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PostPosted: Sat Apr 23, 2011 10:32 am 
Gold Trader
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Location: on the trail
Hi all
im thinking of going for some rigid forks for my next ride and need to know what is the axle to crown measurement of a 100mm travel sus fork

im thinking 455mm ish??

Thanks Rob


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PostPosted: Sat Apr 23, 2011 12:14 pm 
Retro Guru
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Location: mid cheshire
i've got some bomber supercomps that are 47cm. others may vary as these seem to have a fair bit of spare space after they are at full load


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PostPosted: Sat Apr 23, 2011 12:56 pm 
Old School Grand Master
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Location: Fircombe.
About 470mm seems to be the going rate.
Less 25% sag gives you 445mm which is the "corrected" rigid measurement.


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PostPosted: Sat Apr 23, 2011 1:39 pm 
Gold Trader
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ooo so close!!!!

10mm out :shock:

thanks chaps


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PostPosted: Sun Apr 24, 2011 5:59 pm 
Gold Trader / rb Rider / Special
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yeah thats about right, can vary by brand though
my 04 dj3's come up at 510mm i think
marzocchis are generally bigger
my dads old forks (rst something) were 445mm i think
and thats the size rigids we replaced them with :?


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PostPosted: Tue May 03, 2011 9:49 pm 
Gold Trader
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Location: Manchester, UK
~460mm on my SIDs


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PostPosted: Tue May 03, 2011 10:18 pm 
Moderator /Lincs, E & S Yorks Deputy AEC
Moderator /Lincs, E & S Yorks Deputy AEC
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Joined: Mon Nov 26, 2007 6:16 pm
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Location: RetroModding™ since 1988
All brands vary, so you should be able to find something close to your requirements.


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PostPosted: Thu May 12, 2011 11:19 am 
Retro Guru
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Quite a few measurements of lots of different forks in here... :

http://forums.mtbr.com/showthread.php?t=355830


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PostPosted: Thu May 12, 2011 9:35 pm 
Dirt Disciple

Joined: Thu May 12, 2011 8:20 pm
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Location: essex
440mm is the manufacturers generally accepted 'correct' length for a 100mm suspension corrected rigid fork, but it will generally be a bit shorter than most forks- especially marzocchis. the bike will feel a lot 'quicker' with them on.


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PostPosted: Fri May 13, 2011 10:39 pm 
Old School Grand Master
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Location: Fircombe.
dez wrote:
440mm is the manufacturers generally accepted 'correct' length for a 100mm suspension corrected rigid fork, but it will generally be a bit shorter than most forks- especially marzocchis. the bike will feel a lot 'quicker' with them on.

Perhaps because of the slop in sus forks?


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