Octalink Groupset Upgrade

Discuss light weight issues concerning road bikes & parts.
Lewski33
Posts: 20
Joined: Thu Oct 08, 2015 10:48 am

by Lewski33

Evening all!
So i have an old Trek Madone with a Shimano Ultegra 'octalink' crank. I dont think I can afford to buy a new bike but I am looking to upgrade some part on my bike to save weight and in the case of the groupset, upgrade and get something running a bit smoother. I understand that I will have to change shifters, derailleurs etc but could I possibly upgrade to a Dura Ace 11 speed groupset (if that is compatible with an octalink crank/bottom bracket?) Or is there an adapter for this?
Any help would be greatly appreciated.

Cheers,

Lewis

P.S. I've attached what the crank and BB look like. Hope it helps.
Attachments
Shimano Octalink.jpeg

Kurets
Posts: 140
Joined: Thu Feb 25, 2016 9:55 pm

by Kurets

You replace the octalink BB with a hollowtech2 BB if you wamt to run more modern cranks.the tool for removing the BB is the same as for square taper BBs, no need for a special "octalink only" tool. The exception to that is that the regular square taper crank removal tools are not compatible with octalink.

Lewski33
Posts: 20
Joined: Thu Oct 08, 2015 10:48 am

by Lewski33

Thanks Kurets!
Is it really that easy? I understand that I will have check diameter etc maybe a trip to the LBS would be a good shout. Just hope my grasp of the French language is better than my understanding of cranks and bottom brackets!

mattr
Posts: 3499
Joined: Fri May 25, 2007 6:43 pm
Location: The Grim North.

by mattr

TBH, a madone is a recent frame, a "standard" shimano groupset from any of the box shifting warehouses will almost certainly fit with virtually no issues or "specials".

Only thing to bear in mind is that your 9 speed era hub won't take an 11 speed cassette *unless* it's a mavic wheel.

Lewski33
Posts: 20
Joined: Thu Oct 08, 2015 10:48 am

by Lewski33

mattr wrote:TBH, a madone is a recent frame, a "standard" shimano groupset from any of the box shifting warehouses will almost certainly fit with virtually no issues or "specials".

Only thing to bear in mind is that your 9 speed era hub won't take an 11 speed cassette *unless* it's a mavic wheel.


Thanks a lot! I have been looking at getting a Chris King 24" threaded bottom bracket and maybe going from there.....Maybe I am being too hopeful? Didn't really think about the rear hub either, so im guessing that would mean a new wheelset or can I (meaning LBS) just buy a new rear hub that accommodates an 11 speed and replace it with the old hub?

Again, thanks for you time!

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bikerjulio
Posts: 1901
Joined: Fri Dec 11, 2009 10:38 pm
Location: Welland, Ontario

by bikerjulio

I question the wisdom of going to the expense of converting the bike to 11-speed.

If the wheels and hubs are in good condition you could consider a switch to a 10-speed group.

Tiagra 4700 gets good reviews and will update and refresh the bike for a very reasonable price. While doing this you will have a wide range of crankset and cassette options to choose from that will fit your current frame and wheels.

http://www.ribblecycles.co.uk/shimano-tiagra-4700-10-speed-double-groupset/

Image
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One.

So let's just say I'm drivin' this buggy...
and if you fix your attitude you can ride along with me.

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TheKaiser
Posts: 494
Joined: Thu Sep 05, 2013 3:29 pm

by TheKaiser

bikerjulio wrote:I question the wisdom of going to the expense of converting the bike to 11-speed.

If the wheels and hubs are in good condition you could consider a switch to a 10-speed group.

Tiagra 4700 gets good reviews and will update and refresh the bike for a very reasonable price. While doing this you will have a wide range of crankset and cassette options to choose from that will fit your current frame and wheels.


I second this suggestion, or if you have some attachment to keeping the Ultegra or Dura-ace level names on your bike, then cruise ebay for NOS (New Old Stock) 9 or 10spd parts at those levels.

The actual weight savings that you will achieve by upgrading to more modern equivalents of what you have are minimal. If your goal is weight savings at a reasonable price, you will likely save more grams per dollar by upgrading your seatpost, stem, handlebar, etc...and while you are at it you would have the opportunity to dial in your position and try some of the newer handlebar bends if you are so inclined. Plus fresh bar tape of course.

If your goal is to "freshen" up the feel of your bike, newer generation parts won't help so much as just new unworn parts. Many people would argue that shimano shifting reached it's zenith with your generation of parts and that they have gone downhill since the introduction of the internal aero shifter cable routing that goes through the hood, rather than exiting right out the inside edge of the levers. Similarly, 11spd is more finicky and less tolerant of cable misadjustment or hanger misalignment than 9 or 10spd. If your parts don't have a lot of miles, it is probable that you could achieve fresh performance with just a new set of cables. If your bike has 1000s of miles on it, and the chain is sloppy and cassette worn, then add them on to the list too, along with a new small chainring. Unless you have already blown through many chains and cassettes in sloppy conditions, then I would doubt that your shifters or derailleurs have an significant wear, at least beyond what some spray lube would remedy.

