Hollowtech-2 Crankset Axle Length
#1
Thread Starter
Member
Joined: Dec 2005
Posts: 43
Likes: 0
From: SF Bay Area
Bikes: Vintage Fuji Del Rey, Torelli Countach, Mondonico Diamond, All-City Mr. Pink, Mikkelsen Custom Road Bike, Surly Ogre, Dahon Helios, Marin Muirwoods
Hollowtech-2 Crankset Axle Length
I am trying to install the Shimano Alfine crankset into my Soma Juice 29er. As you can see from the pic, the crank's axle length (68mm) is too short. The bb shell width of the frame is 73mm, and this is a Shimano HT-2 crankset. Maybe I need a different crankset, but I am thinking this crankset/frame combination might work because I've seen pics of the crank installed in this frame. I'll attach pics for reference. Please let me know if I am explaining this clearly, and thanks for helping.
#3
Senior Member
Joined: Jun 2007
Posts: 12,257
Likes: 5
From: A Coffin Called Earth. or Toronto, ON
Bikes: Bianchi, Miyata, Dahon, Rossin
is there an off chance that the crankset is a special order for 73mm shells?
__________________
Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
https://sanfrancisco.ibtimes.com/arti...ger-photos.htm
Food for thought: if you aren't dead by 2050, you and your entire family will be within a few years from starvation. Now that is a cruel gift to leave for your offspring. ;)
https://sanfrancisco.ibtimes.com/arti...ger-photos.htm
#4
Thread Starter
Member
Joined: Dec 2005
Posts: 43
Likes: 0
From: SF Bay Area
Bikes: Vintage Fuji Del Rey, Torelli Countach, Mondonico Diamond, All-City Mr. Pink, Mikkelsen Custom Road Bike, Surly Ogre, Dahon Helios, Marin Muirwoods
I can't tell from the picture, but do you have shims installed between the BB shell and the BB Cup? If so, remove those.

#5
Thread Starter
Member
Joined: Dec 2005
Posts: 43
Likes: 0
From: SF Bay Area
Bikes: Vintage Fuji Del Rey, Torelli Countach, Mondonico Diamond, All-City Mr. Pink, Mikkelsen Custom Road Bike, Surly Ogre, Dahon Helios, Marin Muirwoods
is there an off chance that the crankset is a special order for 73mm shells?
#7
Banned
Joined: Jun 2010
Posts: 43,586
Likes: 1,380
From: NW,Oregon Coast
Bikes: 8
OTOH, You might just get the MTB crankset for the 73 wide BB shell,
then set it up as a single speed ,
by buying a different set of chainring, and a chainguard ..
given the BB axle is part of the right crank arm these days, on the latest designs..
then set it up as a single speed ,
by buying a different set of chainring, and a chainguard ..
given the BB axle is part of the right crank arm these days, on the latest designs..
#8
Senior Member
Joined: Jun 2011
Posts: 100
Likes: 0
From: Durham, NC
Bikes: All-City Mr. Pink, Kona Jake CX, Niner ROS9
#10
Thread Starter
Member
Joined: Dec 2005
Posts: 43
Likes: 0
From: SF Bay Area
Bikes: Vintage Fuji Del Rey, Torelli Countach, Mondonico Diamond, All-City Mr. Pink, Mikkelsen Custom Road Bike, Surly Ogre, Dahon Helios, Marin Muirwoods
OTOH, You might just get the MTB crankset for the 73 wide BB shell,
then set it up as a single speed ,
by buying a different set of chainring, and a chainguard ..
given the BB axle is part of the right crank arm these days, on the latest designs..
then set it up as a single speed ,
by buying a different set of chainring, and a chainguard ..
given the BB axle is part of the right crank arm these days, on the latest designs..
#11
Junior Member
Joined: Jan 2009
Posts: 113
Likes: 1
From: Finland
There are two different type Alfine crankset.
Single and double chain guard type. Double chain guard type has 9.5mm longer axle.
If you remove inner chainguard and 1 spacer it fits 73mm shell.
https://techdocs.shimano.com/media/te...9830637968.pdf
Single and double chain guard type. Double chain guard type has 9.5mm longer axle.
If you remove inner chainguard and 1 spacer it fits 73mm shell.
https://techdocs.shimano.com/media/te...9830637968.pdf
#12
Thread Starter
Member
Joined: Dec 2005
Posts: 43
Likes: 0
From: SF Bay Area
Bikes: Vintage Fuji Del Rey, Torelli Countach, Mondonico Diamond, All-City Mr. Pink, Mikkelsen Custom Road Bike, Surly Ogre, Dahon Helios, Marin Muirwoods
There are two different type Alfine crankset.
Single and double chain guard type. Double chain guard type has 9.5mm longer axle.
If you remove inner chainguard and 1 spacer it fits 73mm shell.
Single and double chain guard type. Double chain guard type has 9.5mm longer axle.
If you remove inner chainguard and 1 spacer it fits 73mm shell.
Thread
Thread Starter
Forum
Replies
Last Post
Plainsman
Bicycle Mechanics
27
08-10-19 08:06 PM






