Electronic & Hydraulic Shifting (Di2, Ui2, customisations)

It's what, 100g or so? Not insignificant.

I'm certain you would notice the difference on a reasonably light bike whether it's mounted in the seatpost or the bottom of the seat tube; with the battery low the bike would feel lighter when you stand on it and throw it from side to side.

That's why I like unpadded seats.

Minor FD rub in 1st gear can be considered a feature in the absence of a gear display; stops you imagining you have a lower gear than first and experiencing the misery of trying to shift to it...

Anyone on SRAM mechanical knows how much that can suck: forgot you were in first? Here, have second!

Isn't the weight more or less the same as a Garmin? I can honestly say I can't notice any difference in how a bike handles with a Garmin on or off....

Lol. This exactly what I thought of too.
I posted a letter yesterday that weighed 89 grams, would like to see someone able to detect it taped to the seatpost in a blind test…

I'm getting a very slight chain rub on the front mech when I'm the lowest gear.

Have you utilized the tension screw? (that presses against the seat tube)
I'd back off the screw, angle the FD inboard a little and then use the tension screw to push the cage to a little less than parallel with the chainrings.

I couldn't work out what that screw did!
Shimano tech docs weren't that clear.

I did give it a turn but didn't seem to change anything so I turned it back to avoid messing everything up.

I might explore it a bit more when I'm back next week.

Would buying an old Di2 6770 groupset be a bad idea? Would it be more hassle than its worth?
The stuff I have my eye on is apparently a full groupset with a fucked rear derailleur that needs replaced to get the system working.
I checked ebay and there aren't any 6770 rear derailleurs for sale right now. Are ones that are working a rarity?

I checked ebay and there aren't any 6770 rear derailleurs for sale right now. Are ones that are working a rarity?

Yes. Hen's teeth with a side order of rocking horse shit doesn't come close. You can use the levers with more modern kit, and the cables, but the FD is a paperweight.

ah ok thanks. So I'd need a 6870 RD and FD to get it all working, doesn't seem as economical if thats the case :(

In the past I've picked up 6870 mechs pretty cheaply off eBay. No idea what the going rates are like now in the new normal though.

This might be relevant to some of you Di2 people
https://www.bikehugger.com/posts/shimanos-epic-fail-with-hammerhead/

Has anyone bought these AliX tiny handmade etap blips?

I like how neat under the tape they are compared to real blips

AliX reviews seems positive, anyone here got them?

Does anyone on be know much about compatibility for AXS parts?

Looking at using an Eagle AXS rear mech but with the 12 speed 10/44 road cassette and an 11 speed Force CX1 crankset and chainring.
Would it work with the 12 speed Eagle chain or will the 12 speed SRAM road cassettes only work with the flat top chain?
I’ve been using the Eagle 10/50 cassette with a 12 speed chain on the Force chainring with no issues.

It will probably work, but not at it's best. You won't be able to adjust the b-screw properly to get nice (for SRAM) shifting.

Does anyone think you wouldn't notice 150g off a saddle? At some point it gets hard to notice, but combined with another such saving in the cockpit, you notice it.

Bikes that feel light are fun to ride. They don't have to be absolutely light, just light in the right places and decent enough in the rest.

My 6.1kg weapon with its 1080g wheelset feels like such a fucken beast. Always ride it hard.

Have you heard of the weight weenies forum? I think it will be right up your strasse…

I guess there are two camps, those who think lighter equals better in all respects and those who prefer durability and stiffness. I think we are in opposing camps here.

Neko Mullaly (sp?) made an interesting comment on one of his recent videos.

He had been testing components for weight- had even taped bottles of water to the frame to move the centre of gravity around.

Said (of the components) he couldn’t feel the lighter weight, but he could feel the drop in performance of the lighter parts.

There are things you can measure but not feel, and things you can feel but not measure (in the sense of the measurement resolution of performance parameters). If you're riding for sensation, do things which feel better. If you're racing, do things which make you faster.

I've got 6770 on the wife's bike and though it all works, I wish to do a spot of upgradin', to give her synchro-shifting. I'm looking at 8050 derailleurs but can I get away with keeping the 6770 shifters? I don't think it makes much difference whether it's run as 10- or 11-speed. I already have BT-DN110 internal battery and SM-EW90A, so I think it should work but I would just like to be sure before I start splashing out moolah
Also I have the SM-BCR2 Charger but not SM-PCE2. Do I need the latter to do the setup?

https://bike.shimano.com/content/dam/e-tube/assets/images/contents/project/compatibillity/pdf/en/HM-CC.3.4.3-00-EN.pdf

I'm looking at 8050 derailleurs but can I get away with keeping the 6770 shifters?

Yes, it'll be fine. I use 6770 shifters with 11 speed 6870 derailleurs on one bike.

Also I have the SM-BCR2 Charger but not SM-PCE2. Do I need the latter to do the setup?

No.

Yeah I know WW.

Lighter is better in most respects as long as it's not too light. Which is why my bike has a heavier stem on it than it used to have.

We've got some pretty good materials these days you know... To get to 6.1kg, I just needed Dura-Ace and tubulars; the only real weenie part is a billet cassette.

Mind you, this is on a 2006 frame, from before the Tainting. Now, $10000 bikes weigh 7.8kg and apparently that's fine with people, but those fiddly aero hybrids aren't for me.

I got my 2015 Supersix HM down to 6.6kg once, without any exotic parts, and it was terrifying not knowing what might snap or creak next. Like Buckaroo in bike form.

It now weighs 7.4kg and I cannot tell the difference in weight when riding it, but it feels considerably stronger and faster

Aero bikes are measurably faster, even if they don’t feel faster.

The faff of integrated and hidden cables is a pain though.

I have a Specialized SL6 rim brake, one of the easiest to live with aero/lightweight bikes.