But that is just my take on things. I know a lot of people like buying stuff, and are searching for ways to justify it, but since you mentioned budgetary concerns it seemed prudent to offer some alternative perspectives.

Lewski33
Posts: 20
Joined: Thu Oct 08, 2015 10:48 am

by Lewski33

Thanks for all your time and responses!
So, the upgrade isn't necessarily for 11 speed, 10 speed would suffice but a newer groupset tend to start with 10 speed so I am ok with that. Now I understand that Shimano still make 9 speed and yes, any excuse to buy something new and possibly upgrade the bike at the same time. I've gone down the road of new wheels (just some shimano 105's), new cassette, cables, bar tape, new Fizik carbon seat etc but the bike has done 1000's of miles since 2003 and living in the Alps, I am finding it hard sometimes pushing a 53/39 crank! (or so my legs and head tell me!) The crank, derailleur, shifters are quite beaten up as you can imaging over the years. New seat post, stem and handlebars are on the shopping list also :)
Lets start with this new BB and go from there. Again, thanks for your help, suggestions and time. It really is a great forum for advice and tips!

vejnemojnen
Posts: 343
Joined: Fri Nov 08, 2013 7:11 pm

by vejnemojnen

from my experience, 9spd octalink era was a dark age for shimano.

the 65-55 series ultegra-105 shifters were prone to failure, the derailleurs developed significant lateral wobble and weakened springs in short time, and the longevity of oktalink bb-s are notoriously short.

it's just my observation, though. 9spd okta-era sh stuff should be avoided.

I'd buy a whole new 47..tiagra gruppo, with 13-25 ultegra 10spd cassette and compact chainset if I were you. :thumbup:

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bikerjulio
Posts: 1901
Joined: Fri Dec 11, 2009 10:38 pm
Location: Welland, Ontario

by bikerjulio

Thanks a lot! I have been looking at getting a Chris King 24" threaded bottom bracket and maybe going from there.


Lets start with this new BB and go from there.


The CK BB is for a different crank than the one you have. It's for a modern Shimano crank.

By the time you have paid for a CK BB (169 euro) and new crank (Tiagra 77 euro) you are 2/3 the way to the complete Tiagra group (389 euro).

The new group would immediately replace all your worn components and allow much better gearing choices for the mountains.

https://www.bike-components.de/en/Shimano/Tiagra-4700-Gruppe-2x10-34-50-p53758/
There's sometimes a buggy.
How many drivers does a buggy have?

One.

So let's just say I'm drivin' this buggy...
and if you fix your attitude you can ride along with me.

http://www.youtube.com/watch?v=GekiIMh4ZkM

jwj410
Posts: 7
Joined: Sat Mar 11, 2017 12:26 am

by jwj410

Easiest to just do hollowtech bottom bracket conversion and toss the octalink bb. 11spd you would have to have a new wheelset or upgradable freehub. Should be no problem if you do a 10 speed conversion as the hub is the same size as for 8-9spd. Seeing modern groupsets on an almost "vintage" frameset is pretty cool IMHO


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Lewski33
Posts: 20
Joined: Thu Oct 08, 2015 10:48 am

by Lewski33

jwj410 wrote:Easiest to just do hollowtech bottom bracket conversion and toss the octalink bb. 11spd you would have to have a new wheelset or upgradable freehub. Should be no problem if you do a 10 speed conversion as the hub is the same size as for 8-9spd. Seeing modern groupsets on an almost "vintage" frameset is pretty cool IMHO


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That's kind of what i am going for. No real money to play with regarding a new fancy carbon bike etc so im just going to give this bike some new components and parts as I love to ride it. Plus, by buying the parts bit by bit I can spread the cost.....That's what Ill tell the wife if she finds out!

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kdawg
Posts: 88
Joined: Wed Nov 20, 2013 9:10 pm

by kdawg

I’d agree with the Tiagra suggestions. My winter bike has old 105 and my new cross bike has new Tiagra - and it’s an improvement. Cosmetically it’s really close to new Ultegra on my best bike too.

That would be an easy swap too - although 2 things.

1. The cable pull is different from other 10 speed so you need to do the shifters and RD at the same time - you can’t just upgrade parts. Obviously you could do the chainset on its own.

2. It’s worth having the BB shell faced. Your current BB sits inside the she’ll but a hollow tech one butts up to the edge. I went through a few hollow tech BBs before getting that done - and since then I’m still on the same one. Seems to help bearing life by lining everything up.
I'm left handed, if that matters.

Svetty
Posts: 492
Joined: Thu Mar 26, 2009 11:06 pm
Location: Yorkshire - God's Own Country

by Svetty

You could get Ultegra R8000 and then fit the corresponding 11 -34 cassette to your existing freehub.......

AJS914
Posts: 2000
Joined: Tue Jan 28, 2014 6:52 pm

by AJS914

Bah-humbug on 10 speed.

I say go for all new 11 speed with Dura Ace or Ultegra or the highest level you can afford. It's really nice to get an all new groupset. And get a compact setup to save your legs in the Alps. Get new wheels too. It will be like a new bike and something you are only doing every 10-15 years anyway. I say do it right the first time.

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