gearing question
12-21-08, 05:57 PM
#1
maxd
Thread Starter
Join Date: Oct 2008
Posts: 42
Bikes: specialized rockhopper 02(?), 1972 raleigh supercourse
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
gearing question
anybody in here know off hand iff my rear derailleur shimano RD-M737, will work with a 9 speed cassette? it says 8 SIS on the pulley cage, but i did throw some extra 9 speed deore shifters on the bike. just would like to know for sure before i take apart some stuff. thanks.
12-21-08, 07:02 PM
#3
Still kicking.
Won't work.
__________________
Appreciate the old bikes more than the new.
Appreciate the old bikes more than the new.
12-21-08, 07:43 PM
#5
Still kicking.
Doesn't have the range of movement.
__________________
Appreciate the old bikes more than the new.
Appreciate the old bikes more than the new.
12-21-08, 08:18 PM
#6
Senior Member
Join Date: Aug 2007
Posts: 624
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
i have an old 7 speed derail on a 9 speed bike, works fine, technically they are not compatible (range issue) but i've never had a problem, most of the time you can get away with it but its not "right" it was my understanding that 8speed cassettes are slightly narrower (distance from big cog to little cog) than 9 speed ones but i've been told by people on this forum that that is not true, regardless it seems to work just fine most of the time (but you can't be 100% sure w/o trying
12-21-08, 10:24 PM
#7
maxd
Thread Starter
Join Date: Oct 2008
Posts: 42
Bikes: specialized rockhopper 02(?), 1972 raleigh supercourse
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
yea so i just went ahead and did it, no probs, just have to do a few rear derailleur adjustments, but shifts onto each cog ok, the problem now is having it stay on the cog while pedaling =.
thanks.
thanks.
12-21-08, 11:02 PM
#8
Senior Member
Join Date: Aug 2007
Posts: 624
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
staying on cog while pedaling is one (or more) of 3 probs, 1 improper cable tension, 2 bent derail hanger, 3 worn chain/cassette
the most likely is #1
the most likely is #1
12-22-08, 02:10 PM
#9
maxd
Thread Starter
Join Date: Oct 2008
Posts: 42
Bikes: specialized rockhopper 02(?), 1972 raleigh supercourse
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
12-22-08, 03:22 PM
#10
Senior Member
Join Date: Mar 2002
Location: NJ
Posts: 3,084
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 4 Post(s)
Likes: 0
Liked 5 Times
in
4 Posts
you'll want a 9speed chain. mostly, the shifter must match the cassette, but there's as much "swing" in a 8speed cassette as there is in a 9.
good luck
good luck
12-22-08, 10:19 PM
#11
Senior Member
Join Date: Aug 2007
Posts: 624
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
yeah i assumed when you switched to 9 speed that you switched to chain cassette and shifters, cause the 8 speed chain is wider than the 9 speed one (10speed is even thinner) so the xtra wide chain catches on the ramps of the next size up ring since the gears on a 9 speed cassette are closer together and it jumps around,
