T.R | Title | User | Personal Name | Date | Lines |
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2605.1 | | JURA::PELAZ::MACFADYEN | I talk because I have to | Thu Jul 08 1993 06:07 | 16 |
| You're on track with the components except for the freewheel. I would
STRONGLY recommend that you buy a Shimano 7-speed Hyperglide freewheel,
assuming you can find such a beast. For indexing, it's never a good idea
to mix components from different manufacturers.
But you may run into difficulties with frame and wheels. It may be tricky
to find that Shimano freewheel, because Shimano is heavily inclined to
cassette systems. That may mean a new rear hub, which effectively means new
wheels.
As for STI, it's 8-speed and requires 130mm rear spacing on your frame,
which it certainly doesn't have. It'll be 126mm, for which 7-speed is the
official maximum. You'll likely need to have a new bike to get STI.
Rod
|
2605.2 | A LITTLE MORE... | WMOIS::GIROUARD_C | | Thu Jul 08 1993 07:23 | 14 |
| Rod is absolutely right about the freewheel. You really should go with
Shimano. Even though you may not immediately go to STI (BTW - you can
still run a 7spd freewheel with their 105 STI and it will work fine)
the freewheel works with friction.
You don't need to do anything with your front changer. Save a few $$'s
if it's working.
You may be able to spread your triangle to accept an 8spd, but now
you're talking hubs/wheels as Rod pointed out.
Good luck...
Chip
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2605.3 | hub respace/centering required | MIMS::HOOD_R | | Thu Jul 08 1993 10:15 | 25 |
|
On my Cannondale , I currently run Suntour bar-ends with a Shimano
Deore-LX derailleur and a Sachs-Maillard 7 speed freewheel with NO
problems. It shifts perfectly every time. I've used the Sachs-Maillard
freewheel with both Shimano and Suntour derailleurs with no problem.
When moving from a 6speed freewheel to a 7 speed freewheel, you will
need to respace the hub (adjust spacers on either side to accomodate
a wider freewheel and center the hub on the axle) and possibly
re-dish the wheel if the rim is moved off center. I have done this with
a 1987 Cannondale and a 1987 Specialized Stumpjumper. The Stumpjumper's
dropouts were not really wide enough to accomodate a 7 speed freewheel,
so I also had to spread the rear triangle a few mm.
You WON'T be able to simply bolt on a new freewheel without adjusting
the hub spacing/centering.
So... while your ordering your drive train upgrade, you may wish to
order a set of hub wrenches and a freewheel-nut (for removing
Sachs freewheels), and maybe even some bearings (might as well overhaul
them while you are shifting and respacing the hub/axle) and
grease.
doug
|
2605.4 | | MASALA::GGOODMAN | Rippled with a flat underside | Thu Jul 08 1993 10:28 | 9 |
|
I ride 105 rear mech with a Maillard freewheel. There aren't too many
problems, but the shift is quite as slick as it could be. I put that
down to not having a Shimano freewheel. Yes, you can mix and match, but
it is a risk that may not always pay off. It's really up to you. Do you
want to play safe, or do you want to mix for some reason or another
(better performance, cost, etc.) and risk an expensive mistake?
Graham.
|
2605.5 | more on upgrading | ZEKE::SZCZ | | Thu Jul 08 1993 10:45 | 26 |
| Thanks for the advice.
Re -.1, I have bearings and cone wrenches as I presently maintain
my hubs and stuff and intend to get the correct freewheel
removal tool as well.
As far as re-centering in the axle, how does one do that ?
What do you line up with what to insure its correct ? I've
always kept the cone on one side of the axle untouched
to maintain centering when overhauling the bearings, not
sure how to center a wheel like this.
Re -.2 The rear spacing is 126mm. My understanding is to go to
the new rear deraileur, I need to replace the shift levers.
If I try to keep the front derailleur, which does work fine,
will it work with the new levers ? Can you turn off the
indexing to allow it to work with just friction ?
BTW, I rechecked the existing components, its SACHS Hueret, not
Fleuret. Anyone got an old one hanging around they'd be willing to
part with/sell ? My original plan was to keep this bike running
'til I saved enough bucks for a new bike, but its just not working out
that way....
