i wonder if i could get a bike in the back of that?

http://www.tekforums.co.uk/posts/list/942.page

Vell, update us! Or are you too busy riding the dang thing??

ive stripped the bike down and have tidied it up.

had a bit of a problem with the crankset;



I had a problem tightening the lockring (see diagram). I managed to tighten it, but it wasnt fixed properly, i took it to my bike shop, they werent much use - they didnt have an appropriate tool, either...

I should have it sorted, by the weekend, and be able to give it a test run.

Im completely unfamiliar with such a design, but it seems that lockring could be tightened with a pin spanner, or even channel lock pliers if you wanted to get sloppy and mark it up a little.

Did it come with a proprietary bottom bracket?

No, its a standard shimano fit, the lockring system is the same design as on my Deore LX crankset...

You need a really big spanner to use with the Shim BB tool also, btw.

/not suggesting that Badabing is a really big spanner...

gah!



I tried to fit the crankset on last night, but have hit a snag; i am using self extracting crankbolts, when i torque up the bolts they basically compress the crankset [the new one] onto the bottom bracket shell, stopping the cranks from turning.

I used the same bolts on the Deore LX crankset and it works - the crankset is tightened up and can move freely. The problem is the Middleburn lockring on my new crankset is flat, whereas the deore LX has a raised centre, this centre acts as a spacer, effectively stopping the lockring from compressing onto the bottom bracket shell. Im now wondering whether or not i need a new BB, or can i remove the lockring off the Deore LX unit and use it on the new one, the question being, why didnt the new one come with such a lockring in the first place?

 

Simplest solution would be to get some short ring bolts, covert the LX kit to a single ring, and either return or sell the Middleburn stoff on fleabay.

Id run by a bike shop and have a gab as well, perhaps theres a BB thats got a bit more Q factor and wont be as estupido in its relation to the Middleburn cranks as the current set.

There may be simpler solution, but unless ya take a picture and post, my Cretaceous brain cant really get enough lizard meat to digest the problem.

Im going to fling the bike in the bike of the Micra tomorrow and drive up to a bike shop and see what they suggest...  :?

Only time I got something like that I used an oil filter remover to hold it.

You might get the same effect from a jar opener, looks like in the link below but I got 2 for £1 from a pound store

http://www.store-shop.com/jar-opener.html

Sounds like its not engaged the threads and should just jiggle off.

From what most singles Ive converted over the years have taught me, youre cog seems a bit too far outboard for typical chainlines. It could be right on, so take that with a grain of salt, Ive just never seen one so far out.

Almost always the position ends up being, using your particular spacers in the pic: big spacer, little spacer, cog, little spacer, lockring.

If the final spacer is a bit too much, break apart a cassette and recycle the spacers. Srams have a hex screw on the back, Shimanos require grinding off a pop rivet.

Indeed, something that should have taken 20 minutes is proving to be a bit crazy.

Yeah, i put it together to assertain how it worked, thinking that adjusting it would a walk in the park, but the damned thing will not move! its certainly not going to "jiggle off"...