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20cents  
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 More options Jun 29, 4:35 pm
Newsgroups: aus.bicycle
From: 20cents <nore...@bigpond.com>
Date: Mon, 29 Jun 2009 06:35:14 GMT
Local: Mon, Jun 29 2009 4:35 pm
Subject: Re: Back problems
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In article <4a480b8...@dnews.tpgi.com.au>,
 Caulfield Man <Bicyc...@twowheeler.com> wrote:

> Folks

> I have a 15 year old Giant Yukon MTB and a Trek Road flat bar racer. I
> like the stance of a MTB and I am principally a commuter so when the MTB
> seemed too old (and there was coin in my pocket) the flat bar racer
> seemed a sensible move. Trek bike is 2 years old. They have a similar
> frame size and are both in excellent condition. (I think...)

> Question is this.

> I can ride the MTB endlessly and feel fine when I get off it. These days
>   when I ride the Trek I end up with almost crippling back pain.

> Do I consult my friendly bike shop guy? See a medico? I'm not sure
> whether the skinny wheels and structure of the flat bar racer mean more
> road vibration ends up in my back whereas,  the MTB has reasonably fat
> tyres which seem to soak more of the vibrations up. (The MTB has no
> suspension)

> Any thoughts?

> Cheers

Are the handlebars at the same height relative to the saddle on both
bikes? You might have a more upright posture on the MTB (handlebars
higher than saddle) and are not used to bending over further on the Trek.

In addition, I would also compare the distance from the saddle to the
handlebar grips to see whether that is causing you to reach further.

I assume 'crippling back pain' is muscular and goes away after a short
time off the bike and not sciatic/ pinched nerve pain that drops you to
the floor (speaking from experience).

regards,
20cents


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