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 Post subject: Different sized wheels
PostPosted: Tue Mar 29, 2011 2:15 am 
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Are there many (any?) negatives from running a 24" rear wheel and 26" front?

Or any positives?

Got a mini v-brake (that's alleged to work with non V levers) to go on the missus' bike but it's unusable with a 26" rear wheel so thought a 24" could be the answer...


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 Post subject:
PostPosted: Tue Mar 29, 2011 10:01 am 
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I don't know the actual answer, but can only guess that as with a car - if you run a smaller rolling radius you'll benefit from better acceleration, but lower top-end...

But on a bike, the difference probably aren't noticeable or very minorly negligable???

There was a cannondale in the early 90's with this set up and I don't remember hearing any thing bad about it...


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 Post subject:
PostPosted: Tue Mar 29, 2011 10:21 am 
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Assuming you're running similar sized tyres (e.g. both 1.95 or whatever), then I'd say that it'd slacken the head angle and reduce pedal ground clearance a bit.

If you run a bit fat DH/Jump tyre then there'll be little difference other than a load of chainstay rub.


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PostPosted: Tue Mar 29, 2011 10:24 am 
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cannondale ran a 24" rear wheel so they could make the chainstays shorter and improve the climbing ability of the bike.


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PostPosted: Tue Mar 29, 2011 10:42 am 
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Dave_H wrote:
If you run a bit fat DH/Jump tyre then there'll be little difference other than a load of chainstay rub.


Why's that?

I thought chainstays widened a tad further away from the pedals...
It's just a curiosity question, I dare say the rear will be a fairly normal size tyre..

I very much doubt this will do anything more than very easy tow path or singletrack.. or pootle round town kinda thing.. just don't want it to make riding a hard slog for her since she'll never ride it if it is :?


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PostPosted: Tue Mar 29, 2011 10:55 am 
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IDB1 wrote:
Dave_H wrote:
If you run a bit fat DH/Jump tyre then there'll be little difference other than a load of chainstay rub.


Why's that?

I thought chainstays widened a tad further away from the pedals...
It's just a curiosity question, I dare say the rear will be a fairly normal size tyre..


Because a lot of 24" DH/Jump tyres are big fat 2.7 or 3.0 with a tall sidewall to create a bigger volume tyre whilst retaining a similar height to a 26" tyre. Normal XC type frames won't have the clearance to fit it.

If it's just an XC type tyre but in a 24" then you're right, there will be more mud clearance.


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 Post subject:
PostPosted: Tue Mar 29, 2011 10:58 am 
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8) ta.....


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 Post subject:
PostPosted: Tue Mar 29, 2011 6:16 pm 
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#I did it on minikens bike in my signature, works fine but I put a fat tyre on the back to help compensate - i used a 24inch frame though with 26inch forks - even for a mini V will you not need the bosses in the right place?


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 Post subject: .
PostPosted: Tue Mar 29, 2011 6:43 pm 
aka Leo Swayer
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It will reduce the BB height a bit.
Bit like my 69er which is now 26" rear and a 650b front(should have been a 29", long story) handling has improved, climbs better and looks the spuds :D


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PostPosted: Tue Mar 29, 2011 7:03 pm 
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The Ken wrote:
even for a mini V will you not need the bosses in the right place?


I'd need to offer the brakes up again to be sure but I think the pads were right at the top so would have about an inch they could come down.. so maybe not.. but, knowing my luck, probably :lol:

One of the kids has a 24" wheeled bike (only realised today when I noticed it lurking in the corner) so may see if it'll work with that and go from there..


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