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Help! Wanting to convert 2x8 Claris Kona Rove to 1x drivetrain

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Help! Wanting to convert 2x8 Claris Kona Rove to 1x drivetrain

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Old 07-08-18, 06:08 PM
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Millertime77
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Help! Wanting to convert 2x8 Claris Kona Rove to 1x drivetrain

I currently have a 2015 Kona Rove AL with Shimano Claris 8 speed drivetrain; running a 11-32 8 speed cassette and a double FSA tempo chainset in front; 34-50t. I am wanting to convert this into a 1x drivetrain. At tips on how and what parts? I figured I would need a clutch rear derailleur, which I was looking at Shimano XT 9 speed as a replacement? Iím just unsure on the cassette size, single chainring size and cranks that I would need. I mostly ride flat trails with just a bit of low grade climbing within the city. Any advice, ideas or experiences shared would be great.
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Old 07-08-18, 06:17 PM
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Why would you need a clutch rear derailleur? You could remove the big chainring, replace the small chainring with a narrow - wide one with maybe a 36 tooth chainring, and remove the front derailleur and shifter. IDK if you would need to replace your right brifter or not. Keep your current shifter and derailleur.Since you are mostly taking off things and only need to replace a single chainring, it shouldn't cost you all that much money.
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Old 07-08-18, 06:39 PM
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Thanks for your reply. Iíve been doing some research and a lot of the forums and companyís say that a clutch Derailleur is ideal for a 1X set up as it helps keep the chain tighter and reduce chain slap. I am thinking the same thing you are but the more I research, the more I second guess myself.. sigh




Originally Posted by MRT2 View Post
Why would you need a clutch rear derailleur? You could remove the big chainring, replace the small chainring with a narrow - wide one with maybe a 36 tooth chainring, and remove the front derailleur and shifter. IDK if you would need to replace your right brifter or not. Keep your current shifter and derailleur.Since you are mostly taking off things and only need to replace a single chainring, it shouldn't cost you all that much money.
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Old 07-08-18, 07:00 PM
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Just do it!

It sounds to me like you've already gotten the bike tinkerers disease so you might as well just go with it. If it was my bike I'd keep the derailleur I had now until it displeased me in some way. You can always change it later.
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Old 07-08-18, 09:16 PM
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Lowest cost option would be to simply get a 1x chainring that fits your crank (probably 5 bolt 110BCD) of appropriate size, remove the FD, and shorten the chain to appropriate length. If you have chain retention issues maybe try a chainguide. You can also get a Shimano or Shimano-compatible (Microshift) 8 or 9 speed MTB RD (none clutch) and pair it with a somewhat larger cassette--Sunrace makes an 11-40 that will probably run (out of spec) on a SGS MTB derailleur. Imight try a 40t chainring for casual riding if your top end speed isn't particularly important. Not bigger than 46t.

Also if you find the shift patterns of the 50-34 awkward and the range unnecessary, you might consider cyclocross 46/36 rings. You'll find yourself able to ride longer in the big ring and the shift patterns are less awkward and actual shifts faster.

You can't get a compatible clutch derailleur for 8 speed Shimano to the best of my knowledge.

If you want a dialed 1x road drivetrain, your best bet is to go all-in on Sram Apex 1x11. You'll need shifters, derailleur, cassette, chain, and a 1x chainring for your existing crank. That'll set you back about $400 in parts at retail.
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Old 07-08-18, 10:40 PM
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Thanks for the info. I ironically just looked at that same sunrace cassette. I think Iím leaning to go with the XT rear mech, sunrace cassette and new chainring, using the same crank arms. Iím just wanting to replace the high mileage derailleur I already have (itís starting to wear) as well as make some cool looking upgrades. I admit Iím THAT guy and want to have a cool looking bike, as well as something that rides nice for my local terrain.


Originally Posted by cpach View Post
Lowest cost option would be to simply get a 1x chainring that fits your crank (probably 5 bolt 110BCD) of appropriate size, remove the FD, and shorten the chain to appropriate length. If you have chain retention issues maybe try a chainguide. You can also get a Shimano or Shimano-compatible (Microshift) 8 or 9 speed MTB RD (none clutch) and pair it with a somewhat larger cassette--Sunrace makes an 11-40 that will probably run (out of spec) on a SGS MTB derailleur. Imight try a 40t chainring for casual riding if your top end speed isn't particularly important. Not bigger than 46t.

Also if you find the shift patterns of the 50-34 awkward and the range unnecessary, you might consider cyclocross 46/36 rings. You'll find yourself able to ride longer in the big ring and the shift patterns are less awkward and actual shifts faster.

You can't get a compatible clutch derailleur for 8 speed Shimano to the best of my knowledge.

If you want a dialed 1x road drivetrain, your best bet is to go all-in on Sram Apex 1x11. You'll need shifters, derailleur, cassette, chain, and a 1x chainring for your existing crank. That'll set you back about $400 in parts at retail.
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Old 07-08-18, 10:57 PM
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Just make sure you do NOT get a 10 or 11 sp mountain rear derailleur.
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Old 07-10-18, 03:21 PM
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Originally Posted by Millertime77 View Post
Thanks for your reply. Iíve been doing some research and a lot of the forums and companyís say that a clutch Derailleur is ideal for a 1X set up as it helps keep the chain tighter and reduce chain slap. I am thinking the same thing you are but the more I research, the more I second guess myself.. sigh
If your riding is indeed " flat trails with just a bit of low grade climbing within the city." I do not think that chain slap is going to be a big problem for you.
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Old 07-11-18, 11:04 AM
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My thoughts too, Are you having issues from chain slap that are more important to solve than having way fewer available gear ratios? As much as I can see 1x road bikes becoming a thing for many, I can't see it on anything less than 11 speed rear unless you have a very flat terrain, or you are young and can mash out low cadences at high torque all day long without killing your knees.
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Old 07-11-18, 02:08 PM
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On my Trek 720 commuter, I have a 1 x 9 with a SRAM X.7 9 speed long cage, Shimano 12-36 cassette, and a USAMade 44T chain ring. I have only one short steep grade to deal with and a few under passes on my commute. The 44-36 combo is enough for me to handle my steepest grade, and the 44-12 works well with a strong tail wind.

I have another bike with an 8 speed 11-40 Sunrace cassette. I had a SRAM X.7 9 speed long cage on it which worked very well. The current MicroShift RD which I like a great deal and have on another bike with a 11-32 8 speed, does not have the capacity to handle the 11-40.
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Old 07-13-18, 09:48 PM
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I get the point, widely spaced gearing you can shift through quickly in awkward sequences is good not just off road and in cross races, but also in traffic. Not as nice in my opinion for long road rides with sustained periods in the same gear and a large range of speeds--the extreme being touring.

Just hard to get 1x8 going on Shimano drop bars if you expect to have a clutch rear der or extremely wide range cassette. But considering I can get around a moderately hilly town on a fixed gear fine for commuting around town, 8 speed 11-32 and, say, a 46t chainring would be a relative luxury.
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