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PostPosted: Wed Aug 22, 2012 8:06 am 
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Formerly known as wassertreter

Joined: Tue Apr 12, 2011 8:08 am
Posts: 1855
Location: Pedal Square
I have a very roadbike akin cyclocross bike. Would it be unrideable if I put a 80-100mm suspension fork on it, to use it for a few leisure MTB rides in summer? Mostly gravel roads of different quality, and easy trails, no hardcore stuff.

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PostPosted: Wed Aug 22, 2012 9:12 am 
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Joined: Wed May 13, 2009 5:23 pm
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Location: Denmark
I've been riding what I'd classify as easy trails with my cross bike (standard setup, rigid fork) without any problems. If it's mostly fire roads I think you should be fine.

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Posted: Wed Aug 22, 2012 9:12 am 


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PostPosted: Wed Aug 22, 2012 9:27 am 
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Joined: Mon Jul 11, 2011 8:20 am
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Location: Glasgow, Scotland
The frames geometry will remain the same if the axle to crown height of a suspension fork is the same as the rigid that you have already. This is very unlikely though. Looking at a few, if you are going from a road fork you could be adding as much as 120mm to the fork length, from a cross for more like 90mm. I think this would have a very noticeable effect on the handling of the bike, if you could borrow a fork from someone to try it might be worth it.

But as the poster above mentioned, it's possible to ride a standard cross set up off road with no problems whatsoever!


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PostPosted: Wed Aug 22, 2012 9:29 am 
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Formerly known as wassertreter

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Location: Pedal Square
Yes, I've been doing lots of MTB with a rigid fork in the 90s, and with a suspension in the early 2000s. I know if I have an MTB(-ish bike) I'll be using it more, also on trails, but probably not enough to justify a whole bike. Riding the winter beater with a flat bar and suspension fork sounds like a budget solution, unless people think it won't work out.

Hmm maybe I could run a 27.5" front wheel to compensate for the added rise, although that might look a bit weird.

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