Really? I've been running 9-speed chains on old cranks with no adjustment in spacing for six months or more. No problem at all. Is this something you see or hear in your shop on a regular basis? I thought the problem with 9-speed chains on a 7/8 setup had more to do with the inner width.
Quoted message said:
Really. Sometimes people are mistakenly sold the wrong chains, and there have definitely been issues. Could be that it works fine on some (obviously it does!) based on wear, the original spacing between the chainrings, how straight they are, etc.
Correct. That's happened to me. Sometimes the chain would just sit in between the two chainrings without engaging onto either. I went in and asked for a bit wider chain: problem solved.
I have an older 7 speed cassette with 105 components. I am constantly trimming the front derailleur to prevent rubbing. I was wondering if an 8 or 9 speed chaing would reduce this need, and if there would be negative effects on the rear shifting? Any tips or advise??
I have an older 7 speed cassette with 105 components. I am constantly trimming the front derailleur to prevent rubbing. I was wondering if an 8 or 9 speed chaing would reduce this need, and if there would be negative effects on the rear shifting? Any tips or advise??
7 & 8-speed chains are pretty much interchangeable, as the spacing differences between the two cassettes are minimal. A 9-speed chain will most likely not do well on your crankset, probably trying to fall in-between your chainrings at times due to its narrower width.
Could be that the angle of your derailleur needs to be adjusted. Check also to see that there's not too much play in the derailleur pivots.
I have an older 7 speed cassette with 105 components. I am constantly trimming the front derailleur to prevent rubbing. I was wondering if an 8 or 9 speed chaing would reduce this need, and if there would be negative effects on the rear shifting? Any tips or advise??
7 & 8-speed chains are pretty much interchangeable, as the spacing differences between the two cassettes are minimal. A 9-speed chain will most likely not do well on your crankset, probably trying to fall in-between your chainrings at times due to its narrower width.
Really? I've been running 9-speed chains on old cranks with no adjustment in spacing for six months or more. No problem at all. Is this something you see or hear in your shop on a regular basis?
I thought the problem with 9-speed chains on a 7/8 setup had more to do with the inner width.
Really? I've been running 9-speed chains on old cranks with no adjustment in spacing for six months or more. No problem at all. Is this something you see or hear in your shop on a regular basis?
I thought the problem with 9-speed chains on a 7/8 setup had more to do with the inner width.
Really. Sometimes people are mistakenly sold the wrong chains, and there have definitely been issues. Could be that it works fine on some (obviously it does!) based on wear, the original spacing between the chainrings, how straight they are, etc.
"Dan Daniel" <[email hidden]> wrote in message news:[email hidden]...
Quoted message said:
Mike Jacoubowsky said:
Quoted message said:
I have an older 7 speed cassette with 105 components. I am constantly trimming the front derailleur to prevent rubbing. I was wondering if an 8 or 9 speed chaing would reduce this need, and if there would be negative effects on the rear shifting? Any tips or advise??
7 & 8-speed chains are pretty much interchangeable, as the spacing differences between the two cassettes are minimal. A 9-speed chain will most likely not do well on your crankset, probably trying to fall
in-between
Quoted message said:
Quoted message said:
your chainrings at times due to its narrower width.
Really? I've been running 9-speed chains on old cranks with no adjustment in spacing for six months or more. No problem at all. Is this something you see or hear in your shop on a regular basis?
I thought the problem with 9-speed chains on a 7/8 setup had more to do with the inner width.
I have an older 7 speed cassette with 105 components. I am constantly trimming the front derailleur to prevent rubbing. I was wondering if an 8 or 9 speed chaing would reduce this need, and if there would be negative effects on the rear shifting? Any tips or advise??
Try a SRAM PC48 (7/8 spd) chain. The side plates are chamfered to avoid just this problem. Jobst says they shift poorly as a result, but I've never really noticed.
Really? I've been running 9-speed chains on old cranks with no adjustment in spacing for six months or more. No problem at all. Is this something you see or hear in your shop on a regular basis?
I thought the problem with 9-speed chains on a 7/8 setup had more to do with the inner width.
Really. Sometimes people are mistakenly sold the wrong chains, and there have definitely been issues. Could be that it works fine on some (obviously it does!) based on wear, the original spacing between the chainrings, how straight they are, etc.
Have you noticed any pattern in the problems with 9-speed chains and chainrings? I ask because I have some old cranksets and have been moving them around, including onto 9-speed setups. I don't want to buy new cranks if I can avoid it.
For what it's worth, I've had a mid-80s 105 double crank with pre-9 Willow and SR chainrings on one bike. Bar-end shifters, so maybe that leads to different ways of dropping the chain onto the smaller ring than STI does it. And an early-90s LX crankset with original rings on a Rapidfire 9-speed with no problems. Soon I should be getting new chainrings for a Sakae triple crank and maybe a Suntour XC crank. Maybe I need to search out '9-speed' chainrings? Or drop back to 8-speed for those cranks.
biknfish-<< I have an older 7 speed cassette with 105 components. I am constantly trimming the front derailleur to prevent rubbing. I was wondering if an 8 or 9 speed chaing would reduce this need, and if there would be negative effects on the rear shifting? >><BR><BR>
You already have a 8s chain. A 9s chain won't shift well...moving the front sder around with STI is not uncommon.
