20" or 24"

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SecretSam
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20" or 24"

Postby SecretSam » Fri Nov 30, 2012 07:31 am

So, given that the kids (twins) are now 7.5 years and 120cm, we took them to LBS to check out bikes. 20" was comfortable, but they also tried a 24" at the suggestion of the assistant, and whilst big, you can see them growing into them...and it saves buying 4 bikes (2x20" then 2X24") - but am not sure, LBS has tried the old "yeah, that fits" with my missus before and nearly convinced her to get a bike that's far too big...thoughts?
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owenlars
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Re: 20" or 24"

Postby owenlars » Fri Nov 30, 2012 08:44 am

Get a second opinion?

oxoman
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Re: 20" or 24"

Postby oxoman » Fri Nov 30, 2012 23:46 pm

I chose the 20" route for my 7yr old as i thought the 24" i tried him on was just to big and heavy for him to enjoy riding. Best bet try a few different bikes and see whats best.
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othello
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Re: 20" or 24"

Postby othello » Sun Dec 02, 2012 00:28 am

My 6 year old daughter rides 24" wheel bikes (road bike and mountain bike) but then she is very tall for her age. She also has good bike control from attending a cycling club every week. For her it wasn't the height of the bike which made the difference, as the saddle height is almost the same as her 20" wheel with the saddle right up. But the length of the bike. That has taken her a little getting used to.

Really depends on the height and skill level of the rider.
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baudman
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Re: 20" or 24"

Postby baudman » Sun Dec 02, 2012 09:59 am

othello wrote:Really depends on the height and skill level of the rider.


+1

But, it's also more than just wheel size. Some 20" ride 'tall' and some 24" ride 'low' - it just depends upon the geo.
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johnboy183
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Re: 20" or 24"

Postby johnboy183 » Tue Dec 25, 2012 12:30 pm

Can always try the ubiquitous Islabike route. My 6 yr old is almost too big for his Beinn 20 small, he has about 1 cm of seat post adjustment left. So we bought him the Beinn 24 which is ever so slightly too big. However he has no problems stopping and starting, mounting n dismounting. Hopefully last him 2 years. He is approx 122 cm tall if this helps

Steve7577
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Re: 20" or 24"

Postby Steve7577 » Mon Feb 11, 2013 20:34 pm

I got my 6 year old ( 120 cm tall) a 20 inch Trek for Xmas and I think with the seat at its lowest it is only just right for him, with plent room for him to grow with it. The pedal position can be adjusted for when he is bigger as well.

oxoman
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Re: 20" or 24"

Postby oxoman » Mon Feb 11, 2013 20:50 pm

Have just been down this route myself, My youngest also 7 know has a small frame 24" road bike and a 20" MTB whilst he is still getting used to the roadbike mainly due to gear selection and poistion he can manage it well enough. I decided that given that they shoot up size wise around this age i would get the slightly bigger bike for the road. But as others have said before try them on the bike for reach etc.
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Shaun67
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Re: 20" or 24"

Postby Shaun67 » Tue Feb 12, 2013 10:27 am

We had the same problem at the time our children changed bikes, they were 5 & 7, it was the bac kend of last summer. I purchased a 20" & 24" and just cut around an inch from the seat post so it could be dropped right down to the frame, I'm pleased I got the larger bikes as after only 2 months I need to higher the seat quite a bit.

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Re: 20" or 24"

Postby Mike Healey » Wed Feb 13, 2013 23:14 pm

It's not always about the saddle height/getting their feet on the floor stuff.

A frequently overlooked factor is how far forward they have to reach to hold the bars. This can cause back problems and if their arms are at full stretch it makes control more difficult than it should be, not to mention the fact that, off road, they won't have sufficient flex to be able to absorb bumps and dips.

Shaun67
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Re: 20" or 24"

Postby Shaun67 » Thu Feb 14, 2013 09:55 am

Ture...that's a good point that also needs taking into consideration, but I have found the childrens
bikes tend to have quite short top tubes.

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Re: 20" or 24"

Postby Mike Healey » Fri Feb 15, 2013 02:26 am

Shaun67 wrote:Ture...that's a good point that also needs taking into consideration, but I have found the childrens
bikes tend to have quite short top tubes.


That's true, but the larger bike will still have a top tube which may be a stretch for an indivual child. There's also the possibility that the bars may be too high, so alot depends on how close the kid is to graduating to the next size up and what their body/leg length proportions are. T a large extent it is a case of suck it and see and there's nothing beats seeing you child actually riding the bikes concerned.


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