Go Back  Bike Forums > Bike Forums > Classic & Vintage
Reload this Page >

8-speed chainset on a 7-speed Shimano 105

Notices
Classic & Vintage This forum is to discuss the many aspects of classic and vintage bicycles, including musclebikes, lightweights, middleweights, hi-wheelers, bone-shakers, safety bikes and much more.

8-speed chainset on a 7-speed Shimano 105

Old 07-09-13, 04:31 PM
  #1  
Seweryn
Senior Member
Thread Starter
 
Seweryn's Avatar
 
Join Date: Oct 2012
Location: Cill Chainnigh
Posts: 51

Bikes: Bianchi Specialissima X4, Pinarello Stelvio (in bits), Cannondale CAAD 10

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
8-speed chainset on a 7-speed Shimano 105

Hi All,

I am just after finalising a purchase of my new old bike and I have a few questions:

1. The current owner installed a 7-speed Shimano 105 onto the bike. I have a spare Shimano 600 Biopace tri-color crankset that is probably 8-speed (but I am not 100% sure). Would this work with the current setup exactly as it should?

2. If the crankset can be installed, would a 7 or an 8-speed chain be better, if I want to replace it?

3. What type of cassette is there - is this a freewheel or a traditional cassette and where would you find a replacement for it, as it looks like the current gear ratios may not exactly suit me.

Thank you and below I attach some photos of the drivetrain of the bike:







Seweryn is offline  
Old 07-09-13, 04:34 PM
  #2  
ThermionicScott 
7-speed cultist
 
ThermionicScott's Avatar
 
Join Date: Aug 2011
Location: CID
Posts: 20,113

Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers)

Mentioned: 88 Post(s)
Tagged: 0 Thread(s)
Quoted: 2797 Post(s)
Liked 748 Times in 525 Posts
An 8-speed chain should work with all of that.
__________________
Originally Posted by chandltp View Post
There's no such thing as too far.. just lack of time
Originally Posted by noglider
People in this forum are not typical.
RUSA #7498
ThermionicScott is offline  
Old 07-09-13, 05:43 PM
  #3  
bradtx
Senior Member
 
Join Date: Jun 2010
Location: Pearland, Texas
Posts: 7,576

Bikes: Cannondale, Trek, Raleigh, Santana

Mentioned: 13 Post(s)
Tagged: 0 Thread(s)
Quoted: 305 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Seweryn:
1. The 600 should be plug and play, but why? That 105 crankset is in splendid condition.
2. Either a 7S or 8S chain will work.
3. Can't tell from the photo if you have a freewheel or a freehub. Someone else maybe able to.

Brad
bradtx is offline  
Old 07-09-13, 06:08 PM
  #4  
RobbieTunes
Banned
 
Join Date: Dec 2007
Posts: 27,297
Mentioned: 34 Post(s)
Tagged: 1 Thread(s)
Quoted: 378 Post(s)
Liked 1,372 Times in 886 Posts
1. The current owner installed a 7-speed Shimano 105 onto the bike. I have a spare Shimano 600 Biopace tri-color crankset that is probably 8-speed (but I am not 100% sure). Would this work with the current setup exactly as it should?
Yes.

2. If the crankset can be installed, would a 7 or an 8-speed chain be better, if I want to replace it?
Same thing, only different; no problem.

3. What type of cassette is there - is this a freewheel or a traditional cassette and where would you find a replacement for it, as it looks like the current gear ratios may not exactly suit me.
a-Can't tell unless you take a picture from right above it, or right behind it.
b-7-sp cassettes are available on line, new and used.
c-7-sp freewheels are available on line, new and used.

I agree with Scott and Brad; you could sell the tricolor crankset and buy a new cassette/freewheel with the money.

If the spacers between cogs are all the same size, you probably have a cassette. If the spacers get bigger as the cogs get bigger, than you probably have a freewheel. Just a quick way to tell.

Welcome to our little forum.

Here and www.sheldonbrown.com are the best sources for all you want to know:

Last edited by RobbieTunes; 07-09-13 at 06:12 PM.
RobbieTunes is offline  
Old 07-09-13, 07:52 PM
  #5  
pastorbobnlnh 
Freewheel Medic
 
pastorbobnlnh's Avatar
 
Join Date: Oct 2005
Location: Ascending or Descending the NH Mountains NW of Concord!
Posts: 11,613

Bikes: Snazzy* Schwinns, Classy Cannondales, & a Lonely '83 Santana Tandem (* Ed.)

Mentioned: 100 Post(s)
Tagged: 0 Thread(s)
Quoted: 696 Post(s)
Liked 302 Times in 200 Posts
Originally Posted by Seweryn View Post
Hi All,

I am just after finalising a purchase of my new old bike and I have a few questions:

3. What type of cassette is there - is this a freewheel or a traditional cassette and where would you find a replacement for it, as it looks like the current gear ratios may not exactly suit me.

