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Re: Chinese gear that measure the power output of both legs in watts? Spider based power meters are really not good at estimating left/right balance.
They can't differentiate between power the left side pulling and right side pushing, and vice versa.

I tested this several times, for instance you can unclip your left leg and cycle only with your right leg.
The L/R balance should be 0% / 100% (and my Favero Assioma pedals confirm that)... but the spider based power meter will estimate the L/R power based on how much pulling up you do with the right leg, and assign that to left side power, and pushing down with the right leg will be assigned to right side power. So it is basically useless.

Only crank based or pedal based power meter can accurately measure L/R balance.
December 26, 2023, 08:30:56 AM 		1
Re: Chinese gear that measure the power output of both legs in watts? It matters quite a lot.

In my case my left leg was always "a bit lazy".
When I try to do single leg drills, right leg is very smooth, but left one feels like pedaling squares.

On my Assiomas measured L/R balance is 45/55 (also confirmed on friends Garmin Vectors).
But spider based power meter reports L/R balance at 53/47.
I assume that because my left leg does almost no pulling, and right one does some, the interpretation is completely wrong in the end.

So yeah, L/R estimation on anything that is not pedal or crank based, is completely useless.
December 26, 2023, 12:48:05 PM 		1
Re: Chinese gear that measure the power output of both legs in watts? Its not so much about "pulling" as it is just unloading the pedal on the way up.
I find it quite natural on the right side, I don't have to even think about it.
Sometimes when I ride a bike with flat pedals I notice that my right leg gets a bit of "air time" on the upstroke.
But the left leg was never like that. No injuries, no conditions, same leg length... its just "lazy". :)
December 28, 2023, 12:44:31 PM 		1
Re: LTWOO TX or other cheap 12sp MTB derailleurs I fitted Ltwoo TX 1x12s on my 2017 Canyon Spectral.
Upgrading from 1x11s SRAM GX.

I combined it with 9-50T ZTTO ULT cassette and YBN 12s chain.

Shifting performance itself is good, I can't say its any worse than GX.
It is reliable, predictable, shifts OK under load.
Indexing is good, easy to setup.

Quality of the components seems good.
The only thing that is a bit "iffy" is the cable guide on the derailleur, it is plastic and looks like it could break easily if something would hit the derailleur. Will see how it holds up...

What bothers me is the ergonomics of the levers, GX has much nicer position of the levers.
On TX you have to place your finger in a bit weird position to shift.

I did not experience any chain drops so far, but I do not run extremely aggressive trails.
My riding is mostly XC.
May 04, 2024, 03:58:32 PM 		1