Shimano Dura Ace freewheel on a Campy hub
08-02-16, 02:35 PM
#1
Senior Member
Thread Starter
Join Date: Oct 2008
Location: Akron, OH
Posts: 430
Bikes: 2008 Seven Axiom Steel, 1984 Colnago Nuovo Mexico, 2008 Cervelo P2C, 2000 Trek Multitrack 7200
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 17 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Shimano Dura Ace freewheel on a Campy hub
Several related questions about my 1984 (?) Colnago Nuovo Mexico. I've dealt with "chain rub" on the inside of my front derailleur cage in high and low gears, only under load, since I bought this bike. The cage is alligned properly and no amount of trimming on my part will get rid of it. It's not horrible, but it's there and annoying. Today I noticed that the freewheel is a Shimano DuraAce MF 7400, six cogs (13, 14, 15, 16, 17, 19). This seems strange to me since the hub and rear derailleur are Campy Super Record. The date on the rear derailleur is 1984. So, would this freewheel be original equipment on this "made in Italy" bike? If not, would a Campy freewheel solve my chain rub problem? If not, what about a Regina chain, assuming that's original equipment? Finally, if I switch to a Campy freewheel, which run a lot of money on eBay, what about thread compatibility? Am I correct that English and Italian threads are interchangeable?
Tsapp
Tsapp
08-02-16, 06:11 PM
#2
If I own it, I ride it
Join Date: Nov 2005
Location: Cardinal Country
Posts: 5,580
Bikes: Lejeune(14), Raleigh, Raysport, Jan De Reus, Gazelle, Masi, B. Carré(4), Springfield, Greg Lemond, Andre Bertin, Schwinn Paramount
Mentioned: 56 Post(s)
Tagged: 0 Thread(s)
Quoted: 591 Post(s)
Likes: 0
Liked 663 Times
in
312 Posts
Kind of surprised no one has jumped in on this. AFA the rub. If I understand you correctly, a minor adjustment of the derailleur stop screws should take care of your issue. Some of the rub issue could be due to frame flex or your chainwheel may slightly bent. Seen the latter on occasion. The DA freewheel was probably considered an upgrade over what was likely a Regina freewheel and is not the cause of your problem. So you don't need a Campag freewheel.
08-02-16, 07:55 PM
#3
feros ferio
Join Date: Jul 2000
Location: www.ci.encinitas.ca.us
Posts: 21,798
Bikes: 1959 Capo Modell Campagnolo; 1960 Capo Sieger (2); 1962 Carlton Franco Suisse; 1970 Peugeot UO-8; 1982 Bianchi Campione d'Italia; 1988 Schwinn Project KOM-10;
Mentioned: 44 Post(s)
Tagged: 0 Thread(s)
Quoted: 1393 Post(s)
Liked 1,325 Times
in
837 Posts
Almost. It's a class B fit, because of the difference in the angle at which the threads are grooved, even though diameter and threads per inch are the same. Switching back and forth between ISO and Italian freewheels could damage the hub's threads. I prefer to match threads, even in this sense, but others disagree with me.
__________________
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069
08-03-16, 06:05 AM
#4
Senior Member
Join Date: Nov 2004
Posts: 23,223
Mentioned: 654 Post(s)
Tagged: 1 Thread(s)
Quoted: 4722 Post(s)
Likes: 0
Liked 3,036 Times
in
1,874 Posts
+1, the freewheel is the least likely source of the problem. More likely causes include front derailleur adjustment, frame flex, crank flex or bent chainring.
08-03-16, 06:22 AM
#5
Senior Member
Join Date: Dec 2014
Location: Central Virginia
Posts: 4,781
Bikes: Numerous
Mentioned: 150 Post(s)
Tagged: 0 Thread(s)
Quoted: 1678 Post(s)
Liked 3,097 Times
in
913 Posts
Another +1 from me.
Freewheel is not the problem. Also, if you make a list of desirable and/or respected free wheels from that era, the Dura Ace is one of the top.
Freewheel is not the problem. Also, if you make a list of desirable and/or respected free wheels from that era, the Dura Ace is one of the top.
08-04-16, 10:06 AM
#6
Senior Member
Thread Starter
Join Date: Oct 2008
Location: Akron, OH
Posts: 430
Bikes: 2008 Seven Axiom Steel, 1984 Colnago Nuovo Mexico, 2008 Cervelo P2C, 2000 Trek Multitrack 7200
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 17 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
I've adjusted the limit screws on the front derailleur multiple times, even had my mechanic at my LBS try to get rid of the chain rub to no avail. The chain rings are not bent nor the front derailleur. Crank flex and/or frame flex is something I haven't considered. If that's the cause, I'm guessing it's something I just have to live with? Ugh!
Tsapp
Tsapp
08-04-16, 10:10 AM
#7
Senior Member
Join Date: Feb 2009
Posts: 2,522
Mentioned: 11 Post(s)
Tagged: 0 Thread(s)
Quoted: 1422 Post(s)
Likes: 0
Liked 7 Times
in
5 Posts
Several related questions about my 1984 (?) Colnago Nuovo Mexico. I've dealt with "chain rub" on the inside of my front derailleur cage in high and low gears, only under load, since I bought this bike. The cage is alligned properly and no amount of trimming on my part will get rid of it. It's not horrible, but it's there and annoying. Today I noticed that the freewheel is a Shimano DuraAce MF 7400, six cogs (13, 14, 15, 16, 17, 19). This seems strange to me since the hub and rear derailleur are Campy Super Record. The date on the rear derailleur is 1984. So, would this freewheel be original equipment on this "made in Italy" bike? If not, would a Campy freewheel solve my chain rub problem? If not, what about a Regina chain, assuming that's original equipment? Finally, if I switch to a Campy freewheel, which run a lot of money on eBay, what about thread compatibility? Am I correct that English and Italian threads are interchangeable?
Tsapp
Tsapp
Welcome to the 80's. This was pretty common then. Cranks flexed more, frames flexed more, that's how it was.
08-04-16, 11:26 AM
#9
Cat 6
Join Date: Dec 2007
Location: Mountain Brook, AL
Posts: 7,482
Mentioned: 27 Post(s)
Tagged: 0 Thread(s)
Quoted: 500 Post(s)
Liked 183 Times
in
118 Posts
Bent chainring. frame flex, or just a flexy crank. (My Stronglight 104 flexes like this)
__________________
72 Frejus (for sale), Holdsworth Record (for sale), special CNC & Gitane Interclub / 74 Italvega NR (for sale) / c80 French / 82 Raleigh Intl MkII f&f (for sale)/ 83 Trek 620 (for sale)/ 84 Bruce Gordon Chinook (for sale)/ 85 Ron Cooper / 87 Centurion IM MV (for sale) / 03 Casati Dardo / 08 BF IRO / 09 Dogma FPX / 09 Giant TCX0 / 10 Vassago Fisticuff
72 Frejus (for sale), Holdsworth Record (for sale), special CNC & Gitane Interclub / 74 Italvega NR (for sale) / c80 French / 82 Raleigh Intl MkII f&f (for sale)/ 83 Trek 620 (for sale)/ 84 Bruce Gordon Chinook (for sale)/ 85 Ron Cooper / 87 Centurion IM MV (for sale) / 03 Casati Dardo / 08 BF IRO / 09 Dogma FPX / 09 Giant TCX0 / 10 Vassago Fisticuff
