cassette
05-24-22, 11:34 AM
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cassette
I'm planning on buying second-hand wheels for my old MTB over the internet. I got some pics from the seller, among other things, of the cassette, and there's one thing that seems a little odd about it. So far I've had a freewheel and don't know much about cassettes. Could someone let me know:
1. if the part I marked red, i.e. a piece of metal In between the sprockets, is normal,
2. what the condition of the cassette is just by the attached pics, and
3. if it's possibile to run an 8-speed cassette on a bike with a 7-speed freewheel without additionally buying another shifter/ deraileur/other pieces of equipment. If so, what might be possibile adjustments?
1. if the part I marked red, i.e. a piece of metal In between the sprockets, is normal,
2. what the condition of the cassette is just by the attached pics, and
3. if it's possibile to run an 8-speed cassette on a bike with a 7-speed freewheel without additionally buying another shifter/ deraileur/other pieces of equipment. If so, what might be possibile adjustments?
05-24-22, 11:48 AM
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1. Can't be sure, but that looks like a ramp to help shifting - not seeing it on any other cogs though.
2. Looks "not worn out".
3. Probably not - depending on rear frame spacing, shifters, indexing, and wrap capacity.
2. Looks "not worn out".
3. Probably not - depending on rear frame spacing, shifters, indexing, and wrap capacity.
05-24-22, 12:12 PM
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I think you're seeing the same kind of ramp you can see more clearly on the largest cog in the third picture, at about 2:00 o'clock.
05-24-22, 12:15 PM
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05-24-22, 12:40 PM
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That is a shifting ramp on a cog, normal. The cassette is obviously used and dirty, but the teeth look to be in good shape. If you are talking about a true freewheel hub, the freewheel screws onto threads on the hub. You cannot mount a cassette on it. The cassette and cassette hub have splines that match up to fit, then a locking ring to hold them all together, no threads.
05-24-22, 12:58 PM
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So you would have a hub that wouldn't fit in your bike.
And if you have 7-speed indexed shifters they will not work on an 8-speed cassette.
I advise you measure your dropouts - probably 126mm, and then find wheels with 126mm hubs.
If you do have 130mm dropouts, and friction shifters, then those wheels and that cassette would probably be fine.
You could also overhaul your existing hubs and build them up with new rims and spokes for something pretty nice.
05-24-22, 01:10 PM
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I'm planning on buying second-hand wheels for my old MTB over the internet. I got some pics from the seller, among other things, of the cassette, and there's one thing that seems a little odd about it. So far I've had a freewheel and don't know much about cassettes. Could someone let me know:
1. if the part I marked red, i.e. a piece of metal In between the sprockets, is normal,
2. what the condition of the cassette is just by the attached pics, and
3. if it's possibile to run an 8-speed cassette on a bike with a 7-speed freewheel without additionally buying another shifter/ deraileur/other pieces of equipment. If so, what might be possibile adjustments?
1. if the part I marked red, i.e. a piece of metal In between the sprockets, is normal,
2. what the condition of the cassette is just by the attached pics, and
3. if it's possibile to run an 8-speed cassette on a bike with a 7-speed freewheel without additionally buying another shifter/ deraileur/other pieces of equipment. If so, what might be possibile adjustments?
Hard to gauge the extent of wear from a photo, although the smallest sprocket teeth look to have some "shark fin" asymmetry suggesting wear. In any case, you'll just have to see how well the cassette plays with whatever chain you propose to use.
The number of speeds is irrelevant - you can't use a cassette on a freewheel hub
05-24-22, 01:22 PM
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you could also get new something like https://www.velomine.com/index.php?m...oducts_id=6377 and https://www.thebikesmiths.com/produc...MaAm0jEALw_wcB
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Life is too short not to ride the best bike you have, as much as you can
(looking for Torpado Super light frame/fork or for Raleigh International frame fork 58cm)
