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 Post subject: 24" wheels on an FSR
PostPosted: Tue Jul 10, 2012 4:10 pm 
retrobike rider
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Location: Brighton
just pondering the idea of changing both wheels to 24" on my Specialised Elite FSR (1999)...

i have the means to convert to disc on the rear, so this wouldn't be an issue....

what else may scupper this loosely thought up plan?


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 Post subject:
PostPosted: Tue Jul 10, 2012 4:12 pm 
Retro Guru

Joined: Mon Jan 02, 2012 12:41 am
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Location: Warrington
BB height would be dropped alot. So you're potentially going to have issues when you ride.

Can't see much else that's a problem besides that.


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 Post subject:
PostPosted: Tue Jul 10, 2012 4:17 pm 
retrobike rider
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would 1 inch make that much difference? (my naivety may be showing through here!)


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 Post subject:
PostPosted: Tue Jul 10, 2012 4:35 pm 
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It'll lower the CG, which will reduce stability a bit.
However the biggest issue is pedal clearance. You'll hit the ground quite easily if you pedal through corners.
Unfortunately the lowered CG will mean you need to lean into corners a bit more to counteract the centrifugal force, making the ground clearance problem only worse.

I have a 1" difference in BB height between my modern (32.0cm) and my Sbikes (29.5cm). I do notice it every time.


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 Post subject:
PostPosted: Tue Jul 10, 2012 4:39 pm 
retrobike rider
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do extra large tyres help compensate? i.e. 24x2.35 or larger


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 Post subject:
PostPosted: Tue Jul 10, 2012 5:13 pm 
Retro Guru

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Nah. Itll just make more drag. Unless you run soft tyres.


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 Post subject:
PostPosted: Tue Jul 10, 2012 5:13 pm 
Retro Guru

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Nah. Itll just make more drag. Unless you run soft tyres. Which will make even more drag anyway.


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 Post subject:
PostPosted: Wed Jul 11, 2012 1:51 pm 
Retro Guru

Joined: Sat Aug 20, 2011 5:14 pm
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Location: Newcastle
Longer fork and jacked up rear end would help though?

Why the drop to 24?


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 Post subject:
PostPosted: Wed Jul 11, 2012 3:37 pm 
retrobike rider
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it was a bit of a knee jerk as a chap on here is selling a decent set of 24" wheels and hubs, so was tempted.
also started me thinking about weight - 24" wheels could be lighter..
and then i thought if i'm running discs, there wont be an issue of rim brake/caliper alignment.
i've seen the specialized big hits run a 24" rear wheel with 26" up front, but they have a longer rear travel system to compensate for this i guess.

no plans to actually convert, was just a thought :)


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 Post subject:
PostPosted: Thu Jul 12, 2012 12:14 pm 
Gold Trader / PoTM Winner
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My buddy at the trails in Liverpool did exactly this to his FSR many years ago... was before the time that all these little 24" dirt jump hardtails were coming out, and we both had converted bmx cruisers into little hardtail jump and park bikes. He then went one better and built a full suss around an FSR.

It was, without doubt, the best bike to ride the trails... which included several Brooklyn Park Bikes, a Brooklyn Minilink, and a range of Cannondales and other stuff etc that were "built for the job"

Ground clearance was never an issue, and the handling was spot on!


G


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