[email protected] (TJ Poseno) wrote in message
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[email protected]>...
> I was just trying to remove the cassette, and got it off, but WOW, was that on tight. I wasnt
> looking to salvage any of the gears so I just used a pipe wrench on the threaded gear. with a 3ft
> section of pipe off of that and a 2 foot section to hold 1st gear with a hommade chain wip. BROKE
> a chain trying to get it off. Guess after a while (with no rust)they liek to stay on. Had to
> tighten a bit to break it loose then it came loose.
My understanding is that Shimano changed the design to a lockring rather than a threaded small
spocket to avoid this problem.
As on a freewheel, when you ride the threaded sprocket tightens, becoming harder to remove. This is
prevented by having all the sprockets splined and retained by an additional lockring.
I assume you have checked the method of attachment on the other bike.
Sometimes applying a shock will loosen things up abit - a sharp tap with a hammer on your extension
handle - this has been known to work where other methods fail. It certainly worked for me when
freeing up a jammed tap on my colleagues electosamovar, but that is somewhat OT here.
>
> I need to take a cassette of another biek with no damage. Does anyone here have any links to any
> places that have a hommade chain wip, mine wasnt to gentle.
I use a length of old chain attached to a right angle shelf bracket. I then place the right angle
bracket over the wheel rim (suitably protected) and wrap the chain around the sprockets. Removing
the lock ring first takes up any slack in the chain, then tensions it by pulling the bracket against
the rim. For threaded sprocket type you will need two chainwhips.
===¬
: ; ; ;
:
In this diagram : is wheel, ===¬, angle bracket and ; old chain.