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#1
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SS question - casette destruction
Ok so I have the house to myself for an afternoon's quality study and I
make the fatal mistake of "a quick look" at Sheldon Brown's single speed page. The next thing you know the house stinks of citrus degreaser and there's a 6 speed casette sitting where the text book should be. So here's my two questions which hopefully nobody will answer till after I've actually done some study. 1, The bike to become the SS has a standard freewheel roadie hub and casette. Do I need to replace the casette with something that has one sprocket only, or can I remove the sprockets from the casette and rebuild it with spacers where the unneeded sprockets were? 2, How the hell do you take apart a casette? Given Sheldon says "You can often get a suitable number of spacers by taking apart a couple of discarded, worn-out cassettes" I'm assuming you can take them apart but I'm wondering how destructive you have to be about it. DaveB "high on citrus fumes" |
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#2
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SS question - casette destruction - CORRECTION
Wrong terminology, I should have said I have a freewheel (Suntour) not a
casette. So how much does that change things? DaveB "busy studying - yeah right" |
#3
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SS question - casette destruction
DaveB wrote:
Ok so I have the house to myself for an afternoon's quality study and I make the fatal mistake of "a quick look" at Sheldon Brown's single speed page. The next thing you know the house stinks of citrus degreaser and there's a 6 speed casette sitting where the text book should be. So here's my two questions which hopefully nobody will answer till after I've actually done some study. 1, The bike to become the SS has a standard freewheel roadie hub and casette. Do I need to replace the casette with something that has one sprocket only, or can I remove the sprockets from the casette and rebuild it with spacers where the unneeded sprockets were? I don't know the answer to that one. 2, How the hell do you take apart a casette? Given Sheldon says "You can often get a suitable number of spacers by taking apart a couple of discarded, worn-out cassettes" I'm assuming you can take them apart but I'm wondering how destructive you have to be about it. Wrong terminology, I should have said I have a freewheel (Suntour) not a casette. So how much does that change things? No destruction should be necessary. I have an old dismantled 5-speed Suntour freewheel in my hand. You could once readily buy individual Suntour sprockets to replace worn ones. On the 5-speed at least, the 2 small sprockets screw on, and the other 3 are on splines (and held on by the 2 screwed-on ones). The screw-on sprockets get tightened by peddling force, so you need to be forceful to take it apart. I use an old chain wrapped around the large sprocket with the ends anchored in a vice to hold the freewheel. Then unscrew the smallest sprocket with a "bike hand" (piece of chain attached to a lever). You may need to put a piece of pipe on the "bike hand" for extra leverage. As a last resort, you can rotate the sprocket off using a hammer and a soft drift (like a piece of hardwood). But be aware that _too_ much force applied this way onto individual teeth can snap them off. John |
#4
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SS question - casette destruction
DaveB Wrote: Ok so I have the house to myself for an afternoon's quality study and I make the fatal mistake of "a quick look" at Sheldon Brown's singl speed page. The next thing you know the house stinks of citrus degreaser and there's a 6 speed casette sitting where the text book should be. So here's my two questions which hopefully nobody will answer till after I've actually done some study. 1, The bike to become the SS has a standard freewheel roadie hub and casette. Do I need to replace the casette with something that has one sprocket only, or can I remove the sprockets from the casette and rebuild it with spacers where the unneeded sprockets were? 2, How the hell do you take apart a casette? Given Sheldon says "Yo can often get a suitable number of spacers by taking apart a couple of discarded, worn-out cassettes" I'm assuming you can take them apar but I'm wondering how destructive you have to be about it. DaveB "high on citrus fumes" dont they all just fall apart into their separate pieces once pulle off the cassette body? (campy do...) some older cassettes are mad of 'groups' (for want of correct term comprising 2-3 cogs. is this what you have neded up with? If yuze got the roight tool to undo the ockring thingy you should jus be able to slide the bits off. i see a trip to LBS for you to get appropriate tool and extra spacer -- flyingdutch |
