LTWOO RX hydro sets

[00Garza]

You could use the RX shifters with an GRT or GR9 mech.

[raisinberry777]

I'm confused here.
Does ltwoo have a hydraulic, non electronic, road, 2x11 or 2x11 groupset, without the campagnolo type thumb shifter? If so, how is it called, how much is it, and where to get it?
And is it any good?

No. L-Twoo's mechanical hydraulic groupsets all have the Campagnolo style thumb shifter.

Those too have issues - see dsveddy's teardown here of his broken one:

I've done a teardown of my broken LTWOO brifter to see what's inside. I have the part-1 video up right now on youtube. Interesting finds include that the hydraulic reservoir is a modular part that pops right out.

(What's inside a L-TWOO hydraulic lever? Teardown & anatomy of a failure)

[mirphak]

My ltwoo Rx worked basically ok, but I found a few annoying  bits  and ended up swapping it for a sensah teampro hrd 12s + GRX front and back.

- the screw on the back of the shifters that controls the engagement of the ratchet in the lever got a bit loose after a year and a half and started misbehaving while going up the casette. Could be corrected but a little annoyance.
- the rear derailleur has a buttery spring. They should have chosen a more robust one for sure.
- the same rear derailleur requires a change in pulleys to work well. Not optional, the stock ones were plain useless
- in the same rear derailleur... The b-screw is just cosmetic, it does nothing. Come one...
- the design of the brake calipers works, but it is absurdly weird, heavy and complex, and you end up having to adjust 4 screws (one of which very hard to access ... Annoying if it gets loose).

[damadori]

Hello folks,

I am a new user from Italy.

Recently I bought on Ali-Express an L-Twoo R9 groupset of the 2024 series, thinking new=better. The new version has a different coloring (something like silver with rainbow reflections):

https://it.aliexpress.com/item/1005007432346737.html?spm=a2g0o.productlist.main.25.771068cbXCs4Oq&algo_pvid=247663ae-ecd0-4b4d-9c1f-348c3f4f8a82&algo_exp_id=247663ae-ecd0-4b4d-9c1f-348c3f4f8a82-12&pdp_npi=4%40dis%21EUR%21123.91%2169.39%21%21%21953.89%21534.18%21%40211b653717264288211467781e537f%2112000040735705120%21sea%21IT%212049104610%21X&curPageLogUid=pJavcjsVlVXW&utparam-url=scene%3Asearch%7Cquery_from%3A

Now, I am a big Campy fan (but my wallet isn't), in particular for the ergonomics of the egropower shifters (call me fool) and this is the reason why I wanted to give L-twoo a shot.

I went for the R9 cause I have the feeling that 12 is better off on electronic shifters, and the new R9 brifters + derailleurs came in at an incredible 98 euros which sounded like an absolute bargain.

Sadly, when the package arrived I found out that the levers don't have continuous shifting: the lever can shift max 2 gears at a time and the thumb lever just one. I have the feeling the new RX works in the same way.

Has anyone had the same experience? Any reasons for that? I wonder if they finally "found out" they were breaking some Campy patents there and had to change strategy. Also, I see that many of the Ale-Express sellers that still sell the previous version of RX and R9 don't sell to Italy, which is very strange imho, as they sell in all other EU countries... And, coincidence, Campy is Italian....

Cheers

[00Garza]

Hello folks,

I am a new user from Italy.

Recently I bought on Ali-Express an L-Twoo R9 groupset of the 2024 series, thinking new=better. The new version has a different coloring (something like silver with rainbow reflections):

https://it.aliexpress.com/item/1005007432346737.html?spm=a2g0o.productlist.main.25.771068cbXCs4Oq&algo_pvid=247663ae-ecd0-4b4d-9c1f-348c3f4f8a82&algo_exp_id=247663ae-ecd0-4b4d-9c1f-348c3f4f8a82-12&pdp_npi=4%40dis%21EUR%21123.91%2169.39%21%21%21953.89%21534.18%21%40211b653717264288211467781e537f%2112000040735705120%21sea%21IT%212049104610%21X&curPageLogUid=pJavcjsVlVXW&utparam-url=scene%3Asearch%7Cquery_from%3A

Now, I am a big Campy fan (but my wallet isn't), in particular for the ergonomics of the egropower shifters (call me fool) and this is the reason why I wanted to give L-twoo a shot.

I went for the R9 cause I have the feeling that 12 is better off on electronic shifters, and the new R9 brifters + derailleurs came in at an incredible 98 euros which sounded like an absolute bargain.

Sadly, when the package arrived I found out that the levers don't have continuous shifting: the lever can shift max 2 gears at a time and the thumb lever just one. I have the feeling the new RX works in the same way.

