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

1985 Eddy Merckx Century Freewheel

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.

1985 Eddy Merckx Century Freewheel

Old 01-02-21, 07:51 AM
  #1  
bikemike73
Senior Member
Thread Starter
 
Join Date: Mar 2016
Location: North of Boston
Posts: 419

Bikes: 1973 Schwinn Sports Tourer plus a " few" more :)

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 102 Post(s)
Likes: 0
Liked 80 Times in 64 Posts
1985 Eddy Merckx Century Freewheel

Hi,

I think I need to replace the freewheel and count 13-23.......


6 speed.

I am trying to find out if it is the original FW.

Cannot locate specs for this bike, It does have Shimano 600 components.

Would I have to get a 13-23 ?
Could I use a 14-24 ?

Would appreciate any and all help.

Thank you
bikemike73 is offline  
Old 01-02-21, 08:00 AM
  #2  
bikemig 
Senior Member
 
bikemig's Avatar
 
Join Date: Apr 2012
Location: Middle Earth (aka IA)
Posts: 18,711

Bikes: A bunch of old bikes and a few new ones

Mentioned: 161 Post(s)
Tagged: 0 Thread(s)
Quoted: 5195 Post(s)
Liked 1,797 Times in 1,174 Posts
You have a shimano 6400 rear derailleur. It can handle a max cog of 28 and a chain wrap of 26.

VeloBase.com - Component: Shimano RD-6400, 600 Ultegra

These numbers are likely conservative. Yes it can handle a 14-24. You should be fine with a 14-28 as well for those mountains (and hills) north of Boston. You can also run a 7 speed there if you like rather than a 6.
bikemig is online now  
Old 01-02-21, 08:17 AM
  #3  
rccardr 
aka: Dr. Cannondale
 
rccardr's Avatar
 
Join Date: Jul 2009
Posts: 6,478

Bikes: Lots. Just...lots.

Mentioned: 178 Post(s)
Tagged: 0 Thread(s)
Quoted: 1526 Post(s)
Liked 896 Times in 436 Posts
That's a seven speed cassette.
__________________
Hard at work in the Secret Underground Laboratory...
rccardr is offline  
Old 01-02-21, 08:22 AM
  #4  
repechage
Senior Member
 
Join Date: Jun 2006
Posts: 15,904
Mentioned: 104 Post(s)
Tagged: 0 Thread(s)
Quoted: 1908 Post(s)
Liked 735 Times in 573 Posts
Yep, notice the hint of the enlarged hub body adjacent to the cogs beyond the spokes.

you MIGHT be able to find individual cogs-
The last cog screws on to the set- a pair of chain whips purchased or fabricated will be required to take it apart.
repechage is offline  
Old 01-02-21, 08:24 AM
  #5  
joesch
Senior Member
 
joesch's Avatar
 
Join Date: Sep 2017
Location: Hotel CA / DFW
Posts: 938

Bikes: 83 Colnago Super, 87 50th Daccordi, 79 & 87 Guerciotti's, 90s Colnago Master and Titanio, 96 Serotta Colorado TG, 95/05 Colnago C40/C50, 08 Lemond Filmore FG SS, 12 Cervelo R3, 20/15 Surly Stragler & Steamroller

Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 293 Post(s)
Liked 193 Times in 141 Posts
Originally Posted by rccardr View Post
That's a seven speed cassette.
Freewheel or Cassette?
When it comes time to service or upgrade your bike, it is important to know which of these two systems is used on your bike.

https://www.sheldonbrown.com/free-k7.html
joesch is offline  
Old 01-02-21, 08:27 AM
  #6  
rccardr 
aka: Dr. Cannondale
 
rccardr's Avatar
 
Join Date: Jul 2009
Posts: 6,478

Bikes: Lots. Just...lots.

Mentioned: 178 Post(s)
Tagged: 0 Thread(s)
Quoted: 1526 Post(s)
Liked 896 Times in 436 Posts
ALL Shimano Tricolor hubs are freehub and take a cassette rather than a freewheel.
6400 (the original issue) was seven speed UG style cogs.
If one simply looks at the picture provided by the OP, one can count seven cogs.
That RD will shift up to a 28 large cog without much trouble.
__________________
Hard at work in the Secret Underground Laboratory...
rccardr is offline  
Old 01-02-21, 08:28 AM
  #7  
bikemike73
Senior Member
Thread Starter
 
Join Date: Mar 2016
Location: North of Boston
Posts: 419

Bikes: 1973 Schwinn Sports Tourer plus a " few" more :)

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 102 Post(s)
Likes: 0
Liked 80 Times in 64 Posts
rccardr you are RIGHT !!!!!

