8 spd Dura Ace 7402 indexing problems

[heathcliff]

Hi don't know if anyone can help . I have finished fitting 8 spd DA to my '85 Merckx . All matching 7400 series drivetrain inc 7402 rear derailleur and down tube shifters, the cassette is a modern 8 spd Sora thing, but I assume it's the same spacing .
If i begin adjusting the indexing from the smallest sprocket up by the time i get to the larger sprockets the tension is too tight and the chain starts to skip. Am i missing something, never had this problem before . The frame is 126mm spaced and am using 130mm DA 8 spd hubs with the mushroomed nut, would this change in spacing throw the derailleur hanger out enough ? It all looks fine to the naked eye .

Any advice welcome !

 

[heathcliff]

Now sorted, I simply had the cable routed on the wrong side of the cable fixing nut ..

 

[rusty bodie]

Re:

you had me scratching my head as i have the same set up with the sora cassette etc on my 87 merckx.

rookie error or a senior moment - we all get them!!



:roll:

 

[heathcliff]

Yes I think I was a little confused with the cable routing as the fixing nut is hidden inside the mech ! Amazing the difference a slight change in cable angle can make !
I've added a snap of my somewhat tatty bike from late last night after finally sorting out the problem !

 

[rusty bodie]

Re:

that's a nice looking bike but that saddle resembles something that gillette might manufacture!

:shock:

 

[heathcliff]

Just an old Flite Titanium Alpes I've had knocking
around for the past 20 years . Actually very
comfortable I used to courier with it !

 

[Jamiedyer]

Thats not tatty! thats a lovely Merckx

Jamie

 

[rusty bodie]

Thats not tatty! thats a lovely Merckx

Jamie

i think that most well loved merckx frames by this age are looking a bit ragged and mine's no exception! will respray it one day and then again maybe not - it's like me with life written all over it's face!!



:facepalm:

 

[Jamiedyer]

No! Mines not ragged its just got character chips

Jamie

 

[rusty bodie]

No! Mines not ragged its just got character chips

Jamie

aye, just like yer coopin'!!

:?