James,
Quoted message said:
The main reason I don't want a tourer is because I had one before - a
Dawes Mirage - and it was nothing but a dissapointment. Replaced the
brakes, gears and wheels a fair few times, but nothing would make it
right. OK, maybe the problem was terrible mechanics which never kept
the chain on the spogs, later indexed gears which never worked
properly, and maybe the whole thing was the wrong size for me anyway
(I got it second hand).
Dawes do make great touring bikes and I had seen quite of few people
touring with them, mainly on the Galaxy model.
Brakes, gears and wheels are consumable items and are subject to wear
and tear. You don't expect them to last forever do you? Unless
ofcourse, you don't ride your bike.
I usually go through a pair of Mavic T520 or A719 wheelset a year.
These are professionally built and are bloody expensive, but I ride in
all weather conditions.
I go through a cogset every 6 months, but I'm now using the 3 chain
system where I am hoping to prolong cog wear to a year. Cogs are the
LX/XT kind which is not cheap either.
I am now on my 3rd rear derailleur, because I had worn down the pivots
on the other 2.
If you are buying a second hand bike, especially a touring kind, be
extremely weary of the things I said above. Otherwise, you'll going to
inherit problems the previous owner do not want to address.
Quoted message said:
But I love a good, hard blast periodically, and like a dabble every
now and then when I see another biker up for it. Even on the mountain
bike, it makes for a good race for short distances, but the racers
always leave me behind and those fun competitions and the personal
lift from seeing an impressive speedo/times does mean a lot to me, sad
though I may be to have to admit it.
There are 4 main conditions that can slow you down.
Typically, the rider's body accounts for up 65% of the aero drag that
makes you feel slower, while the bike's aerodynamics accounts for 20%,
10% for wheels and 5% for rolling resistance all within your comfort
level ofcourse!
Weight is not a significant condition to any strong rider,unless you
are a 150 watts rider.
The more aerodynamic you are on the bike, the easier you will feel to
go fast. If you go out today and buy a road race bike, but adopt a
mountain riding style (upright riding) as so many road newbies do
(buying high rise stems or use the Zoom stem extender to get the handle
bar higher, you are going to be highly dissappointed. You will
probably go slightly faster than on your mountain bike, but you won't
pass these racers with impressive speedo times.
To beat them at their own game, a combination of group training and the
ability to go low on the bars, tucked in aerodynamically and be
punching in the bigger gears (52/14 or 12) are necessary. Being
upright isn't going to be any help to you going fast.
Incidentally, the lower you are on the bars, the more leverage you will
get pushing the bigger gears by using your arms on the drops or hoods
acting as a fulcrum. You will feel as though you're going to be
ejected out of your saddle and only your arms are holding you in.
That's what experienced cyclists are doing.
All is not lost though as you can actually convert your mountain bike
to go faster by riding low to your bars and stretched out -- longer
seatpost setback plus a longer stem and then running a pair of narrow
higher pressure tires. Tuck in low, real low and you might give the
poser racers a run for their money!!
Quoted message said:This is why a bordering-on-racing bike is the sort of bike I'm
interested in, rather than something that will kill you after 80 miles
and/or will be considered a throwaway if you ride it over a sixpence.James.
If you are planning to buy a fast bike with low handle bar and you're
coming from a mountain bike background, I would strongly suggest that
you go to a bike fitter that can fit you properly. Pay extra and get a
lesser bike if you have to. A well fitted bike will make you go faster
than an ill-fitted one.
David.