Thank you and below I attach some photos of the drivetrain of the bike:

You can't tell from this picture. Looks as if you have a Shimano Uniglide cassette or freewheel. I think I can see a "600" behind the dropout. If this is the case, it is a freewheel. A freewheel is an easy swap. If a cassette, more problematic.

The uniglide is not 100% compatible with hyperglide cassettes. Can you take the wheel off and take a closeup picture of just the smallest cog?
__________________
Bob
Dreaming about riding in NH's summertime!

Visit my websites:
FreeWheelSpa.com orpastorbobnlnh.com
pastorbobnlnh is offline  
Old 07-09-13, 11:57 PM
  #6  
Seweryn
Senior Member
Thread Starter
 
Seweryn's Avatar
 
Join Date: Oct 2012
Location: Cill Chainnigh
Posts: 51

Bikes: Bianchi Specialissima X4, Pinarello Stelvio (in bits), Cannondale CAAD 10

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by pastorbobnlnh View Post
You can't tell from this picture. Looks as if you have a Shimano Uniglide cassette or freewheel. I think I can see a "600" behind the dropout. If this is the case, it is a freewheel. A freewheel is an easy swap. If a cassette, more problematic.

The uniglide is not 100% compatible with hyperglide cassettes. Can you take the wheel off and take a closeup picture of just the smallest cog?
Thank you All for some comprehensive responses. This is all new to me, so I am still on the learning curve :-).

I will ask the owner regarding the cassette, as the bike is packed in a box and ready for shipping. I have never seen the bike, just bought it online and I am trying to plan for some unknown. I will probably replace the chain anyway, but may leave the crankset as it is and maybe replace the cassette, if I find out what type it is, and will update here.

By the way, I have a lot of pictures, so maybe this one will bring more light...

Really appreciate your help.

Seweryn is offline  
Old 07-10-13, 03:49 AM
  #7  
pastorbobnlnh 
Freewheel Medic
 
pastorbobnlnh's Avatar
 
Join Date: Oct 2005
Location: Ascending or Descending the NH Mountains NW of Concord!
Posts: 11,613

Bikes: Snazzy* Schwinns, Classy Cannondales, & a Lonely '83 Santana Tandem (* Ed.)

Mentioned: 100 Post(s)
Tagged: 0 Thread(s)
Quoted: 696 Post(s)
Liked 302 Times in 200 Posts
I'm almost certain you are dealing with a Uniglide Cassette. These were the first version of Shimano's cassettes.

They require two chain whips to remove. One to hold the cassette and the other to unthread the top cog from the freehub body. Once the top cog is unthreaded, the whole unit slips off the freehub body. Take a look here for the differences between freewheels, Uniglide, and Hyperglide.

Contact me via email and I might be able to help you out with a new cassette. (pastorbobnlnh "AT" gmail "DOT" com.
__________________
Bob
Dreaming about riding in NH's summertime!

Visit my websites:
FreeWheelSpa.com orpastorbobnlnh.com
pastorbobnlnh is offline  
Old 07-10-13, 04:20 AM
  #8  
Seweryn
Senior Member
Thread Starter
 
Seweryn's Avatar
 
Join Date: Oct 2012
Location: Cill Chainnigh
Posts: 51

Bikes: Bianchi Specialissima X4, Pinarello Stelvio (in bits), Cannondale CAAD 10

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Uniglide Cassette

Originally Posted by pastorbobnlnh View Post
I'm almost certain you are dealing with a Uniglide Cassette. These were the first version of Shimano's cassettes.

They require two chain whips to remove. One to hold the cassette and the other to unthread the top cog from the freehub body. Once the top cog is unthreaded, the whole unit slips off the freehub body. Take a look here for the differences between freewheels, Uniglide, and Hyperglide.

Contact me via email and I might be able to help you out with a new cassette. (pastorbobnlnh "AT" gmail "DOT" com.
Thank you, sound advice.

I sent you an email also.
Seweryn is offline  
Old 07-10-13, 04:48 AM
  #9  
Bikedued
Senior Member
 
Bikedued's Avatar
 
Join Date: Jul 2004
Posts: 10,980
Mentioned: 9 Post(s)
Tagged: 0 Thread(s)
Quoted: 157 Post(s)
Likes: 0
Liked 21 Times in 16 Posts
You can put another 7 speed cassette on it if it is the same type, but a modern 7 speed replacement cassette will not work on that freehub. It was a very short lived design that only accepted that one type of cassette. I have one bike like this, and it's going to be a sad day when the cassette finally wears out.,,,,BD
__________________
So many bikes, so little dime.
Bikedued is offline  
Old 07-10-13, 10:14 AM
  #10  
due ruote 
Senior Member
 
due ruote's Avatar
 
Join Date: Dec 2006
Posts: 7,343
Mentioned: 23 Post(s)
Tagged: 0 Thread(s)
Quoted: 774 Post(s)
Liked 263 Times in 178 Posts
Cassette hubs have a bulge on one side, whereas freewheel hubs are straight, which is why folks were asking for a picture from behind. If you have one like that, please post it.