#5
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SS question - casette destruction
"DaveB" wrote in message ... Ok so I have the house to myself for an afternoon's quality study and I make the fatal mistake of "a quick look" at Sheldon Brown's single speed page. The next thing you know the house stinks of citrus degreaser and there's a 6 speed casette sitting where the text book should be. So here's my two questions which hopefully nobody will answer till after I've actually done some study. 1, The bike to become the SS has a standard freewheel roadie hub and casette. Do I need to replace the casette with something that has one sprocket only, or can I remove the sprockets from the casette and rebuild it with spacers where the unneeded sprockets were? 2, How the hell do you take apart a casette? Given Sheldon says "You can often get a suitable number of spacers by taking apart a couple of discarded, worn-out cassettes" I'm assuming you can take them apart but I'm wondering how destructive you have to be about it. DaveB "high on citrus fumes" well you were in the right place, just on the wrong page. http://www.sheldonbrown.com/freewheels.html#replace |
#6
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SS question - casette destruction
DaveB Wrote: Ok so I have the house to myself for an afternoon's quality study and I make the fatal mistake of "a quick look" at Sheldon Brown's singl speed page. The next thing you know the house stinks of citrus degreaser and there's a 6 speed casette sitting where the text book should be. So here's my two questions which hopefully nobody will answer till after I've actually done some study. 1, The bike to become the SS has a standard freewheel roadie hub and casette. Do I need to replace the casette with something that has one sprocket only, or can I remove the sprockets from the casette and rebuild it with spacers where the unneeded sprockets were? 2, How the hell do you take apart a casette? Given Sheldon says "Yo can often get a suitable number of spacers by taking apart a couple of discarded, worn-out cassettes" I'm assuming you can take them apar but I'm wondering how destructive you have to be about it. DaveB "high on citrus fumes" 1a. No...... 1b. Yes. Pull apart cassette/s. Choose sprocket size you want. Put spacers chosen sprocket back on. Take some time here to get the chain-line a straight as possible. You may need the smallest sprocket (ie, 11 or 12 as well as the lock ring to hold everything in place properly. 2. Some cassettes use small allen keyed bolts (~2mm) or hex bolts while some are riveted together. Undo bolts o drill/dremel/crowbar/angle grind the rivets. You will need more than one cassette worth of spacers to fill the ga from the missing/redundant sprockets. Enjoy the SS :- -- Bikesoiler |
#7
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SS question - casette destruction
i see a trip to LBS for you to get appropriate tool and extra spacers I thought I had the appropriate tool, it's called a 600mm pipe wrench (that oughta have those anti-multigrip people cringing). But alas still couldn't manage to get a combination of that, some old lengths of chain and a vice to have much impact. Amazingly after that the sprockets still look ok. Looks like a discussion required on BR tomorrow. DaveB |
#8
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SS question - casette destruction
Soiler/Dutch/Gags are any of you BR'ing tomorrow? If so I might bring
the bloody thing along for closer examination. DaveB "with no option left but to study" |
#9
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SS question - casette destruction
DaveB Wrote: i see a trip to LBS for you to get appropriate tool and extra spacers I thought I had the appropriate tool, it's called a 600mm pipe wrench (that oughta have those anti-multigrip people cringing). But alas still couldn't manage to get a combination of that, some old lengths of chain and a vice to have much impact. Amazingly after that the sprockets still look ok. Looks like a discussion required on BR tomorrow. DaveB Are you sure it's a cassette & not a cluster? http://www.sheldonbrown.com/freewheels.html#replace -- Bikesoiler |
#10
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SS question - casette destruction
DaveB Wrote: Soiler/Dutch/Gags are any of you BR'ing tomorrow? If so I might bring the bloody thing along for closer examination. DaveB "with no option left but to study" genvale for moi D"ooooooh. no hill!"Dutc -- flyingdutch |
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