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2011-03-19, 02:33 AM
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#1 |
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Unicyclist Chris .
Join Date: Aug 2009
Location: On my laptop doing something unicycle related.
Posts: 552
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Drilling KH Moment Cranks?
Hiya all!
Found this vid with awesome looking drilled moments. You can see them at 1:50 Im looking at drilling my old Moments to save tome weight. How do you do it? what machinery is required and is there a special method?
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-Clean Swabs "The only way to becoming a great unicyclist is to get back up and do it again" - B.S. Last edited by BoffyTheUnicyclist; 2011-03-19 at 02:37 AM. |
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2011-03-19, 02:45 AM
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#2 |
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Street
Join Date: May 2010
Location: pueblo west colorado
Age: 20
Posts: 916
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i havent done it myself but i have seen some that just have holes drilled in them. I would say that a drill press would be a tool that would help out tons and help keep the holes nice and straight.
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Team MAD4ONE
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2011-03-19, 03:06 AM
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#3 |
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max
Join Date: Apr 2009
Location: kingston, ont
Age: 19
Posts: 829
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I got drilled cranks from Will Riley on my flatland uni now, it doesn't feel like the strength has been weakened at all..
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2011-03-19, 03:47 AM
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#4 |
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Pedal Pedal Crash
Join Date: Oct 2002
Location: Minneapolis, MN
Posts: 1,391
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I drilled my moment (150's), with five 5/8" holes in each crank. I used a drill press a clamped the crank down. I had a little trouble with the bits moving so the holes aren't perfectly centered, but they're certainly close enough.
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2011-03-19, 04:56 AM
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#5 |
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ERIC P
Join Date: Jan 2007
Location: Denare Beach, Saskatchewan, Canada
Age: 27
Posts: 5,244
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I drilled a set for a second pedal hole and found that if you drill from the back the drill does not wander as much. I drilled in 4 steps to get to 1/2" but feel I could have easily done it in 3.
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2011-03-20, 12:38 AM
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#6 |
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Unicycles on my mind...
Join Date: Sep 2008
Location: North of Boston, MA
Age: 40
Posts: 868
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I was thinking of getting 150s and drilling 130 & 110 triple holes.
Would that be good for a 36er in most circumstances?
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2011-03-20, 04:01 AM
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#7 |
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Muni Crash Test Dummy
Join Date: Mar 2009
Location: US - Santa Barbara, CA
Age: 23
Posts: 2,552
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For those of you drilling for pedal positions: Do you guys change pedal positions during rides? Or just before a ride? Seems like it would be annoying to switch pedals around very much during a ride.
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It's not as steep as it looks, just go! www.DaneMehlPhotography.com www.YouTube.com/DaneUni |
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2011-03-20, 04:41 AM
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#8 | |
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Portland Chiropractor & Unicyclist
Join Date: Oct 2009
Location: Portland, OR, USA
Age: 38
Posts: 796
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Quote:
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Unicycling Chiropractor Portland, Oregon |
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2011-03-20, 06:05 AM
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#9 |
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Unicycles on my mind...
Join Date: Sep 2008
Location: North of Boston, MA
Age: 40
Posts: 868
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just got these... I cut the cage on the inside toward the cranks so it would pass the second "chuck" and when I get my 36er back from where it is, I'll give it a try.
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Retrofit Disc Brakes to your existing unicycle today! |
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2011-03-21, 07:23 PM
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#10 | |
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Treehouse Muni Rider
Join Date: Aug 2004
Location: Los Gatos, CA
Age: 35
Posts: 1,337
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Quote:
http://www.corbinstreehouse.com/blog...moment-cranks/ Tools required: milling machine, end mill, vise. Also: http://www.corbinstreehouse.com/blog...chined-cranks/ -corbin Last edited by corbin; 2011-03-21 at 07:24 PM. |
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2011-03-21, 11:28 PM
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#11 |
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Sam Haber
Join Date: Aug 2006
Location: Boston, MA
Age: 28
Posts: 2,322
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A Milling machine is hands down the way to go.
The idea is to Mill out a channel rather than just drill holes. Or in my case both: I lost somewhere between 35-40% of the weight. Ive been riding nothing but these cranks for over two years now and they haven't bent, cracked or failed in any way, yet. |
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2011-03-22, 02:52 AM
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#12 |
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Unicyclist Chris .
Join Date: Aug 2009
Location: On my laptop doing something unicycle related.
Posts: 552
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Cheers Corbin! Yeah Sam I love yours! what length are your cranks and what diametre holes?
A Drill Press will do the trick right? just take them to metal work...
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-Clean Swabs "The only way to becoming a great unicyclist is to get back up and do it again" - B.S. |
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2011-03-22, 08:25 AM
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#13 |
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vegetarian rider
Join Date: May 2007
Location: on board of my sailyacht, mostly hamburg
Age: 100
Posts: 2,982
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be careful to keep the right angle and best you use a center punch,
the koxx are also mine http://www.unicyclist.com/forums/sho...1&postcount=18
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2011-03-24, 08:42 AM
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#14 |
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Ohh Baby
Join Date: Dec 2003
Location: Utah
Age: 23
Posts: 885
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Saves some weight in an important place. Just did it on the 29er, 19 and 14 are still undrilled...
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2011-03-24, 10:38 AM
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#15 | |
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Sam Wakeling
Join Date: Oct 2003
Location: Ayr, Scotland
Age: 28
Posts: 590
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Quote:
Sam
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