7 SPEED.

My old eyes do not see as well !!!!

Only had the bike for a week and couldn't really see that!!

I looked over the rest of the bike though

Do you know if this was original to the bike ?

And bikemig.... what does " chain wrap" mean ?

Could I use any brand cassette ? Or must use Shimano ?

Really appreciate all this help and knowledge !!!

Last edited by bikemike73; 01-02-21 at 08:41 AM.
bikemike73 is offline  
Old 01-02-21, 08:58 AM
  #8  
bikemig 
Senior Member
 
bikemig's Avatar
 
Join Date: Apr 2012
Location: Middle Earth (aka IA)
Posts: 18,711

Bikes: A bunch of old bikes and a few new ones

Mentioned: 161 Post(s)
Tagged: 0 Thread(s)
Quoted: 5195 Post(s)
Liked 1,797 Times in 1,174 Posts
Chain wrap: just figure out the difference between the 2 chainrings and then add the difference between the largest and smallest cogs.

https://branfordbike.com/rear-derail...20will%20shift.

7 speed shimano cassettes and shimano compatible cassettes are readily available although my guess is that choices are limited as to new cassettes.

Last edited by bikemig; 01-02-21 at 10:31 AM.
bikemig is online now  
Old 01-02-21, 10:29 AM
  #9  
bikemike73
Senior Member
Thread Starter
 
Join Date: Mar 2016
Location: North of Boston
Posts: 419

Bikes: 1973 Schwinn Sports Tourer plus a " few" more :)

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 102 Post(s)
Likes: 0
Liked 80 Times in 64 Posts
Great!!!

So a 14 x 24. OR a 14 x 28 cassette will work?

Just need a new chain?

I have a sram pc 830 good for up to 8 speed cassettes.

AND....is it hard to change out a cassette?

Never done one......only have done freewheels

Thank you ALL again for help.

It is greatly appreciated

Michael
bikemike73 is offline  
Old 01-02-21, 10:38 AM
  #10  
Spaghetti Legs 
Senior Member
 
Join Date: Dec 2014
Location: Central Virginia
Posts: 4,184

Bikes: Numerous

Mentioned: 102 Post(s)
Tagged: 0 Thread(s)
Quoted: 1285 Post(s)
Liked 862 Times in 378 Posts
As an FYI, the EM Century wasn’t sold until 1989. Reynolds 653 tubing in ‘89, then Columbus TSX the following years. Higher end frames from Merckx then were mostly sold frame/fork and customer fitted out as desired. Totally reasonable that Shimano 600 7 speed would be original to the bike.
__________________
N = '96 Colnago C40, '04 Wilier Alpe D'Huez, '10 Colnago EPS, '85 Merckx Pro, '89 Merckx Century, '86 Tommasini Professional, '04 Teschner Aero FX Pro, '05 Alan Carbon Cross, '86 De Rosa Professional, '82 Colnago Super, '95 Gios Compact Pro, '95 Carrera Zeus, '84 Basso Gap, ‘89 Cinelli Supercorsa, ‘83 Bianchi Specialissima, ‘85 Pinarello Record, Ritchey Breakaway Steel, '84 Paletti Super Prestige, Heron Randonneur
Spaghetti Legs is offline  
Old 01-02-21, 10:44 AM
  #11  
bikemike73
Senior Member
Thread Starter
 
Join Date: Mar 2016
Location: North of Boston
Posts: 419

Bikes: 1973 Schwinn Sports Tourer plus a " few" more :)

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 102 Post(s)
Likes: 0
Liked 80 Times in 64 Posts
Mmmmmmm

Seller said it was an 1985

Looked up what I thought was a century 1985 TSX and found 2 colors.

One was a match for the one I have

TSX Columbus tubing.
Is it possible I have a newer year ?
appreciate the responses and help
thank you

Last edited by bikemike73; 01-06-21 at 08:48 PM.
bikemike73 is offline  
Old 01-02-21, 11:31 AM
  #12  
KCT1986
Senior Member
 
Join Date: Jan 2016
Posts: 228
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 88 Post(s)
Liked 42 Times in 31 Posts
Originally Posted by bikemike73 View Post
Great!!!

