"Flower" shaped headset locknuts?
04-06-11 | 10:56 AM
#1
Thread Starter
Senior Member
Joined: Jun 2008
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From: Snohomish, WA
Bikes: Ridley Fenix Disc '15, Centurion Ironman '86, Raleigh Team '90, Bianchi Nyala '93
"Flower" shaped headset locknuts?
Do I need a special tool?
Instead of standard, flat-sided hexagonal locknuts, the headset on my '86 Centurion Ironman has nuts with concave sides and rounded corners. Reminds me of a flower.
Do I need a special tool for this headset, and if so, where do I find it?
TIA.
Instead of standard, flat-sided hexagonal locknuts, the headset on my '86 Centurion Ironman has nuts with concave sides and rounded corners. Reminds me of a flower.
Do I need a special tool for this headset, and if so, where do I find it?
TIA.
04-06-11 | 11:06 AM
#2
Dolce far niente
Joined: Dec 2004
Posts: 10,710
Likes: 33
From: Southwest Idaho
Sounds like the Shimano 600 headset lock-nut. Yeah - there's a special tool for it. the one and only time I ever fooled with one, I had success with a thickly folded rag and channel-lock pliers. I wouldn't recommend that method, though..... 
Looks like this?
Yes? Then you need this:
Find it, here:
https://cgi.ebay.com/Wrenches-for-Shi...08423637489251
Looks like this?
Yes? Then you need this:
Find it, here:
https://cgi.ebay.com/Wrenches-for-Shi...08423637489251
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Last edited by bigbossman; 04-06-11 at 11:12 AM.
04-06-11 | 11:07 AM
#3
Bianchi Goddess
Joined: Apr 2009
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From: Shady Pines Retirement Fort Wayne, In
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yes you do. I believe that is a 600 EX or a copy cat. try you lbs maybe they will loan you theirs or perhaps someone here will.
I am not sure if a standard 31,32, 32 wrench will work. if you just want to take it off channellocks will certainly do the job
https://cgi.ebay.com/Wrenches-Shimano...item41584dcd0f
I am not sure if a standard 31,32, 32 wrench will work. if you just want to take it off channellocks will certainly do the job
https://cgi.ebay.com/Wrenches-Shimano...item41584dcd0f
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
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04-06-11 | 11:37 AM
#6
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From: Portsmouth, NH
04-06-11 | 12:32 PM
#8
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Bikes: 1986 Alan Record Carbonio, 1985 Vitus Plus Carbone 7, 1984 Peugeot PSV, 1972 Line Seeker, 1986(est.) Medici Aerodynamic (Project), 1985(est.) Peugeot PY10FC
Ran into something similar last month when I recieved the JPR headset pictured from a seller in France.
I actually got the special wrench pictured in the mail before I recieved the headset. The seller was really nice enough to send it after he realized that he forgot to include in in the box with the headset, I was not expecting the wrench as most people lose these things, so I was planning on using a small strap wrench with a reinforced rubber strap to install it, which I think would work with most other headsets if you lose their proprietary wrenches.
Surprised Shimano did this too, I thought only the French would require special wrenches for their components.
Chombi
I actually got the special wrench pictured in the mail before I recieved the headset. The seller was really nice enough to send it after he realized that he forgot to include in in the box with the headset, I was not expecting the wrench as most people lose these things, so I was planning on using a small strap wrench with a reinforced rubber strap to install it, which I think would work with most other headsets if you lose their proprietary wrenches.
Surprised Shimano did this too, I thought only the French would require special wrenches for their components.
Chombi
04-06-11 | 02:26 PM
#9
Cat 6
Joined: Dec 2007
Posts: 7,522
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From: Mountain Brook, AL
The regular thin 32mm wrench on the adjustable cup, paired with a nice thick adjustable wrench for the top nut helps keep everything from slipping.
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72 Frejus (for sale), Holdsworth Record (for sale), special CNC & Gitane Interclub / 74 Italvega NR (for sale) / c80 French / 82 Raleigh Intl MkII f&f (for sale)/ 83 Trek 620 (for sale)/ 84 Bruce Gordon Chinook (for sale)/ 85 Ron Cooper / 87 Centurion IM MV (for sale) / 03 Casati Dardo / 08 BF IRO / 09 Dogma FPX / 09 Giant TCX0 / 10 Vassago Fisticuff
