9150 is actually lighter than eTap for most of us.

Discuss light weight issues concerning road bikes & parts.
gurk700
Posts: 240
Joined: Fri Jan 20, 2017 7:40 pm

by gurk700

I'm sure a lot of people realize this and / or don't care out of preference but as someone who noticed this wayyyy later, I thought I'd share my findings.

A lot of weight weenies (not all) use a non sram or shimano crankset, 3rd party bottom bracket and eebrakes or similar.

I recently built my SL6 with eTap but after sourcing the only missing part of my 9150 group (shifters for rim brake) I decided to swap back to shimano. I didn't care about the weight difference as I thought it would add just a few grams but I actually ended up losing 20 grams on the setup.

For those of us who utilize only the below parts of a groupset, here's how it worked out:
Image

I was pleasantly surprised. It really shouldn't change your mind if you love eTap (i love both groups for different reasons) but thought I'd throw it out there for people too lazy for the math like I was :)

by Weenie


tonytourist
Posts: 1285
Joined: Sat Oct 10, 2009 7:13 am
Location: 93306

by tonytourist

eTap is lighter when the batteries fall off :smartass: :mrgreen:

Cemicar
Posts: 125
Joined: Mon Aug 21, 2017 7:40 am

by Cemicar

gurk700 wrote:
Wed May 01, 2019 10:12 pm
A lot of weight weenies (not all) use a non sram or shimano crankset, 3rd party bottom bracket and eebrakes or similar.
Your math seems to rely on this condition, but even with their respective cranksets, brakes and BBs, 9150 still can be lighter in some cases because...

- Shimano DM brake is lighter than Sram (your bike is SL6 isn't it)
- Quarq is heavier than Shimano PM if you regard PM as crankset

Imaking20
Posts: 1868
Joined: Fri Nov 18, 2011 5:19 am

by Imaking20

I agree with this set of components as the baseline for weight comparison... and didn't realize people still thought eTap was lighter than 9150! Actually closer in weight than I remember. Function though...
Current:
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Retired:
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gurk700
Posts: 240
Joined: Fri Jan 20, 2017 7:40 pm

by gurk700

Cemicar wrote:
Thu May 02, 2019 1:32 am
gurk700 wrote:
Wed May 01, 2019 10:12 pm
A lot of weight weenies (not all) use a non sram or shimano crankset, 3rd party bottom bracket and eebrakes or similar.
Your math seems to rely on this condition, but even with their respective cranksets, brakes and BBs, 9150 still can be lighter in some cases because...

- Shimano DM brake is lighter than Sram (your bike is SL6 isn't it)
- Quarq is heavier than Shimano PM if you regard PM as crankset
Yeah I’m sure there’s other combos. Was just going with my setup which I think is common enough. I had no idea about the DM brakes. I’ve had eebrakes for the longest time for both nonDM and DM setups.

gurk700
Posts: 240
Joined: Fri Jan 20, 2017 7:40 pm

by gurk700

Imaking20 wrote:
Thu May 02, 2019 5:11 am
I agree with this set of components as the baseline for weight comparison... and didn't realize people still thought eTap was lighter than 9150! Actually closer in weight than I remember. Function though...
I just see a lot of blanket statements like eTap is the lightest groupset after red 22 and the assumption that with the di2 battery + all the di2 cables (which is hard to come by an accurate weight listing for) duraace will be the heavier setup. I was actually shocked at how little all the wires + junction boxes weighed when all added up.

Anyway. Probably not the most informative post for everyone but might help a few idiots like myself :p

alcatraz
Posts: 2059
Joined: Mon Aug 29, 2016 11:19 am

by alcatraz

Bravo shimano. I'm a sram guy but I gotta give credit where credit is due. 230gr for a pair of shifters :thumbup:

It would be cool if sensors/computer/derailleurs all ran off the same battery. The computer also ought to be android with call functionality so we could leave the phone home. :D

gurk700
Posts: 240
Joined: Fri Jan 20, 2017 7:40 pm

by gurk700

alcatraz wrote:
Thu May 02, 2019 6:32 am
Bravo shimano. I'm a sram guy but I gotta give credit where credit is due. 230gr for a pair of shifters :thumbup:

It would be cool if sensors/computer/derailleurs all ran off the same battery. The computer also ought to be android with call functionality so we could leave the phone home. :D
ohhh computer from battery is interesting idea. most sensors are moving parts so not sure how that would be possible though.

