Go Back  Bike Forums > Bike Forums > Bicycle Mechanics
Reload this Page >

R&R of older bike, chain related question

Notices
Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

R&R of older bike, chain related question

Old 01-07-15, 07:50 PM
  #1  
XtraSpecialK
Junior Member
Thread Starter
 
XtraSpecialK's Avatar
 
Join Date: Jan 2015
Location: Northern Virginia
Posts: 10

Bikes: 1992 Reflex

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
R&R of older bike, chain related question

I have a chain related question, I did look through previous posts using the search function and went to the Park tool website and Sheldon Browns website too, and I seem to get sucked down one rabbit hole after another so please excuse me if this is a ridiculous question that's been asked before and I missed it.

A little background before the question. I am R&R-ing my 23 year old Reflex bicycle. I've owned it since it was new and have kept it in pretty good condition but the last few years have been hard on it so I wanted to freshen it up before spring hits.
It is a 21 speed mountain bike with no suspension (first gen mountain bike). 26" wheels.

It has Shimano Deore XT components. The front sprockets are Shimano SG (D-48, D-38, D-28) and the rear cartridge is a Shimano 7 speed Hyperglide.

As part of my R&R I want to replace the chain. I am pretty sure I need a 1/2" x 3/32" chain with at least 108 links (that's how many mine has..) But I could be wrong.
When I search for a replacement chain I see them listed for 10 speed, 11 speed, 8 speed....? My bike is a 21 speed. Are they referring to the number of sprockets on the cassette? I didn't see one for a 7 speed bike....

Thanks in advance for your help, and all advice is welcome if you have any other tips for my refurb.
XtraSpecialK is offline  
Old 01-07-15, 08:33 PM
  #2  
HillRider
Senior Member
 
Join Date: Aug 2005
Location: Pittsburgh, PA
Posts: 32,860

Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!

Mentioned: 38 Post(s)
Tagged: 0 Thread(s)
Quoted: 1671 Post(s)
Likes: 0
Liked 530 Times in 397 Posts
Yes, you need a nominal 1/2"x3/32 as apart from a 1/2"x1/8" chain meant for a single speed drivetrain. Derailleur chain width nomenclature refers to the number of cogs in the freewheel or cassette, not the total number of possible combinations. In your case you need what is sold as a 7/8-speed chain or sometimes called just an an 8-speed chain. Narrower 9 and 10-speed chains will work but are generally more expensive and not required.

As to the length, most chains come with 112 or 114 links and are "cut" to the proper length for each installation using a chain tool. All Shimano chains come with a specific joining pin that must be used. SRAM, Wipperman and KMC chains come with a master link that can be taken apart and reused for those who prefer to clean their chains off the bike. KMC's master links can be used on Shimano chains but have to be purchased separately.
HillRider is offline  
Old 01-08-15, 02:43 AM
  #3  
FBinNY 
Senior Member
 
Join Date: Apr 2009
Location: New Rochelle, NY
Posts: 35,964

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: 125 Post(s)
Tagged: 1 Thread(s)
Quoted: 4366 Post(s)
Likes: 0
Liked 32 Times in 31 Posts
+1 to all above. You want an 8s chain which is the just about the same outside width as a 7s chain. FYI while people find issues with wikipedia, it turns out that their section on bike chains is pretty decent. Scroll down and you'll find a table on chain widths.
__________________
FB
Chain-L site

An ounce of diagnosis is worth a pound of cure.

“Never argue with an idiot. He will only bring you down to his level and beat you with experience.”, George Carlin

“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.
FBinNY is offline  
Old 01-08-15, 06:38 AM
  #4  
Phil_gretz
Journeyman Bike Commuter
 
Phil_gretz's Avatar
 
Join Date: Aug 2009
Location: Alexandria, VA
Posts: 6,668

Bikes: '71 Jeunet 640, '79 Peugeot PXN10LE, '88 Fuji Saratoga, '13 Motobecane Fantom29 HT, '16 Motobecane Turino Pro Disc, '16 Motobecane Gran Premio Elite, '18 Velobuild VB-R-022

Mentioned: 22 Post(s)
Tagged: 0 Thread(s)
Quoted: 1311 Post(s)
Liked 1,188 Times in 642 Posts
Originally Posted by XtraSpecialK View Post
Thanks in advance for your help, and all advice is welcome if you have any other tips for my refurb.

Where are you in NoVa? I'm up in Sterling, if you need a hand with anything. I like the SRAM PC-830s for an inexpensive general purpose chain. Phil G.
Phil_gretz is offline  
Old 01-08-15, 10:21 AM
  #5  
XtraSpecialK
Junior Member
Thread Starter
 
XtraSpecialK's Avatar
 
Join Date: Jan 2015
Location: Northern Virginia
Posts: 10

Bikes: 1992 Reflex

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Thanks for all the replies!!!!!

Phil, I'm on the border of Herndon and Sterling.
I'll send a PM with my contact info.

Thanks!!!

Edit.....Couldn't send PM because I don't have 50 posts on this forum...only 47 more to go now..lol

Email sent, hopefully it goes through.

Last edited by XtraSpecialK; 01-08-15 at 12:08 PM.
XtraSpecialK is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
onyerleft
General Cycling Discussion
15
04-27-18 08:19 AM
Legionayr
Bicycle Mechanics
4
10-16-14 11:25 AM
ChrisM3
Bicycle Mechanics
6
08-18-14 08:04 AM
rommer25
Bicycle Mechanics
4
12-22-11 10:36 PM
spamalope
Bicycle Mechanics
3
09-04-11 06:58 AM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.