I’m changing the gearing up on the DRZ as it’s a bit short and I’m trying to fix that primary sprocket swingarm rubbing issue.
Clearly I’ve never done this before as I struggled to get the primary sprocket off, with the wheel moving as I tried to undo the sprocket.
Asking Claire to stand on the rear brake didn’t help. Sticking a mallet between the tyre and swingarm didn’t work. Sticking the mallet through the wheel broke it 
, but sticking an extension bar through one of the rear sprocket holes did lock it in place but I couldn’t undo the main sprocket nut, it was stuck solid even with a 40cm or so bar.
Have ordered some adapters to give my compact impact driver a go. Probably won’t have the power but worth a shot I reckon.
If that doesn’t work I’ll look for a super long extension bar (did try a fashion one up at home but didn’t have anything that would work, Ie a tube).
Bah.
Oh and I reckon the chain will be too long now even with use of the chain adjusters, so will probably need to get some equipment to break the link chain and buy a new one to shorten it.
Feel like I shouldn’t have bothered today 
