Broken tooth
08-09-13 | 04:47 PM
#1
Thread Starter
Senior Member
Joined: Jan 2012
Posts: 70
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From: California
Bikes: 1979 Raleigh Super Grand Prix, 80's Suteki, Alpine Pro, POS mtn bike from target
Broken tooth
Just found a broken tooth on my SunTour Perfect V-GT freewheel on the 4th largest cog (5 speed total). The freewheel itself is on my '79 Raleigh SGP, and I assume it's stock. Is it possible to replace the single cog, or would it be easier to just get a new 5-S freewheel instead?
P.S: I understand it may be possible to just ignore the broken tooth and not use that gear, but I would prefer to deal with it and not just ignore it.
P.S: I understand it may be possible to just ignore the broken tooth and not use that gear, but I would prefer to deal with it and not just ignore it.
08-09-13 | 05:10 PM
#2
Mechanic/Tourist
Joined: Apr 2007
Posts: 7,522
Likes: 12
From: Syracuse, NY
Bikes: 2008 Novara Randonee - love it. Previous bikes:Motobecane Mirage, 1972 Moto Grand Jubilee (my fave), Jackson Rake 16, 1983 C'dale ST500.
You have three choices, only two of which I would recommend. First, ride as is - there are several teeth wrapped on that cog, so if that one does not engage another will. Second, buy a 5/6 speed freewheel (replace the chain at the same time). Third, pay a lot of money for a vintage Suntour cog if you can get the right size.
Last edited by cny-bikeman; 08-09-13 at 05:33 PM.
08-09-13 | 05:30 PM
#3
Senior Member
Joined: Apr 2009
Posts: 39,897
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From: New Rochelle, NY
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
Ignore it and continue using the freewheel. After this one was made, Shimano started making feewheels with skipped, or severely cut down teeth on the larger sprockets as an aid to shifting.
Not having this tooth won't hurt anything, and (who knows?), might even improve shifting.
If/when you decide to replace the freewheel you should replace the chain also.
Not having this tooth won't hurt anything, and (who knows?), might even improve shifting.
If/when you decide to replace the freewheel you should replace the chain also.
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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
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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.
08-09-13 | 11:43 PM
#4
Full Member
Joined: Jun 2013
Posts: 474
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From: AdMo
Bikes: cannondales 84 ST500; 87SR500; 95 CAAD 3 Silk Road 500; 99 CAAD 3 Frameset(project)
a tooth!? i lost an entire cog on a ride. a suntour winner pro, at that! did just fine without that cog. suntour freewheels are not cheap. i got super lucky finding one for $20 a couple of days later.
ok, shifting was a little rough...but, i got home. you'll be ok
ok, shifting was a little rough...but, i got home. you'll be ok
Last edited by Pibber; 08-09-13 at 11:47 PM.
08-10-13 | 07:12 AM
#5
Roadkill
Joined: Sep 2004
Posts: 858
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From: East Tennessee
Bikes: 2002 Lightspeed Classic; 2010 Pedalforce RS
It probably didn't just fall off, maybe it broke loose from the spider?
08-10-13 | 08:33 AM
#6
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Joined: Jun 2013
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From: AdMo
Bikes: cannondales 84 ST500; 87SR500; 95 CAAD 3 Silk Road 500; 99 CAAD 3 Frameset(project)
I'm not exactly sure what happened, but i was on my fifth cog, out of six, had just started from an intersection when i nearly fell off the bike, my right foot slammed to the ground and i heard something tinkling on the asphalt behind me. Initially, only half the cog came off. I tested it, it rode and 8 miles later the rest of it fell off. Shifting to the faster gears was a little difficult if i was coming to a flat after a hill, but it got me home.
