Have questions or want to discuss cycling? Join Now or Sign In to participate in the BikeRide community.

New: Take Part in the March Giveaway: Coming Soon 3/24


Old Bike/Bent Chainring
#1
Hi - please forgive my newbie questions:<br />
I have a thrift store bike that I'd like to use for short easy street rides. The bike is a Bridgestone Kabuki Skyway. I've done some research and know that it's an old bike probably from the late 70s early 80s and that it is Japanese.
Here's the problem - one of the chainrings is bent (not just a tooth but the whole ring). This causes the chain to come off - I know that my bike shop could try to bend it back but that doing so may not work/fix the problem. The chainrings are weird - only three bolts with a measurement between two adjacent bolts of 90mm (approx). My online perusing tells me that I probably can't find a replacement chainring.
So - can I just replace the whole crankset? How do I know what will fit? Will any 3 chainring crankset work? Thanks for your help (and patience!)

  Reply
#2
I don't know much about what came on this bike, but from the few online photos I see, it looks like a fairly standard two chainring crankset. Your's has a triple?<br />
I would think any normal road crankset should work. I'd stay away from the more high end current cranks that are made for 9/10 speed drive trains.
Here's a decent very low cost road triple:<br />
http://www.cambriabike.com/shopexd.asp?id=45378&page=SHIMANO+FC-2203+TRIPLE+ROAD+BIKE+CRANKSET
If you do have a triple, note that mtn bike cranks will have lower gearing than on a standard road crank.
Do you have the disk brakes? I had no idea they were around that far back.

  Reply
#3
I forget to mention - try straightening the chainrings first. I've actually had pretty good luck doing this. Although once they've bent once, they are a bit more likely to bend again.
Take the chain off the chainrings so it can spin freely and then just carefully bend the rings back to a straight line. Keep spinning the cranks so you can see where to adjust. Best to use smooth jawed pliers or an adjustable wrench if it will fit in there.

  Reply
#4
Thanks DaveM - I'll try to bend the chainring back but wanted to have a backup plan. I appreciate your help!

  Reply
#5
I also double checked the crankset and it definitely is only a double - don't know why I said it has three...either I can't count or I just mistyped. Good catch!

  Reply


Possibly Related Threads...
Thread
Author
Replies
Views
Last Post
 
2,832
06-02-2020, 07:16 PM
Last Post: Painkiller
 
3,266
06-23-2019, 01:51 PM
Last Post: MamboNumber5
 
26,738
09-24-2014, 01:25 PM
Last Post: cny-man
 
15,706
12-03-2013, 07:48 PM
Last Post: GeorgeET
 
16,999
11-04-2013, 09:02 PM
Last Post: billy247
 
50,475
04-28-2013, 11:24 AM
Last Post: nfmisso
 
7,167
03-24-2013, 12:45 PM
Last Post: dweenk
 
13,187
08-18-2012, 10:13 PM
Last Post: deep
 
7,579
04-30-2012, 09:26 PM
Last Post: bobtravers

Forum Jump:

[-]
10 Latest Posts
Expensive bikes with crappy wheels
Today 10:15 AM
Santini fluted frame
Today 07:44 AM
Where are you from and What is your favo...
Yesterday 11:43 PM
2007 Trek Pilot S.P.A. 5.2
Yesterday 07:06 PM
2010 Specialized Hardrock
03-26-2024 09:16 PM
1990 Specialized Rockhopper How to Fluff...
03-25-2024 07:05 PM
Thread busted on right pedal crank
03-24-2024 08:52 PM
Trek domane tyre
03-24-2024 05:48 PM
Modern rims crack at spoke holes
03-24-2024 05:32 PM
Cup & Cone — Simple & Durable or PITA & ...
03-24-2024 04:53 PM

[-]
Join BikeRide on Strava
Feel free to join if you are on Strava: www.strava.com/clubs/bikeridecom

[-]
Top 5 Posters This Month
no avatar 1. Painkiller
21 posts
no avatar 2. ReapThaWhirlwind
16 posts
no avatar 3. meamoantonio
15 posts
no avatar 4. GirishH
15 posts
no avatar 5. Jesper
15 posts