So a 14 x 24. OR a 14 x 28 cassette will work?

Just need a new chain?

I have a sram pc 830 good for up to 8 speed cassettes.

AND....is it hard to change out a cassette?

Never done one......only have done freewheels

Thank you ALL again for help.

It is greatly appreciated

Michael
Based on the pic. It appears that you have a standard Hyperglide style cassette. This uses a lockring at the outer end of the freehub body. This is easy to work on with the proper tools. Need a splined cassette lockring tool, (similar to the tool used to remove a Shimano freewheel) and a chain whip to hold the cassette. Really easy to learn.

Just do a search for video.
KCT1986 is online now  
Old 01-02-21, 11:44 AM
  #13  
bikemike73
Senior Member
Thread Starter
 
Join Date: Mar 2016
Location: North of Boston
Posts: 419

Bikes: 1973 Schwinn Sports Tourer plus a " few" more :)

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 102 Post(s)
Likes: 0
Liked 80 Times in 64 Posts
Hey KCT 1986

Hyperglide ????

I was told above that it is uniglide.

How can I tell for sure?
bikemike73 is offline  
Old 01-02-21, 12:25 PM
  #14  
jiangshi
OFG in Exile
 
Join Date: Jul 2013
Posts: 1,809
Mentioned: 23 Post(s)
Tagged: 0 Thread(s)
Quoted: 447 Post(s)
Liked 160 Times in 110 Posts
Originally Posted by bikemike73 View Post
Hey KCT 1986

Hyperglide ????

I was told above that it is uniglide.

How can I tell for sure?
Hyperglide has a lock ring, yours appears to have a lock ring.
jiangshi is offline  
Old 01-02-21, 12:54 PM
  #15  
3alarmer
Friendship is Magic
 
3alarmer's Avatar
 
Join Date: Nov 2010
Location: The Big Tomato
Posts: 19,720

Bikes: old ones

Mentioned: 280 Post(s)
Tagged: 0 Thread(s)
Quoted: 21296 Post(s)
Liked 4,183 Times in 3,066 Posts
.
...you can't buy Ultraglide cogs or cassettes new any more, anyway.
I, too, think that what you have on there is Hyperglide. But the six and seven speed availability from Shimano has disappeared in the 13-24 range.

There's still someone on Amazon selling seven speed cassettes made by Sunrace that will work, if that's Hyperglide.
Or, as suggested above, you can run a larger cog on a wider range cogset. Those are easier to find now.
3alarmer is offline  
Old 01-02-21, 02:47 PM
  #16  
rccardr 
aka: Dr. Cannondale
 
rccardr's Avatar
 
Join Date: Jul 2009
Posts: 6,478

Bikes: Lots. Just...lots.

Mentioned: 178 Post(s)
Tagged: 0 Thread(s)
Quoted: 1526 Post(s)
Liked 896 Times in 436 Posts
It's hyperglide, which makes it 6401.
Frame serial number will yield the correct build date.
__________________
Hard at work in the Secret Underground Laboratory...
rccardr is offline  
Old 01-03-21, 08:05 AM
  #17  
bikemike73
Senior Member
Thread Starter
 
Join Date: Mar 2016
Location: North of Boston
Posts: 419

Bikes: 1973 Schwinn Sports Tourer plus a " few" more :)

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 102 Post(s)
Likes: 0
Liked 80 Times in 64 Posts
Ok

I will take a pic of the BB and post.

I'll see if there are any numbers on the cassette as well

REALLY appreciate every ones help.

Thank you
Thank you
bikemike73 is offline  
Old 01-03-21, 08:34 AM
  #18  
bikemig 
Senior Member
 
bikemig's Avatar
 
Join Date: Apr 2012
Location: Middle Earth (aka IA)
Posts: 18,711

Bikes: A bunch of old bikes and a few new ones

Mentioned: 161 Post(s)
Tagged: 0 Thread(s)
Quoted: 5195 Post(s)
Liked 1,797 Times in 1,174 Posts
Here is a 12-28 7 speed:

https://www.amazon.com/SunRace-7-Spe...g-goods&sr=1-9

You might want some better climbing gears for those mountains north of you.
bikemig is online now  
Old 01-03-21, 08:46 AM
  #19  
bikemike73
Senior Member
Thread Starter
 
Join Date: Mar 2016
Location: North of Boston
Posts: 419

Bikes: 1973 Schwinn Sports Tourer plus a " few" more :)

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 102 Post(s)
Likes: 0
Liked 80 Times in 64 Posts
Here are the pics !

