Apologies if this has already been addressed. If one were to buy a new shimano 12sp setup (because they’re so easy to get hold of), but still had an 11sp bike, how hard would it be to swap those bikes on a wahoo kickr (or other smart trainer)? Would it require changing out the cassette?
Yes, you would need to use a 12 speed cassette.
Would the 11sp bike work with the 12sp cassette?
You would need 12 speed shifters, 12 speed derailleurs, 12 speed chain, 12 speed cassette, and 12 speed chainrings or crankset.
In theory no.
But it depends how you use your trainer. I do almost all my stuff in erg mode now, so you should be able to find A gear that works and stay in that with the resistance changing automatically. Want to race Zwift? nah.
In theory no.
But it depends how you use your trainer. I do almost all my stuff in erg mode now, so you should be able to find A gear that works and stay in that with the resistance changing automatically. Want to race Zwift? nah.
So a 12 speed bike could find 2-3 gears that work on a 11 speed cassette? And the other way around?
I just wish I don’t have to renew any bike soon… Currently TT, road bike and smart trainer set up for rim brakes and 11v Shimano. Anyone with discs and 12 speeds would make a mess
Would the 11sp bike work with the 12sp cassette?
I would go the other way. Leave the 11spd cassette on the kicker, only use erg mode for the new bike and hope you can find a gear or two that works with the lesser cassette. Historically newer chains work fine with older tech, even though not advertised (ie 11spd chain on 10spd cassette).
I would make a modest wager that we can use 12 speed cassette, after market mechanical 12 speed shifter and current 11 speed long cage derailleur to run new 12 speed.
The shifters meter the cable that runs the splits and the parallelogram leg lengths of Shimano have not changed since 8 speed by my measure. I bought a bar end 12 speed on Amazon for
80$ but don’t have the opportunity to use it yet . I may not until I see better cassettes or a way to assemble one myself. Perhaps a few 11speed cogs with custom spacers?
So many of want 12 or 13cog x 30- 36 with close splits for 15 to 24 mph and not an 11 cog . If you build such gizmos please message me. I ll buy 2 or 3.
Apologies if this has already been addressed. If one were to buy a new shimano 12sp setup (because they’re so easy to get hold of), but still had an 11sp bike, how hard would it be to swap those bikes on a wahoo kickr (or other smart trainer)? Would it require changing out the cassette?
if you were to buy a Dura Ace 9200 or 8100 groupset and put it on a bike; or buy a bike with either groupset; that’s a tidy expense. shimano appears to me to be abandoning mechanical for both these groupsets. these are currently the only 12sp groupsets available by shimano in road. the answer is yes, you need a 12sp cassette to put that bike on your trainer. but if you found that a bike equipped with one of these groups is your next bike, you’ve got a little bank. the incremental cost of a 12sp cassette, above the price of such a bike, would not be that ultra painful. fortunately, you don’t have to buy anything else, assuming that you have thru axle end caps for your trainer.
there is one way to avoid this whole issue, and that does cost, but, there’s a big performance advantage. if you’re in the market for a new smart trainer, consider going all the way up to a smart bike. the advantages of a smart bike over a smart direct drive trainer are legion. at that point, there’s no cassette, no gearing issues, no having your bike perform trainer duty.
It’s interesting how we all interpret a question in slightly different ways, probably based on our own thinking.
I’ve got a mix of bikes, old 9sp road, 10sp TT and 11speed new road. I swap between the old road and the tt on the Neo v1 and so that meant swapping cassettes each time. The new 11sp road with through axles has never and will never* go on the trainer.
So I’d read it that the OP was looking to be able to do the same, swap between 2 bikes on the one trainer and was seeking to avoid the time swapping cassettes each time. The cost of a second 12sp cassette on top of the 12sp bike didn’t enter my thinking, it was all about the time.
On the other hand an equally legit assumption is that if someone gets a new bike they sell the old one and want to train indoor/outdoor on the same one, so it’s a cost discussion not a one off task. As you say in this case buy another cassette, a one off 10 minute task, and you’re done.
*never say never, but I can’t see why it would.
It’s interesting how we all interpret a question in slightly different ways, probably based on our own thinking.
I’ve got a mix of bikes, old 9sp road, 10sp TT and 11speed new road. I swap between the old road and the tt on the Neo v1 and so that meant swapping cassettes each time. The new 11sp road with through axles has never and will never* go on the trainer.
So I’d read it that the OP was looking to be able to do the same, swap between 2 bikes on the one trainer and was seeking to avoid the time swapping cassettes each time. The cost of a second 12sp cassette on top of the 12sp bike didn’t enter my thinking, it was all about the time.
On the other hand an equally legit assumption is that if someone gets a new bike they sell the old one and want to train indoor/outdoor on the same one, so it’s a cost discussion not a one off task. As you say in this case buy another cassette, a one off 10 minute task, and you’re done.
*never say never, but I can’t see why it would.
i may have misread the OP, but i thought what he wanted was to put a 12sp bike on his trainer. if he wanted to put his older bike on the trainer, there’s no question here, he just puts the 11sp bike on the trainer that already has an 11sp cassette. hence the answer i gave. but, again, perhaps i misread or misunderstood the question.
Alot of people run the 12 speed chain on their 11sp bikes because it lasts longer and is quieter. So if you use ERG mode, you definitely don’t need to change the cassette on your trainer.
Thee are 12 speed conversions for mechanical 11 speed groupsets. Would be interesting to see if it works with the Shimano 12 speed cassettes
Duncan74 nailed it. I guess I could have been less ambiguous. Sounds like I may be able to keep the 11sp cassette on the kickr and use erg mode.
Duncan74 nailed it. I guess I could have been less ambiguous. Sounds like I may be able to keep the 11sp cassette on the kickr and use erg mode.
Yes, I think too erg mode is the way to go. On our two smart trainers we still have 10 speed cassettes and often using them with 11 speed bikes.
Anyway, it is a shame that with all this gadgets one gets with modern electric shifting there still is no software way to adjust for different number of speeds.
Duncan74 nailed it. I guess I could have been less ambiguous. Sounds like I may be able to keep the 11sp cassette on the kickr and use erg mode.
Yes, I think too erg mode is the way to go. On our two smart trainers we still have 10 speed cassettes and often using them with 11 speed bikes.
Anyway, it is a shame that with all this gadgets one gets with modern electric shifting there still is no software way to adjust for different number of speeds.
There probably is. But there’s no benefit to the manufacturer to provide it - they sell more kit and make stuff obsolete more this way.
There was a change at 11 speed on road bikes. The derailleurs are different.
I cannot comment on 12 speed.