tomtom
Posts: 72
Joined: Sun Oct 31, 2010 9:01 am

by tomtom

What cassette of DA is 209 grams? Not my 9000/9100 cassette's up till 11-28....
Canyon CF SLX Di2 2018
Canyon Aeroad CF SL Di2 Disc 2017
Canyon Speedmax CF Ultegra Di2 2015

dricked
Posts: 184
Joined: Tue Jan 09, 2018 1:57 pm

by dricked

My 12-28 DA 9000 cassette is

gurk700
Posts: 240
Joined: Fri Jan 20, 2017 7:40 pm

by gurk700

tomtom wrote:
Thu May 02, 2019 2:20 pm
What cassette of DA is 209 grams? Not my 9000/9100 cassette's up till 11-28....
DA 11-30 cassette is 209

KarlC
Posts: 926
Joined: Fri Dec 05, 2014 2:08 am
Location: San Diego Ca USA

by KarlC

gurk700 wrote:
Wed May 01, 2019 10:12 pm
I'm sure a lot of people realize this and / or don't care out of preference but as someone who noticed this wayyyy later, I thought I'd share my findings.

A lot of weight weenies (not all) use a non sram or shimano crankset, 3rd party bottom bracket and eebrakes or similar.

I recently built my SL6 with eTap but after sourcing the only missing part of my 9150 group (shifters for rim brake) I decided to swap back to shimano. I didn't care about the weight difference as I thought it would add just a few grams but I actually ended up losing 20 grams on the setup.

For those of us who utilize only the below parts of a groupset, here's how it worked out:
Image

I was pleasantly surprised. It really shouldn't change your mind if you love eTap (i love both groups for different reasons) but thought I'd throw it out there for people too lazy for the math like I was :)
How does Campy EPS V3 break down and stack up VS 9150 and eTap ?

.

gurk700
Posts: 240
Joined: Fri Jan 20, 2017 7:40 pm

by gurk700

KarlC wrote:
Thu May 02, 2019 4:08 pm
gurk700 wrote:
Wed May 01, 2019 10:12 pm
I'm sure a lot of people realize this and / or don't care out of preference but as someone who noticed this wayyyy later, I thought I'd share my findings.

A lot of weight weenies (not all) use a non sram or shimano crankset, 3rd party bottom bracket and eebrakes or similar.

I recently built my SL6 with eTap but after sourcing the only missing part of my 9150 group (shifters for rim brake) I decided to swap back to shimano. I didn't care about the weight difference as I thought it would add just a few grams but I actually ended up losing 20 grams on the setup.

For those of us who utilize only the below parts of a groupset, here's how it worked out:
Image

I was pleasantly surprised. It really shouldn't change your mind if you love eTap (i love both groups for different reasons) but thought I'd throw it out there for people too lazy for the math like I was :)
How does Campy EPS V3 break down and stack up VS 9150 and eTap ?

.
No idea! Would love to know.

saverin
Posts: 41
Joined: Wed Jul 02, 2014 7:02 pm

by saverin

Here are the weights of some of my EPS V3 setup and some claimed weights* for SR with your chain and cassette weight.

Rear Derailleur (SR11 EPS) - 198g*
Front Derailleur (SR11 EPS) - 127g*
Battery (EPS v3) - 136g
Brifters (SR11 EPS) - 263g*
cassette (yours) - 209g
chain (yours) - 249g
Interface (EPS V3) - 32g

total - 1213g

Note: Claimed weight for V3 battery is higher than my actual weight....so you could take 33g off this final number if you want to go with claimed weight.

by Weenie


gurk700
Posts: 240
Joined: Fri Jan 20, 2017 7:40 pm

by gurk700

saverin wrote:
Thu May 02, 2019 4:58 pm
Here are the weights of some of my EPS V3 setup and some claimed weights* for SR with your chain and cassette weight.

Rear Derailleur (SR11 EPS) - 198g*
Front Derailleur (SR11 EPS) - 127g*
Battery (EPS v3) - 136g
Brifters (SR11 EPS) - 263g*
cassette (yours) - 209g
chain (yours) - 249g
Interface (EPS V3) - 32g

total - 1213g

Note: Claimed weight for V3 battery is higher than my actual weight....so you could take 33g off this final number if you want to go with claimed weight.
Nice! With the 33g less on actual I think it would be pretty close enough. Going Campy would be tough for me with all the current wheels etc but I've learned to never say never!

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