Sensah Electronic Groupset (14 speed?)

[jonathanf2]

A few more photos of the shifter and derailleur in "exploded" view and another photo of the 14 speed cassette. Battery is confirmed removable, USB type-C charging and with a 1500km range (about 932mi). Launch date should be in the next 2 months. 

[Rebel_Yell]

A few more photos of the shifter and derailleur in "exploded" view and another photo of the 14 speed cassette. Battery is confirmed removable, USB type-C charging and with a 1500km range (about 932mi). Launch date should be in the next 2 months. 

Any word on possible cost?

[toxin]

Selectable cassette speed isn't a marketing tagline, it's basically a main feature over Shimano and SRAM. Being able to throw any speed cassette allows so much more freedom. I'm already running a mix of 11 and 12 speed groupsets with LTwoo electronic and can still use some of my older 10 speed cassettes if need be.

don't play dumb, the 14 speed thing is a marketing tagline. I have simply no confidence it will be good in practive. The 3 speed thing is also a marketing tagline, nobody will be running that.

[jonathanf2]

Any word on possible cost?

I'll try and find out through my contact if they don't announce it. Ballpark estimate should be similar to Wheeltop and LTwoo groupsets.

[Chiyou]

A somewhat fleeting look by Pandaman (China Cycling) from the Shanghai Bike Show (along with the usual assortment of the weird, wacky and wonderful):
https://www.youtube.com/watch?v=sb8y1Vp0md8 (groupset at 3:30)

[jonathanf2]

don't play dumb, the 14 speed thing is a marketing tagline. I have simply no confidence it will be good in practive. The 3 speed thing is also a marketing tagline, nobody will be running that.

Think outside the box. The applications for variable speed derailleurs go beyond just regular bikes. There are folding bikes, mini velos, commuters, cargo bikes, etc. that can benefit. A 3 speed cassette weighs less than 70g. A folding bike with no shift cables, 1x chainring and 3 speed cassette sounds pretty reasonable. If 14 speed cassettes are doable why not? No one is harping about SRAM going 13 speed, so what's the difference?

[toxin]

Think outside the box. The applications for variable speed derailleurs go beyond just regular bikes. There are folding bikes, mini velos, commuters, cargo bikes, etc. that can benefit. A 3 speed cassette weighs less than 70g. A folding bike with no shift cables, 1x chainring and 3 speed cassette sounds pretty reasonable.

fine w/e

If 14 speed cassettes are doable why not? No one is harping about SRAM going 13 speed, so what's the difference?

because sram are using direct mount UDH to expand get enough room to fit an extra cog on the outer side of the cassette, WITHOUT AFFECTING THE DIMENSIONS OF THE REST OF THE CASSETTE. 12sp was done the same way, adding a cog to the inside of the cassette, but there is no more room to add another cog there, and even if you could, it would make chainlines even worse than they already are.

So in order to make 14sp cassette for this derailleur, you would have to fit 2 more cogs inside the same width as a 12sp cassette. In order to aciheve that you have to:

• Tighten the spacing between the cogs, which would make shifting performance much more sensitive to imperfections in setup and require thinner chain plates, which would negatively impact chain durability,
• Make the cogs narrower. The reduced volume of material negatively impacts durability and gives you less room to work with to shape shifting ramps and worsening shifting performance

[kubackje]

don't play dumb, the 14 speed thing is a marketing tagline. I have simply no confidence it will be good in practive. The 3 speed thing is also a marketing tagline, nobody will be running that.

Jonathan posted a picture of a 14 speed cassette above. I'm curious how this will work.

[makl]

fine w/e
because sram are using direct mount UDH to expand get enough room to fit an extra cog on the outer side of the cassette, WITHOUT AFFECTING THE DIMENSIONS OF THE REST OF THE CASSETTE. 12sp was done the same way, adding a cog to the inside of the cassette, but there is no more room to add another cog there, and even if you could, it would make chainlines even worse than they already are.

So in order to make 14sp cassette for this derailleur, you would have to fit 2 more cogs inside the same width as a 12sp cassette. In order to aciheve that you have to:

• Tighten the spacing between the cogs, which would make shifting performance much more sensitive to imperfections in setup and require thinner chain plates, which would negatively impact chain durability,
• Make the cogs narrower. The reduced volume of material negatively impacts durability and gives you less room to work with to shape shifting ramps and worsening shifting performance

To be fair, Campagnolo managed a 13 speed cassette which works just fine without needing UDH (even works with 12-speed flattop chains). Apparently there's already a wheeltop(?) 14-speed cassette sold on complete builds, which seems to work fine as well (however, I think using a proprietary freehub body and a narrower hub design).

Since owning one, I'm a huge fan of 1-by drivetrains on race bikes. Using a 13-speed cassette, I'm really not missing anything! Gear spacing is no issue (at least with my 13 speed setup), and lowest ans highest gears are spot on. If there's a new option for that, maybe even with 14 cogs, that would be great in my opinion!

[raisinberry777]

For gearing alone, 1 bike to do both road and gravel is going to do both poorly.

Preach! I feel like this is rarely considered in terms of 'one bike to do it all', it's that you have to compromise on gearing one way or the other. Obviously this is different for everyone's preferences with gearing, but like you, I have a strong preference for 1x on gravel, but feel like 2x is still the better choice for road (on 12 speed at least). I wouldn't particularly enjoy my 1x gravel gearing on the road bike (especially since I'm on the 10-50 12 speed cassette), and I definitely hated having 2x on a gravel bike.