Cassette question for training rear wheel.
03-03-21, 01:30 PM
#1
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Cassette question for training rear wheel.
my cassette on my rear tire is a Shamano HG41, 11-34, 8 speed, so as to not have to keep swapping the cassette back and forth I'm building a training wheel. I can't find a 11-34 cassette to save my life, will a 11-32, 8 speed work with out having to tweak the derailer settings?
03-03-21, 01:31 PM
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Yes.
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03-03-21, 02:52 PM
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Any change of cassette or wheel/trainer is likely to require slight adjustments of limits or indexing, and less likely B-screw, due to manufacturing tolerances.
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03-03-21, 03:13 PM
#4
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You may have to turn the barrel adjuster a click or 3. Maybe none.
All are in the range of "normal". Just manufacturing tolerances.
You shouldn't need to touch the screws unless one of those adjustments are borderline.
Keep in mind, if you wanted something like a 13-26 or other combo, you CAN do that. That would probably entail a B screw adjustment, depending on how far you deviate from the 14-34.
B screw controls how close the guide pulley gets to the cogs. IF it's hitting, you screw it in. Going to something like the 13-26, you'd screw it out a bit so the pulley tracks a little closer. Chances are you'd never notice if you didn't turn it.
All are in the range of "normal". Just manufacturing tolerances.
You shouldn't need to touch the screws unless one of those adjustments are borderline.
Keep in mind, if you wanted something like a 13-26 or other combo, you CAN do that. That would probably entail a B screw adjustment, depending on how far you deviate from the 14-34.
B screw controls how close the guide pulley gets to the cogs. IF it's hitting, you screw it in. Going to something like the 13-26, you'd screw it out a bit so the pulley tracks a little closer. Chances are you'd never notice if you didn't turn it.
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03-03-21, 04:10 PM
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Those are very similar gear combinations and chain wrap. If anything (if the new wheel has the cassette further in or further out), you might have to adjust the barrel adjuster and loosen a limit screw slightly. If that's the case, you will probably memorize how much to adjust every time you swap wheels. Honestly though, I only ever had to do that when I was swapping between a wheel with an 8s cassette, and a wheel that had been converted from 126mm 7s freewheel to 130mm 8s freewheel.
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03-04-21, 08:08 AM
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Shimano and Microsoft both make an 8-speed 11-34t cassette although they can be hard to find. You could try asking your LBS to special order one for you. Looks like Rivendell Bicycle has one and I bet you'd find one on Amazon if you use them.
03-04-21, 12:45 PM
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03-04-21, 12:51 PM
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When you say a "training wheel" are you talking about for use on the road or on the trainer? Or both?
03-04-21, 01:33 PM
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I just started riding again about two month ago and Just had TKR surgery and want to ride the bike in the garage for rehab. I have the other knee coming up as soon as the first one heals up. Instead of ruining a good road tire I am building a Trainer Wheel for just for "garage time rehab" that way If i get a chance to get out on the road I just switch out wheels. I realize I could swap out the cassette back and forth but then the odds of screwing up increase.
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03-04-21, 02:15 PM
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Congrats on the new knee!
Smart to have an indoor wheel. As others have said, there shouldn't be any issue other than a tiny fine tune on the barrel adjuster. If you are like me, you will probably never use the first or last cog of the cassette on an indoor trainer anyway.
Smart to have an indoor wheel. As others have said, there shouldn't be any issue other than a tiny fine tune on the barrel adjuster. If you are like me, you will probably never use the first or last cog of the cassette on an indoor trainer anyway.
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03-04-21, 07:42 PM
#12
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