quill stem not tight enough
#1
long live Guthrie
Thread Starter
Join Date: Dec 2008
Location: Philadelphia
Posts: 6
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
quill stem not tight enough
I bought a cinelli quill stem tonight and I can't get it tight enough in the head tube to keep the stem from turning side to side under pressure. What am I missing here?
The wedge style is like so:
The wedge style is like so:
#2
Senior Member
Join Date: Apr 2009
Location: New Rochelle, NY
Posts: 38,713
Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter
Mentioned: 140 Post(s)
Tagged: 1 Thread(s)
Quoted: 5782 Post(s)
Liked 2,578 Times
in
1,429 Posts
Start by checking that the wedge thread and exterior is smooth and well lubed. Test it by turning the nut with the stem out of the bike. The wedge should draw in and flare the base without much torque required. If it doesn't, dis-assemble the wedge and bolt, and see if possibly a burr in the conical ID of the stem is blocking the movement of the wedge.
When the stem is OK, assemble it into a clean steerer, with only a light film of grease or oil.
You shouldn't have to do this, but you can also increase the holding power by coating the outside of the lower area (where it flares) with coarse lapping compound.
When the stem is OK, assemble it into a clean steerer, with only a light film of grease or oil.
You shouldn't have to do this, but you can also increase the holding power by coating the outside of the lower area (where it flares) with coarse lapping compound.
__________________
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
FB
Chain-L site
An ounce of diagnosis is worth a pound of cure.
Just because I'm tired of arguing, doesn't mean you're right.
“One accurate measurement is worth a thousand expert opinions” - Adm Grace Murray Hopper - USN
WARNING, I'm from New York. Thin skinned people should maintain safe distance.
#3
Senior Member
Join Date: Jul 2005
Posts: 7,487
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 140 Post(s)
Liked 162 Times
in
89 Posts
Let's get the terminology straight first. The stem goes into the fork's steerer tube, not the frame's head tube.
Does the stem seem to slide into the steerer tube without any play? It shouldn't be difficult to get in, but it shouldn't be a loose fit, either. The inside diameter of the fork's steerer tube should be 22.2mm.
Does the stem seem to slide into the steerer tube without any play? It shouldn't be difficult to get in, but it shouldn't be a loose fit, either. The inside diameter of the fork's steerer tube should be 22.2mm.
#4
Old fart
Join Date: Nov 2004
Location: Appleton WI
Posts: 24,786
Bikes: Several, mostly not name brands.
Mentioned: 153 Post(s)
Tagged: 0 Thread(s)
Quoted: 3588 Post(s)
Liked 3,400 Times
in
1,934 Posts
Are you certain you don't have a metric diameter (22.0mm) stem? Metric stems from Cinelli weren't common, but they do exist.
#6
Senior Member
Join Date: Sep 2009
Location: Up
Posts: 4,695
Bikes: Masi, Giant TCR, Eisentraut (retired), Jamis Aurora Elite, Zullo, Cannondale, 84 & 93 Stumpjumpers, Waterford, Tern D8, Bianchi, Gunner Roadie, Serotta, Serotta Duette, was gifted a Diamond Back
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Quoted: 305 Post(s)
Liked 2,038 Times
in
604 Posts
is it even close? Is there a lot of lateral play when you just slide it into the steerer?
Thread
Thread Starter
Forum
Replies
Last Post
Jason G
Track Cycling: Velodrome Racing and Training Area
7
08-03-11 09:24 PM