Disassembly help for a beginner
#1
Newbie
Thread Starter
Disassembly help for a beginner
I'm struggling with disassembling an old road bike and need some advice.
How do I remove these shifters. And how do I remove this cassette?
How do I remove these shifters. And how do I remove this cassette?
#2
Old fart
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For the shifters, once you have the bolt out (as in your picture) you should be able to simply pull them straight off the mounting boss. If that's difficult, apply some penetrating oil and rotate the lever to spread it around until it comes free.
The cluster appears to be a Uniglide freehub. The smallest sprocket is threaded, and holds the other sprockets in place. To remove the cluster, you need two chain whips: one to prevent the cluster from rotating while you use the other to unscrew the smallest sprocket (counter-clockwise). Once the smallest sprocket is removed, you should be able to lift the other sprockets straight off the freehub body
The cluster appears to be a Uniglide freehub. The smallest sprocket is threaded, and holds the other sprockets in place. To remove the cluster, you need two chain whips: one to prevent the cluster from rotating while you use the other to unscrew the smallest sprocket (counter-clockwise). Once the smallest sprocket is removed, you should be able to lift the other sprockets straight off the freehub body
#3
Just Pedaling
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I just wanted to note for everyone else that is reading this thread--the DORK DISK IS STILL INTACT!!
I also want to applaud Zizkov for wanting to learn bike mechanics. Good on you,
I also want to applaud Zizkov for wanting to learn bike mechanics. Good on you,
#5
Really Old Senior Member
And a note on the Uni Glide hub.
All but the smallest cog can be flipped over to double their life.
HG cogs can be used (except the smallest) by widening the narrow spline with a file or ??
All but the smallest cog can be flipped over to double their life.
HG cogs can be used (except the smallest) by widening the narrow spline with a file or ??
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#6
Senior Member
For the shifters, grab them by the tip and wiggle in and out. They usually come loose that way. Is that a celeste Bianchi in the background of the last pic?
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#7
Newbie
Thread Starter
I still can't loosen the smallest sprocket on the freehub. So if someone's got any tricks to share I'd be happy to try them.
#8
Senior Member
As mentioned above, 2 chain whips are required! One chain whip is wrapped around the large cog the other is wrapped around the small cog (one that you’re removing). The threading on the freehub body is “normal” i.e. righty-tighty, lefty-loosey. The chain whips need to be applied in a way that keeps the cluster from turning counter-clockwise while turning the small cog counter-clockwise to remove it. Applying some penetrating oil (PB Blaster, Liquid Wrench, etc.) to the threading between the small cog and the freehub body may be necessary.
#9
Senior Member
As mentioned above, 2 chain whips are required! One chain whip is wrapped around the large cog the other is wrapped around the small cog (one that you’re removing). The threading on the freehub body is “normal” i.e. righty-tighty, lefty-loosey. The chain whips need to be applied in a way that keeps the cluster from turning counter-clockwise while turning the small cog counter-clockwise to remove it. Applying some penetrating oil (PB Blaster, Liquid Wrench, etc.) to the threading between the small cog and the freehub body may be necessary.
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#10
Just Pedaling
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In a pinch that will destroy things you can always borrow a couple of large pipe wrenches. But be forewarned that you will probably destroy cogs doing it this way. If you have a LBS nearby you might take the wheel in and see what they would charge just to pull it off for you, Good luck
#11
Newbie
Thread Starter
It took quite a while but the freewheel is now dismantled and degreased, thanks for all the advice.
It's in a bit if a state though. Are there any copies on the market? The original Shimano Uniglide freewheels on Ebay are a bit to pricey for this bike.
It's in a bit if a state though. Are there any copies on the market? The original Shimano Uniglide freewheels on Ebay are a bit to pricey for this bike.
#12
Senior Member
In a pinch that will destroy things you can always borrow a couple of large pipe wrenches. But be forewarned that you will probably destroy cogs doing it this way. If you have a LBS nearby you might take the wheel in and see what they would charge just to pull it off for you, Good luck
#13
Newbie
Thread Starter
Ya, using pipe wrenches is likely to be destructive! Chain wrenches are relatively inexpensive tools to buy and IMHO, diy bike mechanics should have 2 of them. For someone that doesn’t have them, a trip to the LBS is the next best choice. For someone that makes frequent purchases, the LBS may not even charge to remove the lock ring/cog. It prolly takes less than 30 seconds to do the job.
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#14
Senior Member
Did you get it to break free? If not, might I suggest a different method? While gearbasher’s method may work in most cases, for those really stuck cogs, I place the chain whips so that they form a wide “V” with the holding whip on the largest cog (more mechanical advantage) and the loosening whip on the smallest cog. With the wheel standing vertically you can apply significant downward force to the arms of each whip. Even the tightest cog should come loose. Wear gloves, safety glasses and save the beer for when the job is done .
#15
Newbie
Thread Starter
Did you get it to break free? If not, might I suggest a different method? While gearbasher’s method may work in most cases, for those really stuck cogs, I place the chain whips so that they form a wide “V” with the holding whip on the largest cog (more mechanical advantage) and the loosening whip on the smallest cog. With the wheel standing vertically you can apply significant downward force to the arms of each whip. Even the tightest cog should come loose. Wear gloves, safety glasses and save the beer for when the job is done .
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