- News
- Reviews
- Bikes
- Accessories
- Accessories - misc
- Computer mounts
- Bags
- Bar ends
- Bike bags & cases
- Bottle cages
- Bottles
- Cameras
- Car racks
- Child seats
- Computers
- Glasses
- GPS units
- Helmets
- Lights - front
- Lights - rear
- Lights - sets
- Locks
- Mirrors
- Mudguards
- Racks
- Pumps & CO2 inflators
- Puncture kits
- Reflectives
- Smart watches
- Stands and racks
- Trailers
- Clothing
- Components
- Bar tape & grips
- Bottom brackets
- Brake & gear cables
- Brake & STI levers
- Brake pads & spares
- Brakes
- Cassettes & freewheels
- Chains
- Chainsets & chainrings
- Derailleurs - front
- Derailleurs - rear
- Forks
- Gear levers & shifters
- Groupsets
- Handlebars & extensions
- Headsets
- Hubs
- Inner tubes
- Pedals
- Quick releases & skewers
- Saddles
- Seatposts
- Stems
- Wheels
- Tyres
- Health, fitness and nutrition
- Tools and workshop
- Miscellaneous
- Cross country mountain bikes
- Tubeless valves
- Buyers Guides
- Features
- Forum
- Recommends
- Podcast
forum
correct fitting of a chainset
please can you help in advising me on how to correctly fit an ultegra triple chainset and hollowtech bb to my bike. i beleive that a triple needs a spacer fitting between crankarm and bb , i have 2 of what look like spacers one is larger and thinner in diamiter than the other can anyone help me with an explanation of which one goes where thank you
If you're new please join in and if you have questions pop them below and the forum regulars will answer as best we can.
Latest Forum Topics
Latest Comments
- ymm 28 min 21 sec ago
The loud and shouty motorists groups, such as this one that Moody represents, don't represent the views of all road users and their bluster and...
- GMBasix 30 min 23 sec ago
So, did Chris Froom hit the optical illusion and come off his bike?
- brooksby 32 min 8 sec ago
An elderly woman collapsed crossing the road outside our house during the day a few weeks ago....
- Paul J 36 min 23 sec ago
Their bodies still either produced AND responded to testosterone; OR their bodies did not. They end up either with the male or female phenotypes ...
- wtjs 38 min 17 sec ago
As you say, optimised for ease of manufacture, assembly and disassembly- just imagine what fun you could have with hookless rims on this hub.
- Sredlums 39 min 30 sec ago
All extreme aero bikes are ugly, so you can't really hold that against this one specifically. Also, those ridiculously high stacked aero extensions...
- Hirsute 1 hour 8 min ago
I think the driver would have accelerated more with the same result.
- JeremyD 1 hour 17 min ago
Unrelated, what are those leg warmers? Are these white panels reflective? I've been looking for a way to boost my visibility for my morning commute...
- levestane 1 hour 45 min ago
I wonder what the same view will look like in 2035?
- David9694 1 hour 47 min ago
Person trapped after car crashes into wall...
Add new comment
5 comments
perfect thanks keef66 that is exactly what i wanted to know tahnks again
thank you both for the sound and succsefull advise
The fatter, cylindrical plastic spacer goes on behind the chainrings, then fit the axle through the BB cups, and put on the flatter, chamfered spacer before fitting the NDS crank
I'm assuming you haven't got the instructions, since Shimano ones tend to be pretty good. You can find them on techdocs.shimano.com. If that doesn't help try the Park Tools website. They tend to have lots of guides, and may well cover your specific question.
BB fitting : Lightly grease threads with copper grease or teflon grease and check the length (drive side to non-drive side) of your BB shell. If it's 68mm, you'll need a BB spacer on each side, if it's 73mm, you'll need no spacers. Tighten to recommended torque settings.
Crank fitting : Lightly grease contact points where the crank spindle will sit on the bearings and slide in through the drive side. Get the groove on the left hand crank to match the groove on the splines on the spindle and tighten the little plastic nut hand tight. Now tighten both pinch bolts to recommended torque settings. Check cranks for side to side play in the spindle and job done..