tryout of a mashup drivetrain
#1
Junior Member
Thread Starter
tryout of a mashup drivetrain
I was planning a 11 spd drivetrain upgrade for my flat bar Dahon Helios.
I have tried the Shimano R8000 rear derailleur with Shimano RS700 shifter, l but I really don't like the RS700. You have to push the lever very hard to shift.
Then I start to think if I can make use of an old Sram XO 9spd rear derailleur.
Because its cable pull ratio is as same as Shimano 11spd mtb, so I came up with an idea: try it with Shimano M7000 shifter.
In the end, surprisingly, this mashup works well! The shifting is actually pretty accurate and fast. And you don't need to push hard.
I suppose all similar mashups should also work.
That means, a combination of any of Sram X4/X5/X7/X9/X0 (8 or 9 spd) and any of Shimano m5100/m6000/m7000/m8000/m9000 (11spd) will run as a 11 spd system.
Bingo!
I have tried the Shimano R8000 rear derailleur with Shimano RS700 shifter, l but I really don't like the RS700. You have to push the lever very hard to shift.
Then I start to think if I can make use of an old Sram XO 9spd rear derailleur.
Because its cable pull ratio is as same as Shimano 11spd mtb, so I came up with an idea: try it with Shimano M7000 shifter.
In the end, surprisingly, this mashup works well! The shifting is actually pretty accurate and fast. And you don't need to push hard.
I suppose all similar mashups should also work.
That means, a combination of any of Sram X4/X5/X7/X9/X0 (8 or 9 spd) and any of Shimano m5100/m6000/m7000/m8000/m9000 (11spd) will run as a 11 spd system.
Bingo!
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#2
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Bikes: Trek 730 (quad), 720 & 830, Bike Friday NWT, Brompton M36R & M6R, Dahon HAT060 & HT060, ...
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Congratulations on the finding! I reckon though that this cage is carbon. I would not dare to put it on a full size bike, not to say about a folder. I had a Shimano RD, with an alu cage, for a number of years on a full-size bike and replaced it with an Sram, also with an alu cage. The latter snapped within 3 weeks or so. Since then, my Sram RD principle is that it is not going on a bike unless the cage is steel, either because it is low level enough, or I retrofitted a cage from a lower level, or I cut out the cage myself out of steel.
#3
Hello
Me thinks you just want to show off your handsome bicycle. Very nice in-deed. Such attention to detail.
One question: Why the rear wheel quick release on the drive side? Is it just because it is one of the nicest looking QR levers and it compliments the derailleur?
One question: Why the rear wheel quick release on the drive side? Is it just because it is one of the nicest looking QR levers and it compliments the derailleur?
#4
Junior Member
Thread Starter
Congratulations on the finding! I reckon though that this cage is carbon. I would not dare to put it on a full size bike, not to say about a folder. I had a Shimano RD, with an alu cage, for a number of years on a full-size bike and replaced it with an Sram, also with an alu cage. The latter snapped within 3 weeks or so. Since then, my Sram RD principle is that it is not going on a bike unless the cage is steel, either because it is low level enough, or I retrofitted a cage from a lower level, or I cut out the cage myself out of steel.
Sorry for your bad experience, but I believe it was just by accident.
#5
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Thread Starter
It has nothing to do with the look. Just to minimize the width when folded.
#6
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This was about what Sram was claiming. The cage snapped as I was starting from rest rather than riding, so they did not want to honor the warranty, I changed the wheel and the chain presumably was sitting on a cog inconsistent with the derailleur. Well, components are for normal people and normal situations and not some idealized impossible to maintain conditions. I was not isolated as there many people spitting online on that particular Sram RD and I believe there are some spitting on the one you have now. My immediate reaction was of no more Sram components on any bike in my care, but then I could not really afford that , so it is Sram only if there is no other comparable choice. In any case, good luck, if you can make it function there, it is just admiration from me. I go in fact to another limit that, after a handlebar roll, the bike needs to be fully rideable, including not having to check how the chain is seated.
#7
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Bikes: Dahon Jetstream p8 (sold), customized Dahon Helios x10, customzed Dahon Smooth Hound x11,customized Dahon Hammerhead 8.0 d7, Planet X Free Ranger (mullet setup 1x11), Planet X Giovanissimi 20 (1x9), Frog 52 (1x9) and Frog 48 1s
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With folding, the derailleur can get damaged in transit as the derailleur is exposed and rest on... I am guilty of that but, in the case on the jetstream, I don't care and in the case of the helios, the sora derailleur is small so it's not to bad.
Having said that, it may be a good idea to fit a rear derailleur guard as there used to be in the 90's on MTB
Having said that, it may be a good idea to fit a rear derailleur guard as there used to be in the 90's on MTB