hollowtech fixing bolts with hex heads?
#1
ec velo
Thread Starter
Join Date: Jul 2004
Location: eau claire, wi
Posts: 179
Bikes: XC: PUSS; Winter Beater: GT avalanche SS; Jump: Transition Trail or Park; Fixie: Steamroller
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
hollowtech fixing bolts with hex heads?
Are there such things anywhere as hollowtech fixing bolts with hex heads instead of that stupid shimano star pattern?
#3
ec velo
Thread Starter
Join Date: Jul 2004
Location: eau claire, wi
Posts: 179
Bikes: XC: PUSS; Winter Beater: GT avalanche SS; Jump: Transition Trail or Park; Fixie: Steamroller
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
It would be useful to be able to preload one's bottom bracket with only a multi-tool.
#4
Senior Member
Join Date: Aug 2005
Location: Pittsburgh, PA
Posts: 33,656
Bikes: '96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '20 Surly Midnight Special, All are 3x10. It is hilly around here!
Mentioned: 39 Post(s)
Tagged: 0 Thread(s)
Quoted: 2026 Post(s)
Likes: 0
Liked 1,096 Times
in
742 Posts
Is that "star pattern" a standard Torx size? If so, any hardware. home center or auto parts store has the wrenches or bits.
#5
ec velo
Thread Starter
Join Date: Jul 2004
Location: eau claire, wi
Posts: 179
Bikes: XC: PUSS; Winter Beater: GT avalanche SS; Jump: Transition Trail or Park; Fixie: Steamroller
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Nope, the star pattern is not a standard torx size. It's a proprietary shimano thing. There are only two tools out there for it: Park BBT-9 and Park BBT-10.
#7
ec velo
Thread Starter
Join Date: Jul 2004
Location: eau claire, wi
Posts: 179
Bikes: XC: PUSS; Winter Beater: GT avalanche SS; Jump: Transition Trail or Park; Fixie: Steamroller
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
What 2 dollar shimano plastic one?
#9
SE Wis
Join Date: Apr 2005
Location: Milwaukee, WI
Posts: 10,517
Bikes: '68 Raleigh Sprite, '02 Raleigh C500, '84 Raleigh Gran Prix, '91 Trek 400, 2013 Novara Randonee, 1990 Trek 970
Mentioned: 40 Post(s)
Tagged: 0 Thread(s)
Quoted: 2747 Post(s)
Liked 3,401 Times
in
2,058 Posts
#10
Senior Member
Join Date: Dec 2009
Location: Melbourne, Oz
Posts: 9,547
Bikes: https://weightweenies.starbike.com/forum/viewtopic.php?f=10&t=152015&p=1404231
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 1529 Post(s)
Liked 718 Times
in
510 Posts
Looks like a smaller version of the spline shape hubs engage the cassette body with.
If it's not actually any smaller, I guess you could turn an old hub into a tool.
If it's not actually any smaller, I guess you could turn an old hub into a tool.
#11
Senior Member
#12
ec velo
Thread Starter
Join Date: Jul 2004
Location: eau claire, wi
Posts: 179
Bikes: XC: PUSS; Winter Beater: GT avalanche SS; Jump: Transition Trail or Park; Fixie: Steamroller
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
Yeah, I see you can get cheap small tools. I just think it's lame shimano had to not use a standard hex key hole.
#13
Senior Member
Join Date: Dec 2009
Location: Melbourne, Oz
Posts: 9,547
Bikes: https://weightweenies.starbike.com/forum/viewtopic.php?f=10&t=152015&p=1404231
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 1529 Post(s)
Liked 718 Times
in
510 Posts
What would it be, 12mm? Not exactly common anyway.
#14
Senior Member
Join Date: May 2010
Posts: 69
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times
in
0 Posts
FSA's crank-bolts have a hex head, although I don't know if the threads are the same. But with a hex key it's extremely easy to apply far too much torque, overloading the bearings.
I imagine Shimano designed the strange bolt to oblige you to use their strange tool. And the strange tool (the official one, at least) is clearly designed to limit the amount of torque that can be applied.
I imagine Shimano designed the strange bolt to oblige you to use their strange tool. And the strange tool (the official one, at least) is clearly designed to limit the amount of torque that can be applied.
#15
Senior Member
Join Date: Jul 2005
Location: Boulder County, CO
Posts: 4,398
Bikes: '80 Masi Gran Criterium, '12 Trek Madone, early '60s Frejus track
Mentioned: 6 Post(s)
Tagged: 0 Thread(s)
Quoted: 514 Post(s)
Liked 451 Times
in
339 Posts
It's not lame, it's insurance against over-tightening the crank bolt and crushing your bearings. Ever see what happens to an FSA bottom bracket after over-tightening and a hundred miles? Nasty.
#16
Senior Member
Join Date: Dec 2009
Location: Melbourne, Oz
Posts: 9,547
Bikes: https://weightweenies.starbike.com/forum/viewtopic.php?f=10&t=152015&p=1404231
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
Quoted: 1529 Post(s)
Liked 718 Times
in
510 Posts
Heh, a 12mm allen fitting kinda encourages a hefty cranking