So I took it to the LBS, which declared it DOA. Shimano 105 R7000 STi lever not shifting. However, it has a couple other unique features that you might like or dislike. As the strands started breaking- the shift action deteriorates, and no click latching was one of the symptoms. So I have a Shimano 105 10-speed groupset (5700 series) that I bought brand new last year. This is a job I have done on my other bikes previously, so not a complete newby, but, I am finding the set up to be a bit of challenging, namely getting all 11 gears to work!!! I just purchased my 105 R7000 groupset (new) 30 days ago. The new set up is a Shimano R7000 GS derailleur fitted to a 32-11 11 speed cassette, with Shimano 11 speed R5800 shifter. Posted by 1 year ago. At the helm is the SB-M110 shift/brake lever set, with a rather unique brifter controlling the derailleur. The SB-M110 shifter is shares the same pull ratio as a Shimano MTB 1×11-speed shifter, which makes it the perfect candidate for a mullet drivetrain. The numbers on the shifter do not line up with the gears i am actually in, to get on the largest gear, i am 2 clicks below the 1, in the smallest gear, i am on number 5 not … Hi, I have a revo shift sl-rs43-7. My front Tiagra 4600 shifter is toast. Shifter Cables. No improvement whatsoever. Failing that, i've got a nearly new set of 105 10sp shifters to sell. Either of these conditions can bind the cable, leading you to believe the problem is a shifter. I have a 105 5800 groupset and can index either 2 - 11 or 1 - 10 but not the full range 1 - 11. Repeatedly shift on to the biggest chainring, adjusting the high limit screw half a turn at a time until it does so without hesitation, but does not overshoot the largest ring. Close. Well, I tried soaking it with WD40 and then re-lubing it with spray lithium grease. It is not a cable problem. I want to upgrade to 105 10 speed 5700 shifters, since my Mavic CXP-22 wheels are only 10 speed. They say they've seen this before with Shimano shifters. The right lever just stopped shifting. Some internal part gets even slightly bent and the shifter fails completely. Having spend some time at the rear of the bike I have now found out my problem is with the shifter. Something inside, either a pawl or spring is broken. Inspect the cables to make sure the flexible housing is not cut through or that a section of the cable is not badly crimped. Taking apart the more recent 105 shifters is probably about as easy as a 5000 piece jigsaw puzzle upside-down and without the picture. Archived. There is one derailleur at the front and one at the rear. The two gear shifters of the Shimano 105 each control a derailleur, which changes gears by moving the chain from one sprocket to the next. As the rear derailleur is shifted, the angle of the chain can change and it can rub against the side of the front derailleur cage, causing wear. don't attempt to take your shifters apart unless you are a shimano robot with special shimano robot spring putter-inner fingers. A second problem found on another Sora shifter that had similar shift deterioration was a result of a tensioning spring used for the return action- the … Shimano 105 R7000 STi lever not shifting. 1. Unless you know what you are doing, its probably best to take it off your bike and whip it into a shop to get a pro look at it. Thankfully it cut out just before I got home. Shifter cables consist of a stranded steel cable that runs through a flexible housing. Hey all, TL,DR I have a sticky left hand Shimano 105 (5700) shifter, checked and eliminated all other potential issues that could cause the front mech to jam/not work, has anyone any suggestions before I fork out for a new lever? 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