My Stumpjumper came with 6 speed Uniglide and I swapped in a 7 speed Hyperglide body to open up the options. Is that possible here, or am I out of my depth?

By the way, that's a nice looking Bianchi.
due ruote is offline  
Old 07-10-13, 02:55 PM
  #11  
Seweryn
Senior Member
Thread Starter
 
Seweryn's Avatar
 
Join Date: Oct 2012
Location: Cill Chainnigh
Posts: 51

Bikes: Bianchi Specialissima X4, Pinarello Stelvio (in bits), Cannondale CAAD 10

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by due ruote View Post
Cassette hubs have a bulge on one side, whereas freewheel hubs are straight, which is why folks were asking for a picture from behind. If you have one like that, please post it.
Thank you, I have a good few pictures of the bike, and found this one, if it is of any help:



Originally Posted by due ruote View Post
By the way, that's a nice looking Bianchi.
Thanks, I like it as well. It is the late 1980's Specialissima X4 Reparto Corse SLX, but unfortunately is now equipped with Shimano 105. Still, can't wait to get it . Here she is:

Seweryn is offline  
Old 07-10-13, 03:17 PM
  #12  
due ruote 
Senior Member
 
due ruote's Avatar
 
Join Date: Dec 2006
Posts: 7,343
Mentioned: 23 Post(s)
Tagged: 0 Thread(s)
Quoted: 774 Post(s)
Liked 263 Times in 178 Posts
Originally Posted by Seweryn View Post
Thank you, I have a good few pictures of the bike, and found this one, if it is of any help:





Thanks, I like it as well. It is the late 1980's Specialissima X4 Reparto Corse SLX, but unfortunately is now equipped with Shimano 105. Still, can't wait to get it . Here she is:

Very nice! I'd be tempted to go with black housing, hoods and pedals just to keep it consistent, but it looks great either way. (Please do something about that rear brake housing though!)

That does look like a cassette hub. If you look at the link that Pastorbob supplied (post #7 ) and go to the "body transplant" section, you'll see that in all likelihood you can swap the body for a 7 speed Hyperglide body, which will give you lots of options for new cassettes. Of course, then you'll need some 7 speed shifters, unless you want to go with friction mode.
due ruote is offline  
Old 07-10-13, 03:31 PM
  #13  
Seweryn
Senior Member
Thread Starter
 
Seweryn's Avatar
 
Join Date: Oct 2012
Location: Cill Chainnigh
Posts: 51

Bikes: Bianchi Specialissima X4, Pinarello Stelvio (in bits), Cannondale CAAD 10

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by due ruote View Post
Very nice! I'd be tempted to go with black housing, hoods and pedals just to keep it consistent, but it looks great either way. (Please do something about that rear brake housing though!)
Thank you for your opinion, sounds good . Yeah, I will be tempted to do some cosmetic changes as soon as I get the bike.

Originally Posted by due ruote View Post
That does look like a cassette hub. If you look at the link that Pastorbob supplied (post #7 ) and go to the "body transplant" section, you'll see that in all likelihood you can swap the body for a 7 speed Hyperglide body, which will give you lots of options for new cassettes. Of course, then you'll need some 7 speed shifters, unless you want to go with friction mode.
Thanks, we are currently discussing the possible options with Pastorbob .
Seweryn is offline  
Old 07-11-13, 08:47 AM
  #14  
due ruote 
Senior Member
 
due ruote's Avatar
 
Join Date: Dec 2006
Posts: 7,343
Mentioned: 23 Post(s)
Tagged: 0 Thread(s)
Quoted: 774 Post(s)
Liked 263 Times in 178 Posts
Originally Posted by Seweryn View Post
Thank you for your opinion, sounds good . Yeah, I will be tempted to do some cosmetic changes as soon as I get the bike.


Thanks, we are currently discussing the possible options with Pastorbob .
Cool. Also I apparently brain cramped - you already have 7 speed shifters so forget my comment about needing new ones.
due ruote is offline  
Old 07-11-13, 08:50 AM
  #15  
Seweryn
Senior Member
Thread Starter
 
Seweryn's Avatar
 
Join Date: Oct 2012
Location: Cill Chainnigh
Posts: 51

Bikes: Bianchi Specialissima X4, Pinarello Stelvio (in bits), Cannondale CAAD 10

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by due ruote View Post
Cool. Also I apparently brain cramped - you already have 7 speed shifters so forget my comment about needing new ones.
No worries, thanks anyway .
Seweryn is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Miele Man
Classic & Vintage
11
10-05-16 04:24 PM
therh
Road Cycling
86
06-22-16 05:18 AM
miggy_smalls
Road Cycling
19
08-04-14 02:50 PM
montescalion
Bicycle Mechanics
9
04-15-10 10:02 PM

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.