LTWOO ER9 & ERX - Electronic groepsets

[kbernstein]

eR9 without box or battery is $514 https://www.aliexpress.com/item/1005005666489670.html

How? $617 with  $64 shipping for me

[pmark]

How? $617 with  $64 shipping for me

It shows up as £415 inc shipping for me, which is a very tempting price.  As a comparison, 105 R7020 full groupset is £440 in the UK. 

I would double check which currency/location you have selected.

[TidyDinosaur]

How? $617 with  $64 shipping for me

The 514 is excl. Vat and tax. So it will get quite a bit more expensive in the EU indeed...

[jonathanf2]

The only difference between the ER9 and ERX is basically the carbon shifters and a carbon cage? If that's the case, you can pocket the difference and find other areas to cut weight on the bike. Also does anyone know if you can swap the pulley cage for an OSPW on the ERX rear derailleur?

[strayan_rice_farmer]

I DM'd the Aliexpress store rep and they weighed two sets for me.
1510g for eR9
1500g for eRX

note he has all the packaging and cables on the scale + caveats about scale calibration.

Interestingly this would mean that the price difference between eR9 and eRX is essentially a CarbonFiber tax.

[kbernstein]

Absolutely no way the difference is only 10 grams.  Wasn't there 90 grams of difference between RX and R9 (non electronic)?
Carbon tax is a thing but if there is so little difference I don't see anyone informed buying ERX again. The seller must have forgotten the battery or something
Somebody had a concern for ER9 being software locked to 11 speed, was it confirmed it can do 11 and 12 speed?
Also, why is this thread in the Road bike section when the R9/RX thread is in the components section?

[Serge_K]

i think i posted on this thread before the weight difference. Marketing materials from L-twoo attached.
Er9 is not locked to 11s.

[strayan_rice_farmer]

i think i posted on this thread before the weight difference. Marketing materials from L-twoo attached.
Er9 is not locked to 11s.

55g difference between the two... not much in it.
Looks like the exact same components - material change for levers and cage.

[TidyDinosaur]

55g difference between the two... not much in it.
Looks like the exact same components - material change for levers and cage.

And more risk of the levers braking when you fall...

[jonathanf2]

55g difference between the two... not much in it.
Looks like the exact same components - material change for levers and cage.

55g only? For the money saved, you can cut weight on other aspects of your bike (saddle, titanium bolts, bottle cages, drop bars, etc.) Though I have to admit, carbon levers feel nice.

[boxof13]

I pulled the trigger and ordered eR9. Along with many of you, I agree that $150 might not be worth the ~55g weight reduction. I can easily save that weight from other reasonable components. Including tax and Aliexpress coupon code, I got the set for ~$530, which makes things very interesting. I plan on staying on 11 speed so that I don't have to upgrade my relatively new cassette(s) that I bought for my bike and trainer.

I have to admit that the price of 105 Di2 is also very tempting. I had seen listing on Aliexpress ~$850 for an almost complete groupset (excluding rotors), which are no longer available. But accounting for shipping and tax, the overall upgrade cost for 105 Di2 is still much higher vs eR9, especially for someone like me who only needs to upgrade the shifter and derailleur combo.

I will try to give an update whenever I get them on my hands and do some testing. I am now eagerly waiting for them to arrive and install them on my bike.

[varialflip]

Has anyone noticed that the iOS app changelog states that they added 10-12speed fonction to eRX?
It would become a very interesting option for those with a itch to upgrade to electronic+hydro but who are happy with their 10sp groupset.

[StiffWeenies]

Has anyone noticed that the iOS app changelog states that they added 10-12speed fonction to eRX?
It would become a very interesting option for those with a itch to upgrade to electronic+hydro but who are happy with their 10sp groupset.

Just thinking aloud here

Firmware permitting, you could pair a Rotor 10-36T 13s cassette (designed for KMC X12 chain) with 46/36 CX chainrings to hodgepodge yourself a 2x13 setup

The 32T advertised max RD handles 34T just fine so 36T isn't out of the question, especially with the help of a RoadLink DM

The cassette itself is the same as Rotor's 11-36T 12s cassette but with an extra 10T and needs to be mounted on its own proprietary hub (basically an extended HG)

[jonathanf2]

Just thinking aloud here

Firmware permitting, you could pair a Rotor 10-36T 13s cassette (designed for KMC X12 chain) with 46/36 CX chainrings to hodgepodge yourself a 2x13 setup

The 32T advertised max RD handles 34T just fine so 36T isn't out of the question, especially with the help of a RoadLink DM

The cassette itself is the same as Rotor's 11-36T 12s cassette but with an extra 10T and needs to be mounted on its own proprietary hub (basically an extended HG)

Wouldn't the firmware still need to be programmed to shift 13 cogs? It almost seems more feasible to use either an 11 or 12 speed 11-36t cassette. If 10 speed is doable as well, there are plenty of 11-36t options from Shimano, Sunrace and even Microshift. Unless you really want 13 speeds for more cadence options? Also has anyone been able to confirm if Roadlinks would fit on the ERX/9 RD?

[StiffWeenies]

It's very much a hypothetical situation, but which other groupset maker would dare to experiment with 2x13 function if not L-TWOO? the big boys are more known for removing functionality as opposed to adding

Another cassette option could involve taking a Shimano 11-34T 12s and slotting a Y0MV16100 16T and Y0MV40021 or Y0NR00200 Spacer B between the 15T and 17T cogs, but I doubt it'd work right with the Rotor hub