Dirkitech Posted July 9, 2018 Posted July 9, 2018 Hello All I'm currently servicing and repairing a road bike for a family member. The bike came with a full set of Shimano's 105. Shifters are 8 speed STI's, but unfortunately the rear shifter has broken and bent bits inside and cannot be fixed (tried, extensively).I'm trying to find the cheapest replacement for the right broken STI and I'm also looking at any compatibilities with Campagnolo and SRAM, because I'm struggling to find a shimano replacement.Based on the tables from this website:http://www.jtekengineering.com/resources/shiftmate-compatibility/The current full 8 speed setup should work if I only replace the right shifter with any of the following:Shimano 9 speed road or mtb shifter (cable pull different though)Campagnolo 8 & 9 speed shifter (cable pull different though)Campagnolo 10 speedThis website confirms that 10 speed Campagnolo shifters should work with 8 speed Shimano groupsets:http://pistarice.blogspot.com/2009/07/shimanpagnolo-8-speed-rear-10-speed.htmlFrom Sheldon Brown's website, it seems like the above may not be true:http://www.sheldonbrown.com/cribsheet-spacing.htmlThe table shows the sprocket centers on the 8 speed cassette to be 4.8mm and this only matches with other 4.8 and partially with one 7 speed cassette.I've also read comments that apparently any 10 speed Campagnolo shifter should work, but not sure if they will and if they're too pricey though.Can anyone with experience of knowledge on these compatibilities please comment? The only place I can find a replacement right 8 speed STI is on ebay for around R600-650.
bikebloke Posted July 9, 2018 Posted July 9, 2018 https://www.bikehub.co.za/classifieds/313729-shimano-road-bike-stis/ thats what the classifieds are for mate ..
Dirkitech Posted July 9, 2018 Author Posted July 9, 2018 https://www.bikehub.co.za/classifieds/313729-shimano-road-bike-stis/ thats what the classifieds are for mate ..Apparently the cable pull on the 9 speed shifters are different and will cause problems with the shifting of the 8 speed cassette.
bikebloke Posted July 9, 2018 Posted July 9, 2018 https://www.bikehub.co.za/classifieds/312131-shimano-sora-3x8-flight-deck-sti-8-speed-triple/
Dirkitech Posted July 9, 2018 Author Posted July 9, 2018 https://www.bikehub.co.za/classifieds/312131-shimano-sora-3x8-flight-deck-sti-8-speed-triple/I saw that too, but it is 3x8 and I have no idea nor can I find information on how it would work with the current 2x8 setup. Thank you though. Will contact them to try it out and see if I can jippo it with the limiting screws.
Schnavel Posted July 9, 2018 Posted July 9, 2018 Why not buy the set and just use the right hand shifter (rear) to replace the broken shifter. Then you will have a spare left hand shifter that you can keep for parts, or sell later on the hub if someone is looking for that specific one - it's amazing what people search for on the hub.
Dirkitech Posted July 9, 2018 Author Posted July 9, 2018 https://www.bikehub.co.za/classifieds/312131-shimano-sora-3x8-flight-deck-sti-8-speed-triple/ Why not buy the set and just use the right hand shifter (rear) to replace the broken shifter. Then you will have a spare left hand shifter that you can keep for parts, or sell later on the hub if someone is looking for that specific one - it's amazing what people search for on the hub. doh that went straight over my head. it'll work perfectly then.Thank you bikebloke and Schnavel.
batmobile Posted July 9, 2018 Posted July 9, 2018 doh that went straight over my head. it'll work perfectly then.Thank you bikebloke and Schnavel.If you don't com right I have a pair of Sora STI's that you can have. You'll just need to collect.
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