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 Post subject: Re:
PostPosted: Fri Feb 01, 2019 12:49 pm 
Gold Trader
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Yes, you just have an extra click that you don't use


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PostPosted: Fri Feb 01, 2019 2:09 pm 
King of the Skip Monkeys
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Joined: Wed Nov 07, 2007 4:34 pm
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Location: Futtockcestershire
cycletothesea wrote:
I have a lovely Pinarello with a 7400 dura ace groupset, however the shifters recently gave up working properly. Rather than buying some more expensive Dura Ace downtube shifters, I tried to fit some more modern SL-R400 shimano 8 speed shifters. Trouble is, I can't get them to index properly with the old Dura Ace derailleur. Should this be a problem? Are they likely to be incompatible?



I've been having a thunk on this, why dont you go mad and fit a 10spd cassette/ chain and fit 10spd shifters? I've been doing this myself and wanging on to whomever would listen

Heres an old mountain Deore MT-60 rear mech via some Dura-Ace 10spd shifter. It indexes nicely and certainly chains wont brake the bank

Image

cheapish bits

https://www.ebay.co.uk/itm/Shimano-Dura ... rk:25:pf:0

https://www.ebay.co.uk/itm/M-Wave-10-Sp ... k:156:pf:0

https://www.ebay.co.uk/itm/BBB-Drivetra ... rk:38:pf:0


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PostPosted: Fri Feb 01, 2019 2:17 pm 
Retro Guru
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Joined: Tue Jan 28, 2014 4:05 pm
Posts: 446
Location: London
legrandefromage wrote:
cycletothesea wrote:
I have a lovely Pinarello with a 7400 dura ace groupset, however the shifters recently gave up working properly. Rather than buying some more expensive Dura Ace downtube shifters, I tried to fit some more modern SL-R400 shimano 8 speed shifters. Trouble is, I can't get them to index properly with the old Dura Ace derailleur. Should this be a problem? Are they likely to be incompatible?

I've been having a thunk on this, why dont you go mad and fit a 10spd cassette/ chain and fit 10spd shifters? I've been doing this myself and wanging on to whomever would listen
Heres an old mountain Deore MT-60 rear mech via some Dura-Ace 10spd shifter. It indexes nicely and certainly chains wont brake the bank
Image
cheapish bits
https://www.ebay.co.uk/itm/Shimano-Dura ... rk:25:pf:0
https://www.ebay.co.uk/itm/M-Wave-10-Sp ... k:156:pf:0
https://www.ebay.co.uk/itm/BBB-Drivetra ... rk:38:pf:0


Well, it's an option, haven't decided yet though, always room for an upgrade. But it's my first bike build from about 6 years ago, so I'd like to try and keep it as near as possible to what it was.


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PostPosted: Fri Feb 01, 2019 2:59 pm 
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Joined: Tue Jan 28, 2014 4:05 pm
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Location: London
Okay, well I have all sorts of options now. Either new 9 speed shifters OR fit 8-speed Claris derailleur and take the opportunity to put a bigger range cassette on, might help me ride it a lot more. Be shame to remove all of the Dura Ace stuff just because I can't find an 8 speed DA shifter set though - so that makes just switching to friction shifting the best thing. Oh - I don't know. Original build thread here:

viewtopic.php?f=23&t=289336&hilit=Pinarello


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PostPosted: Fri Feb 01, 2019 5:23 pm 
Old School Grand Master

Joined: Tue Oct 09, 2007 1:55 pm
Posts: 9488
Location: New Forest, UK
The other question I have is what's wrong with the old shifters? Can they be fixed?
I've a set of thumbies I've used for 29 years, the things are bombproof! The indexing works the same in all types: on a small ball bearing engaging into a dimple, secured by a sprung washer.


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 Post subject: Re:
PostPosted: Tue Feb 05, 2019 5:51 pm 
Retro Guru

Joined: Tue Jun 03, 2008 4:31 pm
Posts: 805
My 9 speed levers most certainly didn't work with 8 speed Dura Ace. Shame as it would have made a nice set up on my TT bike.


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 Post subject: Re:
PostPosted: Tue Feb 05, 2019 9:16 pm 
rBoTM Winner
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Location: N.Staffs
I’ve got a spare pair of SL7402 DT 8 speed £20 + post?


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 Post subject: Re: Re:
PostPosted: Tue Feb 05, 2019 9:30 pm 
Retro Guru
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JSH wrote:
I’ve got a spare pair of SL7402 DT 8 speed £20 + post?


Sent PM


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PostPosted: Tue Feb 05, 2019 11:15 pm 
rBoTM Winner
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Location: N.Staffs
Replied


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PostPosted: Thu Feb 07, 2019 12:20 pm 
Dirt Disciple

Joined: Mon Aug 18, 2014 11:04 am
Posts: 80
Location: Southeast Ireland
I use modern Sora 8 speed brifters with a rear 7402 mech on my old Corsa Extra and indexing is perfect.


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