Help with two-pronged Campy crank washer-thing - London Fixed-gear and Single-speed

addie · 6th August 2008

Forgive the really shitty phone-pic, but can someone please tell me what tool I need to remove the outer washer-thing on these cranks? It's got two, very tiny holes on opposite sides of each other.

They're not something I've personally ever seen/used before, but regardless are stopping me from just unbolting the crank-bolt with a standard allen…

Jimmying it with some steel cocktail sticks just now didn't work, and I didn't want to force the issue. Any ideas?

Oh, and thank you!
:)

deadly fanny pack · 6th August 2008

is this mystery washer thing inside the crankbolt hold in the crankarm, or are you referring to the bottom bracket cup?

If its just a cranks dust cap, just yank it out with anything, if its metal you may want to screw it out though.

If its a bottom bracket cup, you need a 2 pin BB tool.

addie · 6th August 2008

Oops. This might help:

So it's flush with the crankbolt, within the recess in the actual crank… But it appears to want to rotate clockwise (i.e. in the opposite direction to the crankbolt) to loosen.

dogsballs · 6th August 2008

aren't they just self extractor crank bolts?!?

andyp · 6th August 2008

Quote:

Originally Posted by dogsballs

aren't they just self extractor crank bolts?!?

Yes. You can get a special tool to remove them but a screwdriver or pair of narrow nosed pliers will do the job equally as well.

To remove it you need to turn the outside bolt anti-clockwise until it pops out, then remove the bolt as per usual.

kowalski · 6th August 2008

addie · 6th August 2008

… or is it the "one-key" system that I read about on the Park site, that shouldn't (or can't, not sure) be removed? I'm confused. By a friggin' bolt. :(

andyp · 6th August 2008

You need one of these;

http://www.parktool.com/products/det...6&item=SPA%2D2

addie · 6th August 2008

Quote:

Originally Posted by andyp

To remove it you need to turn the outside bolt anti-clockwise until it pops out, then remove the bolt as per usual.

But the outer bolt wants to turn in the opposite direction to the inner crank bolt. So surely it should unscrew clockwise? Except that both sounds shift about a 1/4 turn before sticking. And then the actual crank bolt, now loosened, turn till it meets the outer bolt and then I'm back to where I'm started… :(

Will pick up some needle nose pliers from town when I'm at work today and give it a try though. Thanks all.

Any more advice?

addie · 6th August 2008

Quote:

Originally Posted by andyp

You need one of these;
http://www.parktool.com/products/det...6&item=SPA%2D2

Sweet, thanks! definitely red?

andyp · 6th August 2008

Remove the outer cap completely before you loosen the crank bolt. It might stick a bit but brute force will triumph in the end. I've got these on my Stronglight cranks and once you know what you're doing it's a walk in the park.

addie · 6th August 2008

Gotcha. Thank all. Will let you know if (and most likely when) this works tonight.
Have a great day.

kowalski · 6th August 2008

Have a look at this.

http://www.sandsmachine.com/ac_bolt.htm

Suspect you need to HTFU!

Unless the inner bolt is damaged, its pushing against the outer cap that pulls the crank arm off.

Logic would dictate the outer cap would undo clockwise, but the threads on the crank arm are designed for dustcaps or extractor tools that tighten in the normal manner.

dogsballs · 6th August 2008

self extracting crank bolts, you just use the allen key in the middle and as u undo the bolt, the specail adaptor pushes against the face popping the cranks off ie no need for crank puller.

addie · 6th August 2008

Right, so no pin spanner malarky. Just a dose of HTFU and a bit of welly then.
Hmmm. Conflicting advice, but Dale & Kowalski are usually right on these things.
If in doubt, hit it harder, eh?

dogsballs · 6th August 2008

the pressure you are experiencing, i think, is the self extractor try to push the crank of. shouldn't need too much force though.

addie · 6th August 2008

Indeed, welly did the job: self-extractor it was.
Muchos gracias to all and sundry.

If in doubt, HTFU.

I should totally get that tattooed…

andyp · 6th August 2008

Glad you got it sorted addie. Lame-ish advice from me. Fail.

6th August 2008	#1
addie	Help with two-pronged Campy crank washer-thing Forgive the really shitty phone-pic, but can someone please tell me what tool I need to remove the outer washer-thing on these cranks? It's got two, very tiny holes on opposite sides of each other. They're not something I've personally ever seen/used before, but regardless are stopping me from just unbolting the crank-bolt with a standard allen… Jimmying it with some steel cocktail sticks just now didn't work, and I didn't want to force the issue. Any ideas? Oh, and thank you! :)
	quote reply

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6th August 2008	#2
deadly fanny pack	is this mystery washer thing inside the crankbolt hold in the crankarm, or are you referring to the bottom bracket cup? If its just a cranks dust cap, just yank it out with anything, if its metal you may want to screw it out though. If its a bottom bracket cup, you need a 2 pin BB tool.
	quote reply

6th August 2008	#3
addie	Oops. This might help: So it's flush with the crankbolt, within the recess in the actual crank… But it appears to want to rotate clockwise (i.e. in the opposite direction to the crankbolt) to loosen.
	quote reply

6th August 2008	#4
dogsballs	aren't they just self extractor crank bolts?!?
	quote reply

6th August 2008	#8
andyp	You need one of these; http://www.parktool.com/products/det...6&item=SPA%2D2
	quote reply

6th August 2008	#13
kowalski	Have a look at this. http://www.sandsmachine.com/ac_bolt.htm Suspect you need to HTFU! Unless the inner bolt is damaged, its pushing against the outer cap that pulls the crank arm off. Logic would dictate the outer cap would undo clockwise, but the threads on the crank arm are designed for dustcaps or extractor tools that tighten in the normal manner.
	quote reply

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