Sometimes I act before I think.
#1
Senior Member
Thread Starter
Sometimes I act before I think.
I’m getting some parts together for a future build. I picked up a Shimano RSX crankset today, while cleaning it I noticed the teeth were screwed up. So without any research I ordered 2 chainrings. So, I’m relaxing in my recliner doing what I should’ve done earlier, researching the crankset. So the chainrings are suppose to look like that. I looked closer at the two I just ordered, and yep they are the same. No one told me about this, and I’ve never owned RSX anything. I guess it doesn’t hurt to have extras. I’m a very impulsive person.
__________________
Semper fi
Semper fi
Likes For sloar:
#2
señor miembro
Join Date: Dec 2018
Location: Pac NW
Posts: 6,623
Bikes: '70s - '80s Campagnolo
Mentioned: 92 Post(s)
Tagged: 0 Thread(s)
Quoted: 3888 Post(s)
Liked 6,485 Times
in
3,209 Posts
Cancel before it ships.
#3
feros ferio
Join Date: Jul 2000
Location: www.ci.encinitas.ca.us
Posts: 21,798
Bikes: 1959 Capo Modell Campagnolo; 1960 Capo Sieger (2); 1962 Carlton Franco Suisse; 1970 Peugeot UO-8; 1982 Bianchi Campione d'Italia; 1988 Schwinn Project KOM-10;
Mentioned: 44 Post(s)
Tagged: 0 Thread(s)
Quoted: 1393 Post(s)
Liked 1,326 Times
in
837 Posts
Been there ... done that. I bought my Schwinn with a 38T Biopace middle ring, for which I sought round 40T replacement. I looked at the new Shimano unit at the bike shop, and the sales guy and I puzzled momentarily over the deformed teeth before simultaneously reaching the "aha -- it's supposed to be like that" realization.
__________________
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
#4
Senior Member
Join Date: Dec 2019
Location: South Shore of Long Island
Posts: 2,799
Bikes: 2010 Carrera Volans, 2015 C-Dale Trail 2sl, 2017 Raleigh Rush Hour, 2017 Blue Proseccio, 1992 Giant Perigee, 80s Gitane Rallye Tandem
Mentioned: 12 Post(s)
Tagged: 0 Thread(s)
Quoted: 1088 Post(s)
Liked 1,025 Times
in
723 Posts
Yup, they match up with pins that are a couple teeth ahead, the pins catch first, then the small teeth and the chain is shifted. Worked pretty good but had to explain to a lot of people these were normal. Usually MTB riders noticed it more.
#5
Senior Member
Join Date: Nov 2013
Location: Near Pottstown, PA: 30 miles NW of Philadelphia
Posts: 2,186
Bikes: 2 Trek Mtn, Cannondale R600 road, 6 vintage road bikes
Mentioned: 83 Post(s)
Tagged: 0 Thread(s)
Quoted: 472 Post(s)
Liked 1,028 Times
in
404 Posts
Yup, I met a CL lister to inspect his 95 Trek 850. Shifters gummed up and teeth on the chain rings all wacked - teeth here and there ground down way more than others. "Your kids have been ramming this thing over rocks! I'll have to replace those. Expensive." I sounded so authoritative as I was SO ignorant. I bought it anyway.
Weeks later I discover the idea of the teeth being intentionally shaped that way to improve shifting. I actually called the guy back to apologize to his kids. Boy I felt dumb. Now I work at an LBS and get to gently explain those teeth to folks sometimes.
That Trek 850 has been "dropped" and I ride it regularly. Those wacked teeth work great.
Weeks later I discover the idea of the teeth being intentionally shaped that way to improve shifting. I actually called the guy back to apologize to his kids. Boy I felt dumb. Now I work at an LBS and get to gently explain those teeth to folks sometimes.
That Trek 850 has been "dropped" and I ride it regularly. Those wacked teeth work great.
#7
Mr. Anachronism
Join Date: Jan 2013
Location: Somewhere west of Tobie's
Posts: 2,087
Bikes: fillet-brazed Chicago Schwinns, and some other stuff
Mentioned: 29 Post(s)
Tagged: 0 Thread(s)
Quoted: 526 Post(s)
Liked 256 Times
in
165 Posts
It's not just the RSX. Note the teeth at 2:00 and 6:00 on this FSA Gossamer crank. I had the same thoughts/epiphany.
__________________
"My only true wisdom is in knowing I have none" -Socrates
"My only true wisdom is in knowing I have none" -Socrates
#8
Senior Member
Yup, I met a CL lister to inspect his 95 Trek 850. Shifters gummed up and teeth on the chain rings all wacked - teeth here and there ground down way more than others. "Your kids have been ramming this thing over rocks! I'll have to replace those. Expensive." I sounded so authoritative as I was SO ignorant. I bought it anyway.
Weeks later I discover the idea of the teeth being intentionally shaped that way to improve shifting. I actually called the guy back to apologize to his kids. Boy I felt dumb. Now I work at an LBS and get to gently explain those teeth to folks sometimes.
That Trek 850 has been "dropped" and I ride it regularly. Those wacked teeth work great.
Weeks later I discover the idea of the teeth being intentionally shaped that way to improve shifting. I actually called the guy back to apologize to his kids. Boy I felt dumb. Now I work at an LBS and get to gently explain those teeth to folks sometimes.
That Trek 850 has been "dropped" and I ride it regularly. Those wacked teeth work great.
He bought the bike anyway.
#9
Ride, Wrench, Swap, Race
Join Date: Jan 2010
Location: Northern California
Posts: 9,194
Bikes: Cheltenham-Pedersen racer, Boulder F/S Paris-Roubaix, Varsity racer, '52 Christophe, '62 Continental, '92 Merckx, '75 Limongi, '76 Presto, '72 Gitane SC, '71 Schwinn SS, etc.
Mentioned: 132 Post(s)
Tagged: 0 Thread(s)
Quoted: 1565 Post(s)
Liked 1,296 Times
in
866 Posts
Yup, I met a CL lister to inspect his 95 Trek 850. Shifters gummed up and teeth on the chain rings all wacked - teeth here and there ground down way more than others. "Your kids have been ramming this thing over rocks! I'll have to replace those. Expensive." I sounded so authoritative as I was SO ignorant. I bought it anyway.
Weeks later I discover the idea of the teeth being intentionally shaped that way to improve shifting. I actually called the guy back to apologize to his kids. Boy I felt dumb. Now I work at an LBS and get to gently explain those teeth to folks sometimes...
Weeks later I discover the idea of the teeth being intentionally shaped that way to improve shifting. I actually called the guy back to apologize to his kids. Boy I felt dumb. Now I work at an LBS and get to gently explain those teeth to folks sometimes...
Turned out there were other serious issues with the bike, related to this guy's own willy-nilly parts-swapping.
I admonished him to appreciate that the kids had gotten enough real use out of the bike to break the axle, and swapped his wheel for a stronger one with the correct number of sprockets.
Bike repair gets pretty hilarious to the point that I will occasionally entertain a bike's owner with a sing-song o'er-the-top narrative of how the bike might really have come to have all of it's mechanical maladies.
Last edited by dddd; 03-13-20 at 03:57 PM.