Has anyone had the same experience? Any reasons for that? I wonder if they finally "found out" they were breaking some Campy patents there and had to change strategy. Also, I see that many of the Ale-Express sellers that still sell the previous version of RX and R9 don't sell to Italy, which is very strange imho, as they sell in all other EU countries... And, coincidence, Campy is Italian....

Cheers

I think only the hydro versions have the multi shift ability. It looks like the mechanical shifter is the older shifter style with just new button.

[00Garza]

I DNF'd a gravel event a couple weeks ago because my rear ltwoo brake was dragging pretty bad. Not sure how to explain it, but whenever its warm outside the pistons seem to push in on their own. If I give the levers a few good squeezes it goes back to normal for a little while, but slowly starts pushing in again to the point where it barely gets a few rotations when I spin the back wheel.

I hadn't noticed because my training rides had all been early morning when its still relatively cool out (south texas). Gravel event started at 8:30 and by 10 it was over 90 degrees fahrenheit. I was puzzled when my watt output didn't seem to match my speed at all. When I stopped I realized how bad it was.

Local shop tried a bleed and didn't help. They were wanting to tear it apart to see if something is wrong in the master cylinder, but I told them to not bother as I have some GRX calipers on the way.

[damadori]

I think only the hydro versions have the multi shift ability. It looks like the mechanical shifter is the older shifter style with just new button.

I have bought the hydraulic version and unfortunately it really seems that they removed the multi-shift capability on the thumb trigger. The index lever shifts up to 3 at a time, but the thumb lever just one.

I DNF'd a gravel event a couple weeks ago because my rear ltwoo brake was dragging pretty bad. Not sure how to explain it, but whenever its warm outside the pistons seem to push in on their own. If I give the levers a few good squeezes it goes back to normal for a little while, but slowly starts pushing in again to the point where it barely gets a few rotations when I spin the back wheel.

I hadn't noticed because my training rides had all been early morning when its still relatively cool out (south texas). Gravel event started at 8:30 and by 10 it was over 90 degrees fahrenheit. I was puzzled when my watt output didn't seem to match my speed at all. When I stopped I realized how bad it was.

Local shop tried a bleed and didn't help. They were wanting to tear it apart to see if something is wrong in the master cylinder, but I told them to not bother as I have some GRX calipers on the way.

What calipers do you use? L-twoo or Zrace?

[00Garza]

I have bought the hydraulic version and unfortunately it really seems that they removed the multi-shift capability on the thumb trigger. The index lever shifts up to 3 at a time, but the thumb lever just one.

What calipers do you use? L-twoo or Zrace?

The link you shared was the mechanical, not hydraulic. Or you mean you also bought the hydro version?

I was using the Ltwoo calipers. They probably just needed a bleed, but I replaced them with GRX calipers since I got a good deal on them.

[damadori]

The story is the following: by mistake I bought the mechanicals (as the new one look exactly the same and there was not explicit mention of them being mechanical), I sent them back and bought the hydraulic ones. The only difference in therms of shifting is that on the index lever the mechanical can shift up to two gears whereas the hydraulic can shift three. They both have a single click for the thumb lever. Thus, better to stick with the older version.

I bought the shifters standalone, then bought the derailleur in carbon version; I will use some ultegra calipers that I had left from another bike... I don't like the layout of the L-Twoo calipers with those weird supports...

[Bigbobby1482]

The story is the following: by mistake I bought the mechanicals (as the new one look exactly the same and there was not explicit mention of them being mechanical), I sent them back and bought the hydraulic ones. The only difference in therms of shifting is that on the index lever the mechanical can shift up to two gears whereas the hydraulic can shift three. They both have a single click for the thumb lever. Thus, better to stick with the older version.

I bought the shifters standalone, then bought the derailleur in carbon version; I will use some ultegra calipers that I had left from another bike... I don't like the layout of the L-Twoo calipers with those weird supports...

Are you sure you can do that? The ltwoo shifter seems to use the BH-59 hose which is bigger than the BH-90 that Ultegra calipers accept? Or are they cross compatible?

[damadori]

Hi, as far as I know the hose sizes are interchangeable. You need the correct barb and olive but the hose size does not matter for the connection with the caliper and the lever.

[00Garza]

So some new listings of GR9 says max tooth capacity is 50t, but no multi shifting. I guess we’re on to a new version.

And some are claiming 52t!

[Rebel_Yell]

Is there a consensus on which crankset and cassettte work with the RX or ERX?

[Lewis_Stewell]

Is there a consensus on which crankset and cassettte work with the RX or ERX?

FWIW I went with the Senicx crankset on my RX and it looks and seems very high quality. https://www.aliexpress.us/item/3256805631093003.html (Unfortunately we're into the tariff/end-of-de-minimis pricing so it's now nearly double what I paid)

[raisinberry777]

Seems to have been completely missed by the YouTubers (perhaps because no one cares about mechanical any more?) but a mechanical GRT13 groupset was visible in Trace Velo's video from Shanghai Bike Show.