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 Post subject: Lefty Steerer Tubes
PostPosted: Tue Aug 26, 2014 2:01 am 
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Joined: Mon Dec 28, 2009 8:30 pm
Posts: 3812
Location: Bay Area
I currently have an OPI fork on my 2012 Flash and the stem angle is not aggressive enough. I would like to find an aftermarket headtube to run a normal stem with and I am aware of the MCFK offering, but wanted to know of any other companies that make a similar product that people on here have actually used?

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 Post subject: Lefty Steerer Tubes
Posted: Tue Aug 26, 2014 2:01 am 


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 Post subject: Re: Lefty Steerer Tubes
PostPosted: Tue Aug 26, 2014 6:14 am 
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Joined: Sat Oct 10, 2009 7:13 am
Posts: 884
Location: 93306
Why not get a Leonardi stem?
The other offerings are usually heavier. I can't remember who posted the weights previously, but the MCFK setup wasn't significantly lighter.
viewtopic.php?f=1&t=111757&p=983087&hilit=Opi+steerer#p983087


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 Post subject: Re: Lefty Steerer Tubes
PostPosted: Tue Aug 26, 2014 9:04 am 
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Joined: Fri May 02, 2008 5:39 pm
Posts: 540
Location: Here, there and everywhere
Leonardi steerer? Project 321 steerer?

To be honest, in a similar situation I'd just go for the funky Leonardi OPI stem :D


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 Post subject: Re: Lefty Steerer Tubes
PostPosted: Tue Aug 26, 2014 1:00 pm 
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Joined: Thu Feb 03, 2011 2:28 pm
Posts: 380
I had a Project 321. It was so flexy the headset couldn't stay tight.

I replaced it with one from Black Cat Bone. No more headset issues.


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 Post subject: Re: Lefty Steerer Tubes
PostPosted: Tue Aug 26, 2014 1:16 pm 
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Joined: Wed Nov 01, 2006 4:55 am
Posts: 603
Location: Vancouver, British Columbia, Canada
Experimental Prototype has one too I think.


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 Post subject: Re: Lefty Steerer Tubes
PostPosted: Tue Aug 26, 2014 4:20 pm 
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Joined: Wed May 13, 2009 5:23 pm
Posts: 627
Location: Denmark
I'd also go with the Leonardi option. Anton Cooper uses one, and so did Manuel Fumic in Méribel.

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 Post subject: Re: Lefty Steerer Tubes
PostPosted: Tue Aug 26, 2014 5:00 pm 
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Joined: Mon Dec 28, 2009 8:30 pm
Posts: 3812
Location: Bay Area
Thanks for the replies. I am not super interested in the Leonardi one as the purpose of this mod for me is not to save weight, but to be able to use a normal stem so I can fine tune the angle. I want to run a -17 or more stem.

Can someone provide a link to the Black Cat Bone tube, I can't seem to locate their actual site?

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 Post subject: Re: Lefty Steerer Tubes
PostPosted: Wed Aug 27, 2014 9:14 am 
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Joined: Thu Feb 03, 2011 2:28 pm
Posts: 380
My mistake. The Project 321 was aluminium and weighed a ton. I replaced it with an Experimental Prototype. After waiting months for it, and spending an inordinate amount of time chasing Mattias to actually get it, it was flexy as hell. The Black Cat Bone guys were fast, with great communication, and delivered a lighter and much stiffer steerer tube.


Last edited by Privateer on Wed Aug 27, 2014 9:16 am, edited 1 time in total.

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 Post subject: Re: Lefty Steerer Tubes
PostPosted: Wed Aug 27, 2014 9:15 am 
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Joined: Thu Feb 03, 2011 2:28 pm
Posts: 380
I'll see if I can dig out an email contract for Black Cat Bone. I'm not sure they have a website. I found them through a blog.

EDIT: Sorry, can't find an email address (changed countries and jobs, and had contacted them through a work email address), but you could get in touch through Facebook:
https://www.facebook.com/blackcatbonebikes


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 Post subject: Re: Lefty Steerer Tubes
PostPosted: Fri Aug 29, 2014 10:18 pm 
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Joined: Fri Sep 06, 2013 1:21 am
Posts: 62
Location: Canada
Jaker wrote:
Experimental Prototype has one too I think.


Been riding the last few years with a carbon steerer from Matthias (Experimental Prototype) and i never experienced any flex.


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 Post subject: Re: Lefty Steerer Tubes
PostPosted: Sun Aug 31, 2014 6:18 am 
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Joined: Fri Sep 23, 2005 6:34 pm
Posts: 543
Location: Insjön, SWEDEN
Privateer: sorry I left you with a bad experience, sometimes things just do wrong when keeping many balls in the air.
Flexy Lefty tubes from me? Have you read the weight limits and riding style limits?, I use my own stuff in a long time and have all my body parts intact, (head not included).
Flexion can happen if glue has a failed bond between the aluminum rings and the carbon tube.

Regarding Black Cat Bone, the people who run this company are my friends, I are not sure if they sell their own products anymore. I can ask one of them if you want.

/Mattias one in all in the company E|P.

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 Post subject: Re: Lefty Steerer Tubes
PostPosted: Mon Sep 01, 2014 12:04 am 
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Joined: Mon Dec 28, 2009 8:30 pm
Posts: 3812
Location: Bay Area
Mattias- I would greatly appreciate it if you could ask them if they would produce one for me! I really want to run a normal -20 stem.

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 Post subject: Re: Lefty Steerer Tubes
PostPosted: Mon Sep 22, 2014 10:29 pm 
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Joined: Fri Aug 08, 2014 6:00 pm
Posts: 15
I have a Leonardi and love it. Plus it looks amazing.


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 Post subject: Re: Lefty Steerer Tubes
Posted: Mon Sep 22, 2014 10:29 pm 


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