Eagle eTap

Discuss light weight issues concerning mountain bikes & parts.

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Lelandjt
Posts: 421
Joined: Tue Jan 19, 2016 7:10 am

by Lelandjt

cassard wrote:
Mon Mar 26, 2018 8:01 pm
I'm not a programmer or anything, but the way I see it, is either it's going to be compatible with the road shifters for bigger cassette and SRAM could simply offer a firmware update for the road etap derailleur for 12 speed in the future.
Well, where does the "brain" reside in etap? With Di2 it's in the battery. I suspect it's in the derailleurs with etap in which case the shifter doesn't know if it's operating 11 or 12 speed or which derailleur it's commanding. It's just sending a signal to the derailleur to go up or down. So what I'm saying is this derailleur should work with 11spd road shifters unless Sram specifically made it so they won't get along. I don't think they'd do that.

Ritxis
Posts: 240
Joined: Fri Jun 01, 2012 3:00 pm
Location: San Sebastian

by Ritxis

Lelandjt wrote:
Tue Mar 27, 2018 12:57 am
cassard wrote:
Mon Mar 26, 2018 8:01 pm
I'm not a programmer or anything, but the way I see it, is either it's going to be compatible with the road shifters for bigger cassette and SRAM could simply offer a firmware update for the road etap derailleur for 12 speed in the future.
Well, where does the "brain" reside in etap? With Di2 it's in the battery. I suspect it's in the derailleurs with etap in which case the shifter doesn't know if it's operating 11 or 12 speed or which derailleur it's commanding. It's just sending a signal to the derailleur to go up or down. So what I'm saying is this derailleur should work with 11spd road shifters unless Sram specifically made it so they won't get along. I don't think they'd do that.
Same is not so easy, to move from 11 to 12 the limitation will be in the engine of change, will not be a thing of firmware.........

by Weenie


martijnv4
Posts: 3
Joined: Sun Apr 01, 2018 5:09 pm

by martijnv4

Lelandjt wrote:
Tue Mar 27, 2018 12:57 am
cassard wrote:
Mon Mar 26, 2018 8:01 pm
I'm not a programmer or anything, but the way I see it, is either it's going to be compatible with the road shifters for bigger cassette and SRAM could simply offer a firmware update for the road etap derailleur for 12 speed in the future.
Well, where does the "brain" reside in etap? With Di2 it's in the battery. I suspect it's in the derailleurs with etap in which case the shifter doesn't know if it's operating 11 or 12 speed or which derailleur it's commanding. It's just sending a signal to the derailleur to go up or down. So what I'm saying is this derailleur should work with 11spd road shifters unless Sram specifically made it so they won't get along. I don't think they'd do that.
The rear deailleur is acting as master in an etap setup, my guess is that the rear derailleur is where the brain resides.

Datmo
Posts: 45
Joined: Sat Sep 23, 2017 7:55 am

by Datmo

I don’t expect the “Eagle eTAP” derailleur to be compatible with road shifters any time soon because I’m sure SRAM would like to release SRAM Force eTAP first.

Ritxis
Posts: 240
Joined: Fri Jun 01, 2012 3:00 pm
Location: San Sebastian

by Ritxis

Yesterday, Nino out......Eagle eTap fail??
nino.jpg

TurboKoo
Posts: 447
Joined: Wed Oct 29, 2008 7:55 pm

by TurboKoo

The chain seems to be on so my guess would be that RD is dead
Scott Foil
Shimano 9150
Shimano FCR-9100-P
Shimano C60 tubulars

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