rsgreen Posted September 30, 2016 Share Hi guys, I did a 1 x 10 conversion and found the original cassette on my bike was not sufficient (11-36) with 36t chainring. I did some investigating and was told to purchase a 10spd Sunrace 11-42 cassette which would help me a bit. So off I went and purchased the cassette, fitted it and have just found the shifting to be giving me issues and I just cannot get it right. I have a slx 10spd shifter with an XT long cage rear derailer and I also put the longer B screw in to give clearance for the derailer when on the 42t. Has anyone else done this 10spd conversion using the same components and can give me advice on how to get the shifting crisp? Do i need another rear derailer or shifter??? Alternatively would anyone advise that the conversion I have done was not correct and I should rather replace the cassette with an 11-40 Sunrace 10spd and mayb reduce my chainring from a 36t to a 32/34t? Any advice will be greatly appreciated. Link to comment Share on other sites More sharing options...
Eddy Gordo Posted September 30, 2016 Share Did you replace the chain as well?How many Km on the current chain? Hi guys, I did a 1 x 10 conversion and found the original cassette on my bike was not sufficient (11-36) with 36t chainring. I did some investigating and was told to purchase a 10spd Sunrace 11-42 cassette which would help me a bit. So off I went and purchased the cassette, fitted it and have just found the shifting to be giving me issues and I just cannot get it right. I have a slx 10spd shifter with an XT long cage rear derailer and I also put the longer B screw in to give clearance for the derailer when on the 42t. Has anyone else done this 10spd conversion using the same components and can give me advice on how to get the shifting crisp? Do i need another rear derailer or shifter??? Alternatively would anyone advise that the conversion I have done was not correct and I should rather replace the cassette with an 11-40 Sunrace 10spd and mayb reduce my chainring from a 36t to a 32/34t? Any advice will be greatly appreciated. Link to comment Share on other sites More sharing options...
Captain Fastbastard Mayhem Posted September 30, 2016 Share What issues are you experiencing? Link to comment Share on other sites More sharing options...
dirtypot Posted September 30, 2016 Share In addition to the chain, when was the last time that you replaced the shifter cable and housings? I've fitted this exact setup recently and it was 100% sweet. Using your longer B screw, have you set it up that it's as close as possible to the big 42T? If it's too far away then the shifting becomes really sloppy lower down. Always remember though - new cassette = new chain. That should be a non negotiable. Eddy Gordo, Ofaniy and JXV 3 Link to comment Share on other sites More sharing options...
s14phoenix Posted September 30, 2016 Share I tried the 1x10 also with a 42 expander at the time. The only thing I would recommend is to set the derailleur clearance with the B screw as close as possible to the 42T. This is so the derailleur is less out of whack with where it was designed to run. It is honestly not as crisp as on the 11-36 due to the distance the RD is away from the cassette.You will have some loss of the crispness vs a perfectly crisp setup 11-36. must agree with checking the chain too... can make a day and night difference. Edited September 30, 2016 by s14phoenix Link to comment Share on other sites More sharing options...
JXV Posted September 30, 2016 Share Hi guys, I did a 1 x 10 conversion and found the original cassette on my bike was not sufficient (11-36) with 36t chainring. I did some investigating and was told to purchase a 10spd Sunrace 11-42 cassette which would help me a bit. So off I went and purchased the cassette, fitted it and have just found the shifting to be giving me issues and I just cannot get it right. I have a slx 10spd shifter with an XT long cage rear derailer and I also put the longer B screw in to give clearance for the derailer when on the 42t. Has anyone else done this 10spd conversion using the same components and can give me advice on how to get the shifting crisp? Do i need another rear derailer or shifter??? Alternatively would anyone advise that the conversion I have done was not correct and I should rather replace the cassette with an 11-40 Sunrace 10spd and mayb reduce my chainring from a 36t to a 32/34t? Any advice will be greatly appreciated.Nothing wrong with that mix of components. It should work OK especially with long cage RD provided that:1) The RD pivots and pulleys are not excessively worn2) The RD and hanger are not bent3) set the B screw so that the top RD pulley only just clears the 42t. The top pulley will sit further away from all the other gears than before and this can influence shifting so don't adjust more than you have to.4) Fit new cables and housings to ensure minimum friction in the system5) the biggie - check your chainline. swap bb spacers from Drive side to non drive side and or use spacers under the chainring to get the chainline onto the centre ( between 5 and 6) or 5th largest cog at rear. chainline aligned between 4th and 5th largest cog sometimes also OK.6) the NW chain ring and 42t rear extender cog are directional and sometimes have offsets so make sure they are correctly installed or it can mess up spacing between the 42t and 36t on cassette or affect chainline if the chainring is fitted wrong way round. When I did my 1x10 conversion I had to fit spacers between crank and chainring (with longer chainring bolts) to adjust chainline. Perfect since then. Good luck. Sent from my SM-G935F using Tapatalk Edited September 30, 2016 by JXV Link to comment Share on other sites More sharing options...
rsgreen Posted October 1, 2016 Share Did you replace the chain as well?How many Km on the current chain?I didnt replace the chain. It is a sram chain but pretty new. Do you think the mix of a sram chain on the sunrace cassette with shimano RD and shifter may be the issue?? Link to comment Share on other sites More sharing options...
