20, 06:07 PM	#2
vanpaun now Jeremy R Join Date: Sep 2007 Location: Massastupidchussets Age: 18 Posts: 1,572	You should have gotten nubless cranks __________________ /'\ Shopuni mountainuni Vimeo Channel Youtube Channel NE Trials sixsixone I miss my Sigpic [SIGPIC][/SIGPIC]

2008-01-20, 07:08 PM	#6
thejdw elcycinu Join Date: Aug 2006 Location: UK Age: 23 Posts: 5,472	Does anybody here use ankle protection and has a recomendation? __________________ I didn't spell it wrong, you just read it wrong!

2008-01-20, 07:43 PM	#8
pdc Registered User Join Date: Oct 2004 Location: Mount Solon Va. Shenandoah Valley Age: 52 Posts: 1,840	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. Attached Images __________________ "What doesn't kill you strengthens you, what kills you strengthens your mother"

2008-01-20, 07:45 PM	#9
kington99 Registered User Join Date: Mar 2005 Location: Warwickshire, UK Age: 27 Posts: 4,786	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. __________________ Dave - what a thoroughly post-modern subversion of the cycling genre -

2008-01-20, 06:23 PM	#5
c9ollie Registered User Join Date: Dec 2006 Posts: 126	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

2008-01-20, 07:46 PM	#10
pdc Registered User Join Date: Oct 2004 Location: Mount Solon Va. Shenandoah Valley Age: 52 Posts: 1,840	Here's a before pic. Attached Images __________________ "What doesn't kill you strengthens you, what kills you strengthens your mother"

2008-01-20, 09:12 PM	#13
surfer1024 Zachary Wenner Join Date: Oct 2006 Location: Chicago, IL Age: 21 Posts: 2,893	I removed the nubs off my qu-ax cranks. I used an angle grinder like Evan and it turned out fine. __________________ Videos: Tr1alz 2rialz Street 2011

2008-01-20, 09:54 PM	#15
forrestunifreak is in college. and on magazines. Join Date: Jun 2004 Location: Montana, USA Age: 23 Posts: 8,071	What about using a shop/bench grinder wheel instead of an angle grinder? __________________ [SIGPIC][/SIGPIC]

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