...Tom
|
2605.6 | TRY IT FIRST... | WMOIS::GIROUARD_C | | Thu Jul 08 1993 11:33 | 5 |
| I would try the 6-7 speed first. I'll bet it'll work without extensive
(any) wheel work. Generally, there is enough adjustment room to
compensate for this. I went from a 7-8spd. with no problem.
Chip
|
2605.7 | STI | BOOKIE::J_CROCKER | | Thu Jul 08 1993 12:54 | 20 |
| I have been using STI (Dura-Ace) for 2 seasons now, currently with
Mavic hubs and a Regina 8-spd cluster and Regina chain. My first
months with an STI were 7-spd (7-spd Dura-Ace cluster), with no
problems. I've never used STI with a cassette hub, so I can't really
assess the advantages of cassette. However, based on my experience with
non-cassette and STI (10,000 miles), I think the "won't work without
Hyperglide" argument is pretty overblown.
Since your frame is steel, you can spread it, but if you do it yourself
you will probably trash the alignment, so your bike gets a bit
squirrelly. It pays to have a pro realign.
8-spd would definitely require a new rear hub. A longer conventional
axle won't hold up under the stress of the added distance between
dropouts, so you can't just replace your existing axle.
Some of the mail order houses still carry Dura-Ace clusters, so it's
quite feasible to go STI 7-spd.
Justin
|
2605.8 | What I had to do... | MIMS::HOOD_R | | Thu Jul 08 1993 12:56 | 20 |
| This time, you'll actually have to loosen up the nuts on both
sides of the hub.
Like -1 said, put on the new freewheel and fit the wheel into place and
see what needs doing. If there is enough freewheel to frame clearance,
your through. In both of my cases, there wasn't.
I had to use smaller spacers on the left hand side of the hub to
shift the whole hub/freewheel assembly to the left enough to
accomodate the new freewheel. If I had not done this, the freewheel
would nearly touch the chainstay/dropout and I could not shift
into the smallest freewheel cog. Because of the increased extension
of the freewheel on the right side, you will need to add a spacer
on that side. This leave little or no room on the axle unless you have
already taken out some space on the left hand side, and shifted
everything left.
Go to a bike shop and get an assortment of 1mm, 2mm, 3mm spacers and
you should be able to achieve a perfect fit. When all is done, check to
see if the rim is still centered. If not, get the wheel re-dished.
|
2605.9 | Do you really want to do all this work | VMSNET::WSA122::LYNCH_T | Is it time to ride yet? | Thu Jul 08 1993 14:01 | 15 |
| Just one question.
Do you really want to go to all this trouble just to get by until you have enough
money saved to buy a new bike?
Why don't you just buy a new rear derailleur and maybe shift levers and stick with
friction shifting for a little while longer. Yes I think index shifting is great and
wouldn't be without it but I wouldn't speed lots to make an old bike indexable.
BTW:Sportstown (a national chain) has the old Shimano rear derailleur that don't
even required the drop out hanger for something like $15.00. That would get you by
for now and you can save your money for the bike that will work out better.
Just a passing thought,
Tom
|
2605.10 | not that much more... | MIMS::HOOD_R | | Thu Jul 08 1993 15:15 | 17 |
| >Do you really want to go to all this trouble just to get by until you
>have enouh money saved to buy a new bike?
>
>Why don't you just buy a new rear derailleur and maybe shift levers and
>stick with friction shifting for a little while longer. Yes I think index
>shifting is great...
An upgrade to 7speed indexed shifting would be less than $90 and less
than 1 hour of work. It cost only $50 and a half hour more to
than replacing the derailleur alone. Since the basenoter is familiar with
rebuilding hubs, this would be a snap. If he's been running this
freewheel for as long as he's been running this derailleur, it may need
replacing anyway. It's a small investment for some really good
shifting.
doug
|
2605.11 | when to the bike shop at lunch... | ZEKE::SZCZ | | Thu Jul 08 1993 15:34 | 19 |
| Once again, thanks for all the advice and experiences.
I ran out lunchtime to a local bike shop and looked into just
replacing with a friction derailleur (Shimano RX400) for $30.00. Would
still need a new freewheel as max teeth is 28 and current freewheel is
30 (and yes its the original, 6,000+ miles on it...due for a change, eh).
I still intend to go to 7 spd, just need to decide on index or not.
