What is this voodoo - weird middleburn lock ring

[ishaw]

All the middleburn cranks I've had, and I still have a few, have a lock ring which takes a tool that fits around the outside of the lock ring. A recent acquisition has a lock ring with Judy 2 pins to remove it.

I'm guessing this isn't standard, right?

I'm wondering how on earth I'm going to get this undone, assume a circlip ier won't have the strength in the pins for the usual force required to get the lock ring off?

 

[Frankenorange]

Adjustable pin wrench required, or a fixed wrench if the holes are at some kind of standard width.

 

[LeeDevelopment]

Ah, we used a tap or small phillips screwdriver banged with a Hammer BITD! In fact I had to do this just the other day with a stuck outer part of a crank extractor bolt.

 

[danson67]

One of these. Adjustable locking pin spanner:


I have one, coming for a different workshop job, which you can borrow.

All the best,

 

[ishaw]

One of these. Adjustable locking pin spanner:
View attachment 986768

I have one, coming for a different workshop job, which you can borrow.

All the best,

I had one of those, bought in error years ago but can't find it for love nor money. I can confirm my circlip pliers don't have the reach and I suspect strength to budge it.

 

[danson67]

They're certainly burly.



All the best,

 

[bikeworkshop]

Warming it all up should reduce the force required.
And if you're thinking of replacing it with the hollowtec bb style tool fitting lockring, it doesn't matter if you crack it to get it off