Do old Stronglight chainrings have "pointed" teeth?
10-23-23, 07:19 AM
#1
Senior Member
Thread Starter
Join Date: Sep 2017
Location: Eastern Shore, MD
Posts: 2,107
Bikes: Road ready: 1993 Koga Miyata City Liner Touring Hybrid, 1989 Centurion Sport DLX, "I Blame GP" Bridgestone CB-1. Projects: Yea, I got a problem....
Mentioned: 24 Post(s)
Tagged: 0 Thread(s)
Quoted: 753 Post(s)
Liked 737 Times
in
422 Posts
Do old Stronglight chainrings have "pointed" teeth?
I have a couple Stronglight cranksets that have much "sharper points" on the chainring teeth than other brands of chainrings I've seen unless their obviously worn out. Yesterday I brought home a supposedly low mileage Motobecane Grand Touring with a Stronglight crankset, and it has the same pointed teeth. So I'm wondering if this is how they are originaly cut? Or have I just never seen an unworn one?
10-23-23, 07:28 AM
#2
Old fart
Join Date: Nov 2004
Location: Appleton WI
Posts: 24,792
Bikes: Several, mostly not name brands.
Mentioned: 153 Post(s)
Tagged: 0 Thread(s)
Quoted: 3591 Post(s)
Liked 3,401 Times
in
1,935 Posts
Yes. Stronglight, TA, and some other rings manufactured in the 70s and earlier often came with pointed teeth.
Why? Don't know.
Why? Don't know.
10-23-23, 07:31 AM
#3
Senior Member
Join Date: Jun 2006
Posts: 20,305
Mentioned: 130 Post(s)
Tagged: 0 Thread(s)
Quoted: 3464 Post(s)
Liked 2,831 Times
in
1,997 Posts
That big ring does show quite a bit of shifting and or cross chain wear.
Likes For repechage:
10-23-23, 08:01 AM
#4
Senior Member
Thread Starter
Join Date: Sep 2017
Location: Eastern Shore, MD
Posts: 2,107
Bikes: Road ready: 1993 Koga Miyata City Liner Touring Hybrid, 1989 Centurion Sport DLX, "I Blame GP" Bridgestone CB-1. Projects: Yea, I got a problem....
Mentioned: 24 Post(s)
Tagged: 0 Thread(s)
Quoted: 753 Post(s)
Liked 737 Times
in
422 Posts
The chain doesn't show much wear with a gauge and doesn't "lift" much more than a new chain on Sugino ring with about 1000 miles on it. The chain could be original. The bike got new tires "recently" that still have the hairs, but there's no indication of any further maintenance. I picked up the correct crank puller so I'll have to have a Stronglight party and directly compare the rings I have.
10-23-23, 08:44 AM
#6
Senior Member
Join Date: Jan 2019
Location: Toledo Ohio
Posts: 1,497
Bikes: 1964 Huffy Sportsman, 1972 Fuji Newest, 1973 Schwinn Super Sport (3), 1982 Trek 412, 1983 Trek 700, 1989 Miyata 1000LT, 1991 Bianchi Boardwalk, plus others
Mentioned: 21 Post(s)
Tagged: 0 Thread(s)
Quoted: 583 Post(s)
Liked 700 Times
in
395 Posts
Interesting how things are not consistent. I have a steel ring that was just the opposite and had no points and the tops seemed wider than normal. Mine works fine.
Newer steel ring
Newer steel ring
10-23-23, 11:10 AM
#7
Senior Member
Join Date: Apr 2006
Location: Washington County, Vermont, USA
Posts: 3,778
Bikes: 1966 Dawes Double Blue, 1976 Raleigh Gran Sport, 1975 Raleigh Sprite 27, 1980 Univega Viva Sport, 1971 Gitane Tour de France, 1984 Lotus Classique, 1976 Motobecane Grand Record
Mentioned: 77 Post(s)
Tagged: 0 Thread(s)
Quoted: 765 Post(s)
Liked 660 Times
in
351 Posts
As others have said, the older Stronglight rings did have pointed teeth. Not sure when the changeover to less-pointed teeth happened. I have never noticed any functional difference between the two styles.
__________________
www.redclovercomponents.com
"Progress might have been all right once, but it has gone on too long."
--Ogden Nash
www.redclovercomponents.com
"Progress might have been all right once, but it has gone on too long."
--Ogden Nash
10-23-23, 11:14 AM
#8
Senior Member
Join Date: Jun 2006
Posts: 20,305
Mentioned: 130 Post(s)
Tagged: 0 Thread(s)
Quoted: 3464 Post(s)
Liked 2,831 Times
in
1,997 Posts
Pre and post CPSC?
I always thought amusing that the final workaround to the puncture test was test the bike with the chain in the big ring.
loopholes.
I always thought amusing that the final workaround to the puncture test was test the bike with the chain in the big ring.
loopholes.
10-23-23, 05:02 PM
#10
Senior Member
Join Date: Feb 2008
Location: Peoria, IL
Posts: 4,481
Mentioned: 86 Post(s)
Tagged: 0 Thread(s)
Quoted: 1830 Post(s)
Liked 3,383 Times
in
1,584 Posts
This is the Stronglight 93 on my Raleigh Gran Sport, back when I still owned it in the early 80's....
..yeah... they look relatively pointy.
Steve in Peoria
..yeah... they look relatively pointy.
Steve in Peoria
10-23-23, 05:25 PM
#11
Senior Member
Join Date: Aug 2010
Location: Central Florida, USA
Posts: 1,994
Bikes: Litespeed (9); Slingshot (9); Specialized (3); Kestrel (2); Cervelo (1); FELT (1); Trek (2)
Mentioned: 39 Post(s)
Tagged: 0 Thread(s)
Quoted: 436 Post(s)
Liked 3,480 Times
in
1,002 Posts
The Holy Hand Grenade of Antioch will take care of anything with big pointed teeth. 
__________________
WTB: Slingshot bicycle promotional documents (catalog, pamphlets, etc).
WTB: American Cycling May - Aug, Oct, Dec 1966.
WTB: Bicycle Guide issues 1984 (any); Jun 1987; Jul, Nov/Dec 1992; Apr 1994; 1996 -1998 (any)
WTB: Bike World issue Jun 1974.
WTB: Slingshot bicycle promotional documents (catalog, pamphlets, etc).
WTB: American Cycling May - Aug, Oct, Dec 1966.
WTB: Bicycle Guide issues 1984 (any); Jun 1987; Jul, Nov/Dec 1992; Apr 1994; 1996 -1998 (any)
WTB: Bike World issue Jun 1974.
Likes For SpeedofLite:
10-23-23, 08:51 PM
#12
Friendship is Magic
Join Date: Nov 2010
Location: Sacramento, CA
Posts: 22,985
Bikes: old ones
Mentioned: 304 Post(s)
Tagged: 0 Thread(s)
Quoted: 26427 Post(s)
Liked 10,384 Times
in
7,212 Posts
...I have no idea when they started rounding them off. But some of the ones I've had are pretty pointy.
__________________