The bike shop said even though the derailleur is rated at 28T max, they
recommend only 26T as a 28T could stress out the derailleur and cause
the chain or the derailleur to break. Any insight here as I haven't
been known to exactly blaze up hills and the more teeth the better ?
As for saving for a new bike, I'm maybe half way to what I need and do
not want to impact my nest egg. See there's this Cannondale.....
...Tom
|
2605.12 | | JURA::PELAZ::MACFADYEN | | Fri Jul 09 1993 05:17 | 10 |
| If you can get a 28T 7-speed freewheel, go for it. I used a 28T freewheel
with a Shimano 105SC rear derailleur for ages with no problems. And if you
do get index-compatible freewheel and rear derailleur, you might as well
go the whole hog and get indexed shift levers too.
As for the front derailleur, it's not indexed anyway so your old one will
be fine if you are satisfied with its performance.
Rod
|
2605.13 | installed the upgrade this weekend... | ZEKE::SZCZ | | Mon Jul 12 1993 09:40 | 47 |
| Here's where I'm at....
I ordered the Shimano 105SC Rear derailleur, shift levers, 13x28 Aris
FW and a Shimano chain from NAshbar Friday. They arrived Saturday
morning just as the wife and were trying to figure out what chores were
on the plate that date. The bike won. Anyway, down to the basement I
wnet, off came the old, on went the new. No problems with the shift
levers or derailleur. FW swap went fine too except I did not like the
old spoke protector, ran out and got a much smaller one that looks
better. Put the wheel on and proceeded to set up the indexing. It was
clear there was insufficient room to get to the smallest cog.
So, I moved the axle. Luckily, there were enough spacers to
correctly position the wheel to allow a shift to the smallest cog.
However, the wheel needed dishing. Since this is one area I leave to
the shop, it was back to the bike shop. Dropped it off at 2:30 PM
picked it up the next morning, put it back on the bike, finished tuning
in the indexing and it all worked great, shifting smoothly and quietly
on the workstand.
Later that afternoon, went out for the initial ride, what a
grinding sound ! Seems the chainrings are so worn that whenever I
apply any force as when climbing even the slightest hill, the chain is
slipping and grinding in the chainrings. So today, its time to get new
chainrings. Despite this problem, on the flats, it was the smoothest
and quietest ride and shifting the bike has ever done. I am pleased.
The only rough shift is coming down from the two largest cogs, the chain
hangs up in between for a revolution, the pops onto the correct cog.
Any suggestions or adjustments that could cure this ?
Another question, I did buy the Shimano chain which came with two
special pins for assembling the chain. Is this the only pin that you
use to disassemble the chain and must it be replaced each time with a
new pin ? Also, the instructions are not that clear, how does one
shorten the chain, pop out the regular pins and go. I have not done
this yet as I want to see what new chainrings sizes I get. The current
ones are 40x52. I read a note in here on setting correct chain length
and will follow that procedure.
Lastly, how well lubed are new components out of the box. Though
they all seemed lubed, I'm not sure how long to go before servicing.
Any suggestions ?
Thanks
...Tom
|
2605.14 | Previous notes on chains and pins | ATIS::BODGE | Andy Bodge | Mon Jul 12 1993 10:34 | 8 |
| re: .13, Shimano chains...
There was a discussion of Shimano chains and pins a few months back,
try DIR/TITLE=CHAIN and see what you come up with. I don't remember
the upshot, except that it was more complicated than it seemed it
should be...
Andy
|
2605.15 | A LITTLE AT A TIME... | WMOIS::GIROUARD_C | | Mon Jul 12 1993 14:07 | 9 |
| Try micro adjusting that one gear using the barrel adjustment on the
derailleur. One gear can be a little off and the rest appear right
in.
Stuff is usually lubed well, however I have a big problem
(personally) with the stuff they use for the chains. I strip
the stuff and dab on PEDRO's...
Chip
|
2605.16 | | JURA::PELAZ::MACFADYEN | | Mon Jul 12 1993 17:27 | 12 |
| Re Hyperglide chaina: I think the deal is that whenever you break the chain
you have to throw away the rivet where you broke the chain with a new black
rivet.
