John L. Lucci said:I've set up my mountain bike ('88-'89 Alpine Monitor pass all Shimano Deore
Drive train) for commuting work.
What changes did you make?
Quoted message said:For short distances (5 to 6 miles) it
works great; however, for longer distances I'm finding that the gearing is
a little too low as I'm only averaging 10.6 per hour. If I set my gearing
on my largest chainwheel (I think it's a 43)
Count them. It's more likely to be 46 or 48, but might be 44 or 42.
Quoted message said:and the rear on the fourth
(rear is 6 speed factory default ratios) riding the bike over distance is
fairly comfortable; however, my speed averages around 12 miles an hour
which is pretty slow.
For a rider without a lot of daily time in the saddle, that's a
typical figure.
Quoted message said:This raises the question is it possible to put a
road triple on the front and narrow down the rear cog set to increase
overall speed?
Possible to do, yes. Would it do what you state? In my opinion, no,
in this instance.
Quoted message said:Would this be feasible or am I better off trading off for a
hybrid bike like a new Specialized Sirrus or one of the new Breezer's?
Although switching to a more street-oriented bike might allow a higher
speed, there are other options available.
First, be aware that the exact sizes of the gears are pretty much
irrelevant; the ratios are the important bit, and since you're not
getting into the top combinations now, the fact that the majority of
the gears are too low is not going to make a difference. I think your
problems lie elsewhere. I would suggest starting by swapping out the
tires to 26 x 1.5" slicks; this will probably allow you to shift up to
the tallest gear combinations and achieve a higher running speed right
away. If, after riding for several weeks, you find that you're now
spinning up in top gear and have developed the real need for a higher
top gear, it would be time to look at swapping out the freewheel for a
unit with a smaller high gear sprocket, or swapping out the large
sprocket in the front for something with more teeth. Right now, I
think the real limiting factors are your tires and your own level of
conditioning. I would advise leaving the gears alone for now.
--
Typoes are a feature, not a bug.
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