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Old 12-21-17, 09:46 PM   #1
BabyCowHK
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Changing grip shifter to trigger shifter

Hi, I am currently using a pair of SRAM MRX 3x8 grip shifter on my foldie. The RD is a Sora 8/9sp. I want to replace the MRX to trigger shifter.

I will be replacing the 3sp left shifter with an SRAM shifter, but what is the best trigger shifter option for the Sora RD? Thanks for the help!
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Old 12-21-17, 10:42 PM   #2
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Why are you choosing a SRAM LH shifter? Why is the LH shifter the fulcrum this pivots about?


For a Shimano rear der the obvious choice is a Shimano (or S compatible shifter, which SRAM trigger rear shifters are not) shifter. The work around is a Shiftmate adaptor or other cable pull amount "translator".


So if the SRAM LH trigger is a must then either get a SRAM RH trigger unit and deal with the added cost/hassle of the adaptor of have a miss matched RH shifter by Shimano/Sun/Microshift.


If you want matching SRAM shifters then replace the Shimano rear der with a SRAM compatible one. Andy
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Old 12-21-17, 11:55 PM   #3
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I forgot to mention, the 3sp shifter is for the DD3 IGH. That's why I prefer to use SRAM LH shifter to avoid problems. My bike is a Birdy touring that came with SRAM DD3 IGH and Shimano 8sp cassette/Sora 8/9sp RD. Kind of a mix setup by default.

I don't mind having different shifters by using SRAM LH & Shimano RH together.

I've been searching but there are so many models out there. I am just not sure which one is the best for this 8sp setup.

Hope you guys can enlighten me a bit.

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Why are you choosing a SRAM LH shifter? Why is the LH shifter the fulcrum this pivots about?


For a Shimano rear der the obvious choice is a Shimano (or S compatible shifter, which SRAM trigger rear shifters are not) shifter. The work around is a Shiftmate adaptor or other cable pull amount "translator".


So if the SRAM LH trigger is a must then either get a SRAM RH trigger unit and deal with the added cost/hassle of the adaptor of have a miss matched RH shifter by Shimano/Sun/Microshift.


If you want matching SRAM shifters then replace the Shimano rear der with a SRAM compatible one. Andy

Last edited by BabyCowHK; 12-22-17 at 12:03 AM.
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Old 12-22-17, 12:11 AM   #4
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Ah so the plot thickens. Andy
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Old 12-22-17, 06:30 AM   #5
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Originally Posted by BabyCowHK View Post
I forgot to mention, the 3sp shifter is for the DD3 IGH. That's why I prefer to use SRAM LH shifter to avoid problems. My bike is a Birdy touring that came with SRAM DD3 IGH and Shimano 8sp cassette/Sora 8/9sp RD. Kind of a mix setup by default.

I don't mind having different shifters by using SRAM LH & Shimano RH together.

I've been searching but there are so many models out there. I am just not sure which one is the best for this 8sp setup.

Hope you guys can enlighten me a bit.
It's good that you told us that. That's not what I was visioning.

Assuming that you don't want to change your rear derailleur, you are going to want a Shimano trigger shifter. Count the number of rear cogs that you have and get a shifter that is an exact number match.
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Old 12-22-17, 06:37 AM   #6
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Google "8 speed Shimano trigger shifter"; this was my first hit and i is a good choice. I have the 7 speed version on two of my bikes.
https://www.amazon.com/Shimano-SL-M3.../dp/B003ZMH6IO
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Old 12-22-17, 03:02 PM   #7
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SRAM has made triggers that work with Shimano RDs. https://www.sram.com/sram/mountain/p...shifters#specs
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Old 12-22-17, 05:23 PM   #8
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Left, front? Friction thumb-shifter.. IMO.. ...
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Old 12-25-17, 07:55 AM   #9
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Ok, so I assume any Shimano 8sp trigger shifter that uses 2:1 pull ratio should do.

Thanks!
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Old 12-25-17, 12:33 PM   #10
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Originally Posted by BabyCowHK View Post
Ok, so I assume any Shimano 8sp trigger shifter that uses 2:1 pull ratio should do.

Thanks!
those go on the Right side if you have a Shimano RD get the 8 speed Shimano shifter..

if you act quickly * you might find the DD Dual control RH lever, but splitting up RH rear & LH Front, may be simpler


* because Sram Quit making the DD and all IGH, this year, so there will be no more made in 2018..





...

Last edited by fietsbob; 12-25-17 at 01:59 PM.
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Old 12-25-17, 01:09 PM   #11
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SRAM has made triggers that work with Shimano RDs. https://www.sram.com/sram/mountain/p...shifters#specs
Correct. As well as the Attack, the SRAM Rocket was also available in trigger and Gripshift versions, both with a 2:1 actuation ratio for use with Shimano derailleurs. I still run Gripshift 2:1 version Attacks and Rockets and they are superb.
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Old 01-01-18, 03:48 AM   #12
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Eventually got a pair of Attack trigger shifter. Let's see if it works, will let you guys know.
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Old 01-09-18, 11:06 AM   #13
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Got the LH with a DD3 specific shifter and RH with an Attack shifter. Works very well. Thank you guys!
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Old 01-12-18, 01:15 PM   #14
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Very good!
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Old 01-12-18, 04:43 PM   #15
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Looks good! I'm sure you will find that shifting is easier and more precise, especially if you're wearing gloves. I went from grip-shift to trigger-shift on my Dahon Mu XL shortly after it became my dedicated "winter" bike. Wearing lobster mitts, I never miss a shift with the trigger-shift compared to the almost random grip-shift.
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Old 01-14-18, 01:39 AM   #16
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Looks good! I'm sure you will find that shifting is easier and more precise, especially if you're wearing gloves. I went from grip-shift to trigger-shift on my Dahon Mu XL shortly after it became my dedicated "winter" bike. Wearing lobster mitts, I never miss a shift with the trigger-shift compared to the almost random grip-shift.
Steve
Yes! They did exactly what you mentioned. No more over/under/accidental shifting. It used to be really annoying when I grip hard for some speedy corner turn or on bumpy surface.

Now I have to solve that old mid-cog chain/cassette noise problem........
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Old 01-14-18, 01:59 AM   #17
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* because Sram Quit making the DD and all IGH, this year, so there will be no more made in 2018..

...
This is something I really hate to see as a consumer. Less choices for us. What's left in the market right now? Shimano and Rohloff?

Last edited by BabyCowHK; 01-14-18 at 03:46 AM.
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Old 01-14-18, 06:27 AM   #18
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This is something I really hate to see as a consumer. Less choices for us. What's left in the market right now? Shimano and Rohloff?
Sturmey Archer.
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Old 01-14-18, 10:53 AM   #19
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This is something I really hate to see as a consumer. Less choices for us. What's left in the market right now? S-A, Shimano and Rohloff?
They are Refocusing invested money, feeding the trendy 1 by 11 MTB market at Sram ,and, upper range road..

SRAM made its name with lawyers and bankers..

sued Shimano to get their grip-shifters, in the OEM build on new bikes..

and bought out Sachs of Germany.. a competitor , shippe everything to the Bicycle hub island, Taiwan.





....
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