K2 Cycling - Recent Questions, Troubleshooting & Support
Removing crank from my K2 Razorback.
Mario, there are two type of cranks that you could have. The first is held on by a bolt in the center of your crank, the second type has bolts holding on the crank arm on the non-drive side and the whole thing slips out of the bottom bracket bearings. If you have the older style with the bolt in the center of the crankset you will need a 14 or 15mm socket wrench and a crank puller. The crank puller will thread in to the crank and a center "driver" is then turned in against the bottom bracket to remove the crank arm. You can remove the rings with out taking the crank set off, however. The hard part about that is holding the back side of the chain ring bolts so they don't spin while you try to loosen them. There is a handy little tool made for that, too.
Freewheel fails
I assume you means that it slips sometimes. This is usually due to the ratchet mechanism just needing a bit of lube. If you have a thread-on type freewheel (see image below) then you can usually just squirt some WD40 into the little holes near the center of the freewheel. Those holes would be facing the table in the threaded freewheel pictured below. If that doesn't work for you, it's not all that difficult or expensive to just replace the whole freewheel. However, if you have the splined type pictured on the right, the ratchet mechanism is in the wheel's hub, making replacement more of a big deal. WD-40 would probably do the trick on this type too, but I never had one some I'm not certain how easy it is to get the lube where you need it. Good luck!
11/8/2012 3:15:12 PM •
K2 Cycling
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Answered
on Nov 08, 2012
Gears keep slipping
Have a trusted bike shop adjust the shifter cables. I'm told that all new bikes need to be re-tuned a month or 2 after purchase due to cable stretch.
Raise handlebars
http://www.sheldonbrown.com/handsup.html
A major limitation is the steerer tube length. No matter how many times you cut a steerer tube it won't get longer.
Getting Riser Bars or simply flipping the stem over or getting one with a different rise and reach might give you the added height you need. If you LIKE the handlebars, the stem is the best and least-invasive option as most new ones come with front loaders (detachable front caps) that allow replacement without stripping components off one side of the handlebar. In minutes a Bicycle Shop could swap any number of them onto your bike for you to try.
A reputable Bicycle Shop would have fit the bike to you before you took it home.
9/3/2011 3:49:36 PM •
K2 Cycling
•
Answered
on Sep 03, 2011
How do we raise the
The only way to do this is to get new stem with the bigger angle degree. If not sure, get the adjustable stem.
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