Cassette Question

[Greydog]

Hi all, I am looking to lighten my Yamaha Civante as much as possible while upgrading componentry to get smoother shifting. My question is, can I swap out a 10spd Tiagra Cassette for a 10spd 105 or Ultegra? The Brifters are Tiagra. I would also swap out the Tiagra rear derailleur for a 105 10spd and possible the crank set which is a SAMCX for a 105 if possible. Seat post, saddle and tires are among other parts that will be replaced.


Thanks,

Larry

 

[Oski1997]

Hi all, I am looking to lighten my Yamaha Civante as much as possible while upgrading componentry to get smoother shifting. My question is, can I swap out a 10spd Tiagra Cassette for a 10spd 105 or Ultegra? The Brifters are Tiagra. I would also swap out the Tiagra rear derailleur for a 105 10spd and possible the crank set which is a SAMCX for a 105 if possible. Seat post, saddle and tires are among other parts that will be replaced.


Thanks,

Larry

The 105s are now only made in 11-speed. So you’d have to get the ?6-yr? Old 105s. Whichever older model Shimano made in the 10-speed for both the cassette and rear derailleur. You definitely can’t use the Ultegra cassette because those aren’t available in 10-speed. Let me know if you find a website selling these 105 10-speeds bc I am interested in those. They won’t be available with time (because they’re discontinued) so I’d like to buy them now and save them to use in the future.

 

[Greydog]

There are plenty of 105 10 speed cassettes available from multiple online stores and Amazon.

Shimano05 CS-57000 Speed Cassette | Jenson USA

www.jensonusa.com

Shimano CS-5700 105 HG 10sp Cassette

Shimano CS-5700 105 HG 10sp Cassette :: From $34.99 :: Shimano 10 Speed Cassettes

www.universalcycles.com

And here is an Ultegra

Shimano Ultegra CS-67000SP Cassette | Jenson USA

www.jensonusa.com

Shimano CS-6700 Ultegra HG 10sp Cassette

Shimano CS-6700 Ultegra HG 10sp Cassette :: From $49.99 :: Shimano 10 Speed Cassettes

www.universalcycles.com

 

[Oski1997]

There are plenty of 105 10 speed cassettes available from multiple online stores and Amazon.

Shimano05 CS-57000 Speed Cassette | Jenson USA

www.jensonusa.com

Shimano CS-5700 105 HG 10sp Cassette

Shimano CS-5700 105 HG 10sp Cassette :: From $34.99 :: Shimano 10 Speed Cassettes

www.universalcycles.com

And here is an Ultegra

Shimano Ultegra CS-67000SP Cassette | Jenson USA

www.jensonusa.com

Shimano CS-6700 Ultegra HG 10sp Cassette

Shimano CS-6700 Ultegra HG 10sp Cassette :: From $49.99 :: Shimano 10 Speed Cassettes

www.universalcycles.com

The 105 is 11-25. Ours is 11-32T. Will this work?

 

[Greydog]

Yes it will but if you look at the pull down tabs or scroll down you will see that they have 11-28. I think the largest that they came in was 11-30. It just means you will have a narrower range of gears. Personally, I prefer a narrow range as it allows you to find a comfortable cadence when in the middle gears. I am never going to use a 30T on an ebike unless I was doing mountains. If you search you might be able to find an 11-30T. I run an 11-28 on my current bike and I could go even smaller since I have a triple crank. My son runs 11-26 on his road bike.

By the way, talk to your LBS and see if you may need a spacer with the 105 or Ultegra 10 spd cassettes. I think you might from what I have read but I am not sure. I am going to buy the 105 but I have to talk to my shop.

 

[Oski1997]

Yes it will but if you look at the pull down tabs or scroll down you will see that they have 11-28. I think the largest that they came in was 11-30. It just means you will have a narrower range of gears. Personally, I prefer a narrow range as it allows you to find a comfortable cadence when in the middle gears. I am never going to use a 30T on an ebike unless I was doing mountains. If you search you might be able to find an 11-30T. I run an 11-28 on my current bike and I could go even smaller since I have a triple crank. My son runs 11-26 on his road bike.

I use all of my gears so I don’t think that will work for me but thanks for the info.

 

[Oski1997]

If you are willing to go 11 speed or 12 speed, there are light weight options available.

40.6US $ 30% OFF|2022 Ultralight Road Cassette 11v Cassette Slr2 Cassette 11 Speed Cassette 28/32/34/36t Freewheel 11v K7 Cnc Gravel Hg System - Bicycle Freewheel - AliExpress

Smarter Shopping, Better Living! Aliexpress.com

www.aliexpress.com

107.0US $ |Road SLR2 Flywheel Ultralight 11 Speed 11 25/32T CNC Bike Freewheel 11s Flywheel K7 11V Sprocket For Shimano R9100 SRAM RED|Bicycle Freewheel| - AliExpress

Smarter Shopping, Better Living! Aliexpress.com

www.aliexpress.com

56.7US $ 30% OFF|Ryet 12 Speed Cassette Road Bike 11-28t/32t/34t Ultralight Cnc 12s Sprocket Freewheel For12v Slr Hg Cassette 12s Road Cassette - Bicycle Freewheel - AliExpress

Smarter Shopping, Better Living! Aliexpress.com

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125.4US $ |2021 Sroad SLR2 Rainbow Cassette Ultralight 11 Speed 11 25T Bike Freewheel 11s Sprocket For Shimano 11 Speed cassette Groupset|Bicycle Freewheel| - AliExpress

Smarter Shopping, Better Living! Aliexpress.com

www.aliexpress.com

Yamaha says the motor’s software was tuned to be used by a 10-speed cassette. I know Giant’s software is tuned to be used by an 11-speed. But Giant uses the more powerful PWX-2 Yamaha motor. I know more gears help us use less watts bc we can peddle at higher cadences which makes climbs easier. Maybe an 11-speed on our software wouldn’t allow us to be in the “sweet spot” for optimal motor support (which I think is between 70-80 cadence). I also know that our software was tuned to help us get to 28mph at any gear when we approach a cadence of 100. Other guys on here know more about this motor science than I do. What are your thoughts?