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the NDS sleeve is metal, but has a collar to stop it going to too far 🙁
Tried tightening that one just to get the thread moving? Doesn't look like it has a collar/lip.
I've used a 6ft scaffold bar over a breaker bar before. Careful it will let go with a crack.
As you have done, keep the wheels on to avoid frame damage and have someone hold the bike while you swing on the spanner with extension.
Be double sure the tool won't pop out and trash the splines. Get an M8 fine bolt to hold it in properly. Also best to use a socket and breaker bar over this but your tool looks a bit long. The short shimano tool is best with a socket over it. Is it a decent quality tool?
Use heat on the BB shell if you can. A blow torch, heatgun, whatever you have.
Metre long bar or get someone to weld a bar to it the actual BB
I had a four hour nightmare where a tapered crank wouldn't come off the BB (angle grinder) after the threads fell apart using a puller. Then the BB itself was stuck tight and I had to cut sections out of the drive side and tap it using a drift to start it unscrewing after using a 4ft bar on the non-drive side.
Not a fan of square taper for these sorts of reasons (plus it was a S/H bike and maybe hadn't had much love during it undoubtedly long life)
JWT-
are you a fan of copaslip?
I'm a fan of cartridge bottom brackets because they have lifespans measured in decades not months.
@nbt make sure your neighbours impact driver is a 1/2" Square drive impact driver and not one of the smaller 1/4" hex drive ones. As the 1/4" hex ones simply do not have the torque required to loosen it.
Spurred by this, went to work and managed to get the ST BB (not hole through, just bolt thread) out of my M2. I might have been turning it the wrong way before, and was definitely using a standalone tool before. This time used a BBB tool with integrated bolt - worked a treat...
This time used a BBB tool with integrated bolt – worked a treat…
Got a link to that please?
are you a fan of copaslip?
ballsofcottonwool - Yes I am but, this was on a bike bought 2nd hand, so no idea what it had been through before I attempted to change the BB and crankset!
@nbt - something a lot like this (not sure of length of the handle on mine) - when in stock -
https://www.chainreactioncycles.com/bbb-bottom-bracket-tool-pullstar-btl20l/rp-prod87604
Will handle octalink, ISIS and traditional (ST).
I thought the locking threads were wider on an octalink BB? The crank extracter certainly needs a bit to go into the hole
The crank bolt threads on the tool are two-step - thinner then fatter.
This has probably already been thought of or suggested! but if you had a BB tool with a hole and a bit of stud (or long bolt) through it bolted to the axle, that'd hold it in place while you wrenched it..
I done a diagram
Yep Dez, that's the idea, just need to get a fine thread M8 bolt and some nuts to lock the tool in place. If the impact driver doesn't work, I'll order some (and some proper spanners and maybe an extension bar too)
The old Tacx ones (just found my Campag one in the garage) used to have that built in, if you could find one of those. Separate plastic bit to screw the bolt in
https://www.wiggle.co.uk/tacx-bottom-bracket-cartridge-removal-tool
Sorry, I'll shut up after this!
eBay has em
https://www.ebay.co.uk/itm/Tacx-T4430-Splined-Tool-For-Shimano-Taper-15-x-1-32mm-Wrench-/133783953335?_trksid=p2349624.m2548.l6249
make sure your neighbours impact driver is a 1/2″ Square drive impact driver and not one of the smaller 1/4″ hex drive ones
My impact wrench the hex drive pulls off to reveal a 1/2 underneath. Assuming you are talking about a hammer blow one rather than a rattle gun.
Much better option than farting about with scaff poles etc.
Neighbour loaned me her DeWalt Impact driver. It doesn't have a 1/2 drive so won't help me 🙁
It's one of these
https://www.dewalt.co.uk/products/dcf886n-xj--18v-xr-brushless-impact-driver-bare-unit
I've ordered a threaded rod with nuts and washers. I'll pick up a proper length fixed spanner and maybe some kind of extender
Seriously just get one of these. You want hard sharp application of force not long high torque slow application.
Handy things (the half inch drive is hidden under a hex adapter in the photo)
If that doesn't get it moving you're going to start snapping thing and removing splines and then you're popped.
You want hard sharp application of force not long high torque slow application
Back to my never to be forgotten lesson from MrsP have you tried clamping the tool (as best you can) and repeatedly tapping the spanner? It worked for her so it'd be good to get some benefit from my never ending suffering...
Just bumping this, I manage to get it freed eventually. I ordered a threaded rod and managed to lock the BB adapter to the axle, as per the diagram supplied by @DezB
Tapping the adjustable spanner with a hammer did nothing, but I realised that I could use my tandem roof rack as act as a 7 foot long breaker bar. On trying that though I could see the jaws of the adjustable opening - what I really needed was a bigger, preferably fixed size spanner.
Thankfully I was able to lay my hands on @IHN's massive tool and that was able to do the job, you can see the difference in size between his massive 15 incher versus my measly 8-incher and the "little" siz incher
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though I did have to stand on the tool and heave on the bars to get it to move