Removing the back half of a stuck chainring bolt

There's a thread for this, but not very helpful and no real solutions other than HTFU and drilling, so here's a solution for when the rear half of the bolt is stuck in and you can't get it out.

Note: this assumes you can undo the allen bolt without any major issues.

Step 1: Locate the bolt

Step 2: Position 2-tooth tool on reverse

Step 3: Remove bolt as normal

Step 4: Here's the problem, the rear side is stuck!

Step 5: Gently spread the ring from the spider

Step 6: Position 2-tooth tool in between the spider and the ring

Step 7: If the ring doesn't push out the bolt by itself, cover it and give it a gentle tap.

Step 8: If it's still stuck, start microsurgery, just a gentle poke with a small screwdriver will suffice...

All done!

Jesus wept.

we need a repository for threads like this, the tyre lever review and any started by me

if those are 75's.
the rear bolt is fixed into da crank arms.
it is not supposed to come out.
which is why the rear bolts are recessed

like so

http://www.tracksupermarket.com/blog/wp-content/uploads/2010/11/s75cranks_l.jpg

^ it's not fixed, they are aftermarket bolts...

ok whatever, thought it was a good tip, like the one about ironing brooks tape,

nevermind..

not supposed to be.
oh well!

:)

not supposed to be.
oh well!

adoubletap installed them.

Ison stainless singles

http://www.ison-distribution.com/english/product.php?part=CRIDBDSS

ADT, probably only intalled the outer ones

As dubtap pointed out anodised sets seem to have no bolts installed on them but NJS silver versions do seem to have the back bolts installed.

http://store.fixie-factory.com/1315-large/sugino-sg-75-njs-black.jpg

http://i.imgur.com/u7lVZ.jpg

http://store.fixie-factory.com/1312-thickbox/sugino-sg75-njs-cranks.jpg

http://i.imgur.com/ucMJS.jpg

cough

maybe it's just the older one had.

the blue and red are photoshopped anyways :)

regardless, if they are stuck, they are probably not meant to come out.... :P

Unless they're hit really hard with a hammer.

^not correct in this case...

2 fell out with zero effort, just undid the allen bolt.
1 needed the gentlest of taps
2 are firmly stuck together.

@fruitcake, i would have saved 18 posts and 16 pictures :)

I personally cannot believe Murtle isn't endorsing hammer action with aplomb.

has this been removed yet?

Should one of my bikes get dirty, I throw it from the window and buy another.

^^lol no.

Should I drill it out?

Not what I expected to have to go about doing before even owning them for 24 hours.

the two sides are rotating freely but firmly bolted together and I can't get purchase on the reverse because the bolt sticks out too far.

Should one of my bike's get dirty, I throw it from the window and buy another.

what floor?

also, quoted for apostrophe humiliation

My too late apostrophe edit has not saved me from humiliation.