You guys were RIGHT !!!!!

I saw " lock" on the cassette....... moved it a little....SURE ENOUGH..................HYPERGLIDE stamped right on it !!!!!

Not that I ever doubted you

THANK YOU
THANK YOU

Greatly appreciated.

NOW the next question.....

Can it take a 14 x 28 as suggested above ????
Or go with 14 x 24 ??

There are some pretty good hills up here North of Boston !!!!

bikemike73 is offline  
Old 01-03-21, 10:41 AM
  #20  
plonz 
Senior Member
 
plonz's Avatar
 
Join Date: Mar 2015
Location: Western MI
Posts: 2,409
Mentioned: 43 Post(s)
Tagged: 0 Thread(s)
Quoted: 521 Post(s)
Liked 172 Times in 123 Posts
Living in the west part of the state, I’ve swapped out nearly everything with a big cog 25 and under in order to better negotiate the climbing. I’d go with either 12-28 or 14-28.
plonz is offline  
Likes For plonz:
Old 01-03-21, 10:51 AM
  #21  
bikemig 
Senior Member
 
bikemig's Avatar
 
Join Date: Apr 2012
Location: Middle Earth (aka IA)
Posts: 18,711

Bikes: A bunch of old bikes and a few new ones

Mentioned: 161 Post(s)
Tagged: 0 Thread(s)
Quoted: 5195 Post(s)
Liked 1,797 Times in 1,174 Posts
Heck I'd go 12-28 and give long and hard thought to a 110 BCD "compact" crank. That way you can run 50/34 (or a 48/34) upfront.

Or, if you really want good climbing gears, run a 46/30 upfront.

Velo Orange sells both.


There are other cranks with those 2 configurations available as well from other vendors.

Last edited by bikemig; 01-03-21 at 10:54 AM.
bikemig is online now  
Old 01-03-21, 11:04 AM
  #22  
bikemike73
Senior Member
Thread Starter
 
Join Date: Mar 2016
Location: North of Boston
Posts: 419

Bikes: 1973 Schwinn Sports Tourer plus a " few" more :)

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 102 Post(s)
Likes: 0
Liked 80 Times in 64 Posts
So the 12 - 28 will be no problem for shifting ?

The RD can handle it without issues ?

I know I am going to need a longer chain............right **********

Thank you again.

It is greatly appreciated all your expertise !!!!!
bikemike73 is offline  
Old 01-03-21, 11:12 AM
  #23  
alcjphil
Senior Member
 
alcjphil's Avatar
 
Join Date: Jun 2002
Location: Montreal, Quebec
Posts: 4,451
Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
Quoted: 1156 Post(s)
Liked 560 Times in 368 Posts
Originally Posted by bikemike73 View Post
So the 12 - 28 will be no problem for shifting ?

The RD can handle it without issues ?

I know I am going to need a longer chain............right **********

Thank you again.

It is greatly appreciated all your expertise !!!!!
When changing a cassette, even when changing for the same size, it is pretty much standard practice to change the chain as well unless yours is almost brand new. You will need to cut your new chain to the correct length
alcjphil is offline  
Old 01-03-21, 11:16 AM
  #24  
bikemike73
Senior Member
Thread Starter
 
Join Date: Mar 2016
Location: North of Boston
Posts: 419

Bikes: 1973 Schwinn Sports Tourer plus a " few" more :)

Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 102 Post(s)
Likes: 0
Liked 80 Times in 64 Posts
ok

but the one that is on there now is a 13-23

so just to confirm 12 - 28 will be no issue for the RD ?

Or smooth shifting ?

Thank you and again, appreciate all the responses
bikemike73 is offline  
Old 01-03-21, 11:21 AM
  #25  
CO_Hoya 
Señor Member
 
Join Date: Dec 2007
Location: Colorado
Posts: 879

Bikes: Yes

Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 222 Post(s)
Liked 161 Times in 92 Posts
Originally Posted by bikemike73 View Post
ok

but the one that is on there now is a 13-23

so just to confirm 12 - 28 will be no issue for the RD ?
Your derailleur appears to be an RD-6400 (link), and is rated for a max cog size of 28t.

So you should be fine.
CO_Hoya is offline  

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.