Peter Chisholm Vecchio's Bicicletteria 1833 Pearl St. Boulder, CO, 80302 (303)440-3535 http://www.vecchios.com "Ruote convenzionali costruite eccezionalmente bene"
Dan Daniel <[email hidden]> wrote in message news:<[email hidden]>...
Quoted message said:
Mike Jacoubowsky said:
Quoted message said:
I have an older 7 speed cassette with 105 components. I am constantly trimming the front derailleur to prevent rubbing. I was wondering if an 8 or 9 speed chaing would reduce this need, and if there would be negative effects on the rear shifting? Any tips or advise??
7 & 8-speed chains are pretty much interchangeable, as the spacing differences between the two cassettes are minimal. A 9-speed chain will most likely not do well on your crankset, probably trying to fall in-between your chainrings at times due to its narrower width.
Really? I've been running 9-speed chains on old cranks with no adjustment in spacing for six months or more. No problem at all. Is this something you see or hear in your shop on a regular basis?
I have used 9-speed chains on older cranks, and have experienced this problem on rare occassions if I downshift very slowly and tentatively (with friction shifters). It's not enough of a problem to make me change cranks -- maybe it happens once every ten hours of riding. I imagine that with indexed shifting this would not be a problem but I don't know.
I have an older 7 speed cassette with 105 components. I am constantly trimming the front derailleur to prevent rubbing. I was wondering if an 8 or 9 speed chaing would reduce this need, and if there would be negative effects on the rear shifting? Any tips or advise??
First, check to make sure the der hasn't moved up on the tube, and that the mount isn't loose. I had that happen recently. Otherwise, I suspect you've got a cable that's not moving as freely as it should. 7 and 8 speed chains have so little dimesional difference (if any) that changing to an 8 won't help. The narrower 9-speed may not shift right; if the chain is *too* narrow, the der must move farther to the right get it to shift up a gear, and if the system is working correctly, your shifter's throw won't change, so you'd end up having to trim the der to the right...making the shifts down less certain. If the chain is rubbing, the cage isn't moving far enough or precisely enough. This can be due to cable, shifter or der adjustment, wear, crud or corrosion.
-- My email address is antispammed; pull WEEDS if replying via e-mail. Typoes are not a bug, they're a feature. Words processed in a facility that contains nuts.
Have you noticed any pattern in the problems with 9-speed chains and chainrings? I ask because I have some old cranksets and have been moving them around, including onto 9-speed setups. I don't want to buy new cranks if I can avoid it.
I'm running a Sugino Mighty Tour x 110 bolt pattern double, 50/34, in my Campy 10 sp system with pre 8sp rings. Zero problems.
Have you noticed any pattern in the problems with 9-speed chains and chainrings? I ask because I have some old cranksets and have been moving them around, including onto 9-speed setups. I don't want to buy new cranks if I can avoid it.
I'm running a Sugino Mighty Tour x 110 bolt pattern double, 50/34, in my Campy 10 sp system with pre 8sp rings. Zero problems.
Paul: The extra spacing that your cranks/chainrings are providing is actually a good thing, given the large gap (size difference) in your two chainrings. In general, the closer the chainrings are in size, the closer they have to be in terms of distance between them (width). People with true half-step gearing often had nasty problems with the chain slipping in between the rings unless they modified the system to reduce the spacing. And those with very big chainring differences would often find the chain flying off to the inside (on a downshift) unless the spacing were increased a bit.
--Mike Jacoubowsky Chain Reaction Bicycles www.ChainReaction.com IMBA, BikesBelong, NBDA member
"Paul Kopit" <[email hidden]> wrote in message news:[email hidden]...
Quoted message said:
Dan Daniel said:
Have you noticed any pattern in the problems with 9-speed chains and chainrings? I ask because I have some old cranksets and have been moving them around, including onto 9-speed setups. I don't want to buy new cranks if I can avoid it.
I'm running a Sugino Mighty Tour x 110 bolt pattern double, 50/34, in my Campy 10 sp system with pre 8sp rings. Zero problems.
In general, the closer the chainrings are in size, the closer they have to be in terms of distance between them (width). People with true half-step gearing often had nasty problems with the chain slipping in between the rings unless they modified the system to reduce the spacing. And those with very big chainring differences would often find the chain flying off to the inside (on a downshift) unless the spacing were increased a bit.
This is exactly correct.
I've had the chain slip problem when I would put a 53-46 on my front for certain races (Cat's Hill, for ex., except I knew about and corrected the problem before using it at Cat's Hill), and certainly had the same problem when I've played around with half-steps. It is actually difficult to get the right rings for this particular problem.
Conversely I've run a 53-33 front too, in a 9sp system. I've had to put 1 mm spacers between the 33t and the 5 crank arms to get the chain to drop down nicely.
