| Title: | Bicycling |
| Notice: | Bicycling for Fun |
| Moderator: | JAMIN::WASSER |
| Created: | Mon Apr 14 1986 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 3214 |
| Total number of notes: | 31946 |
As some of you are aware I am in the process of building up a new
bike(Vitus w/ Dura-Ace) and ran into a big question "should I go with
the new 8 speed or the 7 speed cassette system?" I ran into a lot of
differing opinions but I just thought I would share them with you.
First off I don't really need 16 gears but I thought that since I
was buying Dura-Ace might as well get the newest(the cost through
Colorado Cyclist is only $5 more since levers are the same price).
I also thought that maybe if I got the 8 speed that if they upgraded to
hyperglide next year maybe it would be backward compatable to the 8
speed. I talked to 5 different bike shop mechanics, the experts at
nashbar and colorado cyclist and I called Frank Berto at home.
pros
----
* you get an extra cog and the newest seal upgrade on the hubs.
* you "might" get backward compatablilty when they come out with
hyperglide.
* its the newest stuff. Your friends will ask you about it.
* it is not difficult to spread the rear drop outs and the faces on the
nuts are rounded for ease of slipping it on the drop outs.
cons
----
* you have to spread (read "stress") the frame and about half said
"no problem" the other half said "I wouldn't do it if it was my
frame, especially aluminum". The frame spread required is 4mm.
* When/if Shimano goes to hyperglide it (based on its history)won't be
backward compatable. hyperglide needs a key slot on the cassette.
The basic suggestion was "wait about 1-2 years for frames that are
130mm and hyperglide (and by the way there will be something else new
at the time)
I bought the 7 speed.
any inputs or comments?
Mike
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 1276.1 | 7 speed freewheels are interchangeable | IAMOK::WESTER | Tue Aug 08 1989 17:35 | 12 | |
Another "pro" for 7-speed is that you can use your old wheelsets.
8-speed cassette means all your rear hubs have to be of the cassette
variety. Of course, if you don't have any old wheels lying around then
it's not really an issue.
8-speed cassette sure sounds nice though. It would be great to
customize your freewheel wihtout much trouble.
As far as hyperglide, I only use Sedisport's now, and I think they're
better than the Shimano chains.
Dave
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| 1276.2 | How about an 8 speed bike | ULTRA::WITTENBERG | Uphill, Into the Wind | Tue Aug 08 1989 19:17 | 6 |
How many gears do you actually use? The old 10-speeds actually had
only 8 useable gears, so you might want to copy the U.S. Olympic
team (1984 version) and use only one chainwheel. Saves the weight
and wind resistance of the second chainwheel and front derailleur.
--David
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| 1276.3 | Approaching warp speed with Hyperglide | WMOIS::N_FLYE | Tue Aug 08 1989 22:06 | 20 | |
Thought I would clarify a couple of things. For people who ride
only road bikes, yes there is a hyperglide chain, but it works in
conjunction with Shimano's hyperglide system. This system is presently
found on Shimano's line of mountain bike components. The rear cogs
of the hyperglide system have ramps on the side of them and the
teeth are twisted to perform their intended task. This task is
to shift the chain under full power. No need to let up the pressure
when shifting. I have it on the mountain bike and it works flawlessly.
I can stand up and sprint up any enbankment downshifting the whole
while as I loose momentum. It actually seems to work better under
pressure. I have a friend who is a 225 lb. gear masher and he never
misses a shift.
I'm not sure that hyperglide on a road will get alot of use but
it will be a good selling point. Under hard hill climbing it would
help but the time it would save would be very small. On the MTB
if you can't downshift on the hill your through. Rocks, ruts and
the steepnes of the grade usually prevent a restart. I wouldn't
buy it for my road bike just because it was the lastest.
Norm
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