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Yeah I have a similar situation except mine are old cranks with the nut where its attached to the front chainring rather than cotters. Going into a Bottom Bracket which needs a lockring. Mine had two chainrings and I drilled off the smaller so that means the existing chain ring sits out a bit further too. Sorry no help to edmundro but I'd appreciate what suggestions people may have.
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I have an old road frame that I found with 3 piece cranks that bolt on to old style bb. It had two chainrings on it the sort that are put together in the factory, cheap nasty ones. I bored off the inner (smaller) chainring with a drill fairly neatly. I've been running this bike as a single speed with an old road wheel re-dished with a BMX free wheel. It all works fine as is.
I have some miche primato hubs that I will be building up next week. What are the chances of this lining up to give me any sort of chainline? I'm sort of thinking not bloody likely.
Is it true that the bottom bracket shell will be a different size on this frame too? -
Thanks guys glad your tiff got resolved too. In a weird twist of fate I ended up in a really great bike shop getting it chased. I'm staying in the middle of nowhere just now so had given up hope of getting it done till my return to civilisation. However my middle of nowhere was actually pretty close to another middle of nowhere, Clachan of Campsie. It's actually pretty close to Glasgow but you would never guess, tiny wee village with waterfalls etc. 'WheelCraft' is the shop in question it's in a little row of converted houses with a tea shop all very quaint. The owner insisted on making me a coffee and then a fresh pot for me and my family on our return from the waterfall and made me climb a ladder into the loft to see how many rims he stocked. That sounds dodgy I know. Bike junk everywhere whilst they built wheels to classical music. If you're ever up that way just check it out the guy's a real character.
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My other bike is a mtb have managed to successfully remove worn out bottom bracket. Bought the replacement but can't get it in. First time I have attempted this job. Being a bit of a doofus and not realising what was involved I may have knackered the threads? The new one goes in nicely about half way then gets stuck. Do I need to chase and face? Is there a way I can do that myself without too much expense? It's an aluminium frame.
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Hey this is just what I was looking for the other day. About to start building wheels. I'm using IE and when I put Mavic into the search field it does nothing? I guess just some teething trouble it found miche in the hub field no problem. I guess some way to manually put in dimensions for stuff not on the database would be handy but I think thats already been suggested?
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thanks for the help so far. I suppose it's not essential that I keep the threads but it would be nice. It would seem it's time for the trusty hammer approach. I just wasn't sure whether the tool I had was fitting properly. Just to clarify I am attempting to remove said cranks from bottom bracket spindle. You don't suppose these cranks pre-date the tool I'm using then?
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The cranks in question are Stronglight swaged directly onto the gears. The bike I'm stripping down is an old Claud Butler majestic, I would like them to come off intact if possible. I bought a standard 14mm extraction tool and tried it out earlier today. Wouldn't budge even with me leaning on a spanner gripping the tool. The whole thing just seemed to get tighter. Not sure if the smaller of the threaded pieces on the tool is possibly too large? Does it all just need more lube?
just found this previous post by Max:
The industry standard chainline for a double road chainset puts the inner ring at 41mm and the outer at 46mm. This is supposed to be a standard (so front derailleurs and frame makers are all in tune) but in practise it can vary a bit. You can of course use different length spindles and chainring postioning/spacers to alter it a bit to suit.