Re setting the indexing: as Chip says, fiddle with the barrel adjuster to
see if that helps. The b-tension adjustment screw may help too, I usually
set this so that the derailleur jockey wheels run as close as possible to
the block. Also check that the limit screw on the derailleur isn't
inhibiting the shift to largest cog.
Rod
|
2605.17 | new chainrings on, new bike on hold.... | ZEKE::SZCZ | | Wed Jul 14 1993 10:05 | 45 |
| Here's where I'm at with the upgrade:
From past attempts, I new I could not easily find new chain rings
for the bolt pattern on the Stronglight cranks. The bolt center to
center measurement is 74MM. So, to make the upgrade complete, I went
and ordered the Shimano 105 cranks, 175's (up from 170's) with a 39x53
gearing. I also said, what the heck and ordered the front derailleur
too (so the new bike will have to wait....). I installed the components
last night and took a quick spin around the block. The grinding is gone
and the system shifts very smoothly. I tuned in the barrel adjuster for
the larger cogs in the rear and that seems to have solved the problem.
I plan a good test ride today at lunch to shake it out a bit further.
The only remaining adjustment is to set the correct chain length, I've
left it long until the gearing was complete. I will likely adjust it
tonight.
Another question: The new cranks came with allen bolts to hold the
arms on, no dust caps, as there is a gray rubber washer that seals the
threads. The bottom bracket on the bike is a Shimano sealed cartridge
installed earlier this season. It had 14mm bolts and dust caps. Is
there any difference in strength or holding power. My concern is
generated because I have had previous problems with the left crank
working loose (several seasons ago) and do not want a repeat. I like
to set it and forget it. Going to carry the correct size allen wrench
in my seat bag for a while to be sure.
An curious observation, when I was adjusting the front derailleur,
the instructions seemed incorrect in terms of which adjustment screw
moved the cage. When I followed the instructions, I got it to the
point where the cage would not move off the small chain ring. When I
reversed the procedure, it tuned in fine. Either I was too tired and
read wrong, or the instructions are incorrect. Anyone have similar
experience or did I do something totally wrong ?
Another surprize was just how little difference a 175 crank arm is
compared to a 170. I got my metrics screwed up a was expecting a
bigger difference. It just doesn't seem like all that much though
one of my riding friends says it will help me climb better (I'll take
anything that'll help in that department). We'll see.....
...Tom
|
2605.18 | | NOVA::FISHER | DEC Rdb/Dinosaur | Wed Jul 14 1993 11:55 | 10 |
| The first time I went from 170 to 172.5 I found that I had muscle aches
on both top and bottom of my quads. I attributed this to a slightly
greater use of the muscle. Never had any difference since.
The current "low profile" DuraAce crank also has an Allen bolt. At
first I was worried about getting enough torque on it and used the 14
mm hex head to do the tightening and then removed that and put the
allen head bolt in for the final step. I no longer do that.
ed
|
2605.19 | | JURA::PELAZ::MACFADYEN | On a brighter note | Thu Jul 15 1993 05:53 | 7 |
| I went from 170 to 175 cranks last season with no problems. Like many things
in cycling, whether they actually deliver 'better climbing' is very to measure;
it certainly wasn't as if I was suddenly going 2kph faster on every hill.
But they do feel more natural for my leg length.
Rod
|
2605.20 | First real ride a success ! | ZEKE::SZCZ | | Thu Jul 15 1993 10:19 | 23 |
|
Yesterday at lunch was the first real test. Went out of ZKO and did
19 miles. Only one way to describe the performance.......SWEET !
The bike has not felt that smooth or shifted that cleanly and QUIETLY !
since it was brand new. Even then, it was not as quiet as the ratchet
in the new FW is quieter then the old.
I went out at what I thought to be a leisurely pace and ended up with
one of the best times for the 19 mile route this season. I was very
surprized as I took care not to push the new components too hard until
I get some confidence in my handiwork. No special aches from the
longer crank arms. The only real notice is one shifts from the 53
chainring to the 39. Its clearly a different jump then the old 52 to
40. I found myself wanting to stay in the 53 more, gotta watch the
knees.
Overall, I must say I'm glad I put out the bucks for the upgrade. With
it riding this smoothly, I can live a bit longer without the new bike
(like I got a choice).
Thanks again to all for the advice.
...Tom
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