Captain Fastbastard Mayhem Posted October 1, 2016 Share I didnt replace the chain. It is a sram chain but pretty new. Do you think the mix of a sram chain on the sunrace cassette with shimano RD and shifter may be the issue??No. It's a setup issue. Hardi, JXV and Eddy Gordo 3 Link to comment Share on other sites More sharing options...
Captain Fastbastard Mayhem Posted October 1, 2016 Share I didnt replace the chain. It is a sram chain but pretty new. Do you think the mix of a sram chain on the sunrace cassette with shimano RD and shifter may be the issue??No. It's a setup issue. Link to comment Share on other sites More sharing options...
BaGearA Posted October 1, 2016 Share Down size your chainring , While 99% of people will tell you its fine ,normal 10spd ders. were never made for ranges like that and thus you will never get the shifting perfect and crisp (it may work yes but not well) I ride a 30t on a 11-36 cassette and can climb some pretty steep sh#t and I'm not as fit as I could be (not by a long shot) and can still manage 48kmh without feeling my cadence is uncomfortably high. If you are reasonably fit you'll manage fine on a 32t with a 11-36 cassette. **** watch how I'm going to get stoned for saying the above about wide range cassettes Edited October 1, 2016 by BaGearA Link to comment Share on other sites More sharing options...
Captain Fastbastard Mayhem Posted October 1, 2016 Share Down size your chainring , While 99% of people will tell you its fine ,normal 10spd ders. were never made for ranges like that and thus you will never get the shifting perfect and crisp (it may work yes but not well) I ride a 30t on a 11-36 cassette and can climb some pretty steep sh#t and I'm not as fit as I could be (not by a long shot) and can still manage 48kmh without feeling my cadence is uncomfortably high. If you are reasonably fit you'll manage fine on a 32t with a 11-36 cassette. **** watch how I'm going to get stoned for saying the above about wide range cassettesDown sizing the chainring won't do anything for the gear spread. All you're doing is introducing a smaller ring, and he'll have to remove links in the chain. If it's a mid or long cage derailleur try work fine with wide range cassettes. You just have to get your settings right Link to comment Share on other sites More sharing options...
BaGearA Posted October 1, 2016 Share Down sizing the chainring won't do anything for the gear spread. All you're doing is introducing a smaller ring, and he'll have to remove links in the chain. If it's a mid or long cage derailleur try work fine with wide range cassettes. You just have to get your settings rightyes , I admit it only prevents the cage from stretching super far but i have found this to improve the performnce Link to comment Share on other sites More sharing options...
Captain Fastbastard Mayhem Posted October 1, 2016 Share yes , I admit it only prevents the cage from stretching super far but i have found this to improve the performnceNo, it really doesn't. Chainring size in a single ring setup has nothing to do with chain /derailleur stretch unless you don't change chain length when you change ring size Link to comment Share on other sites More sharing options...
eddy Posted October 1, 2016 Share The solution is a front derraileur...... Walt Jabsco 1 Link to comment Share on other sites More sharing options...
JXV Posted October 1, 2016 Share **** watch how I'm going to get stoned for saying the above about wide range cassettesYes and no.The 10 spd deraileurs can handle the range...its less than a 2x or 3x gear capacity....but yes they were mostly not designed for the 40t and 42t big cogs at the rear. On some RDs you even have to fit a longer B screw. My 10spd XT 1x conversion works reliably but the changes are not as slick as the 2x setup they were designed for. Regarding the front ring selection and granny gears .... well there is such a wide variation in riding terrain and rider fitness....people must choose what works for them. 1x may not suit some locations and riders. Sent from my SM-G935F using Tapatalk Link to comment Share on other sites More sharing options...
rsgreen Posted October 2, 2016 Share I went into the specialized store over the weekend and saw a bike there with a 1 x 10 setup. It had 32t chainring with a 11-42 cassette using sram gx RD and sram shifters. I cant help but feel like i need to change to the same RD and buy a Sram shifter and get rid of the Shimano stuff currently on my bike. The way I see it, if that bike comes built with those components and it works perfectly then if i change to the same components it will work the way I want. The cassette on the bike wasnt a sunrace cassette though but rather a special made specialised one. Link to comment Share on other sites More sharing options...
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