[AvidCommuter]

Today on each turn of the crank, I noticed the Serial One Rush City Speed drive belt making a crunchy grindy sound. Changing ride modes from Tour to Eco reduced the noise decibels, but as a precaution, I continued riding with the bike switched Off. Upon checking the belt, it felt incredibly loose and to tighten it up I used the SerialOne sourced, multi-tool, for turning a recessed adjustment hex bolt counter clockwise to increase the belt's tauntness. It is located at the frame's right rear lower arm.

 

[Teddy and Bat]

Today on each turn of the crank, I noticed the Serial One Rush City Speed drive belt making a crunchy grindy sound. Changing ride modes from Tour to Eco reduced the noise decibels, but as a precaution, I continued riding with the bike switched Off. Upon checking the belt, it felt incredibly loose and to tighten it up I used the SerialOne sourced, multi-tool, for turning a recessed adjustment hex bolt counter clockwise to increase the belt's tauntness. It is located at the frame's right rear lower arm.

Thank you for posting this. I checked my bike and sure enough it was very loose - phew!

 

[AvidCommuter]

Thank you for posting this. I checked my bike and sure enough it was very loose - phew!

You are welcome

 

[JoeG]

There are adjustments on both sides. You want to move the entire hub back the same amount so adjustments should be made on both sides. If you just continuously tighten the belt side the hub/wheel will be slightly crooked and, the wheel would eventually hit the belt.

 

[AvidCommuter]

There are adjustments on both sides. You want to move the entire hub back the same amount so adjustments should be made on both sides. If you just continuously tighten the belt side the hub/wheel will be slightly crooked and, the wheel would eventually hit the belt.

My bike's belt is crooked. Joe thanks, I looked and found the other adjustment hex bolt.

 

[JoeG]

You are welcome
cheers

 

[supamotard]

Gates carbon belt drives need to be run at higher tension than you would a chain.

If you check in either the Android or Apple app stores, you'll find a free app to help set the correct tension through plucking and tuning like you would a guitar string.

Tools for Bicycles With Belt Drives | Gates Carbon Drive™

 

[AvidCommuter]

Gates carbon belt drives need to be run at higher tension than you would a chain.

If you check in either the Android or Apple app stores, you'll find a free app to help set the correct tension through plucking and tuning like you would a guitar string.

Tools for Bicycles With Belt Drives | Gates Carbon Drive™

You're right. Thanks

 

[kspz3]

Did you need to loosen the large nut or axle Allen prior to adjusting the set screws?

 

[AvidCommuter]

Did you need to loosen the large nut or axle Allen prior to adjusting the set screws?

Hello Kspz3,
Yes, it's best to loosen both axle bolts and then begin adjusting the belt tension allen bolts. Caveat, when making adjustments, no need to turn allen bolt more than 1/2 click at a time. Start with the right hub adjustment allen bolt, check tension, then follow up the left hub adjustment bolt, and check tension. If necessary, continue until reaching proper tension, then retighten the axle bolts.

 

[Hawkeye68]

Upon checking the belt, it felt incredibly loose and to tighten it up I used the SerialOne sourced, multi-tool, for turning a recessed adjustment hex bolt counter clockwise to increase the belt's tauntness. It is located at the frame's right rear lower arm.

Thanks for this post. I'm just looking into checking this on my Mosh. Is it really counter-clockwise to tighten? I would have thought it would be opposite. Clockwise to tighten, counter-clockwise to loosen.

 

[AvidCommuter]

Thanks for this post. I'm just looking into checking this on my Mosh. Is it really counter-clockwise to tighten? I would have thought it would be opposite. Clockwise to tighten, counter-clockwise to loosen.

Thanks for asking. If looking at the bike directly from the rear, counter clockwise appears to be clockwise. Yes, to push the wheel hub backward, turn the hub hex bolt counter clockwise on the side of the hub with belt. Check the tension, and follow up by also turning the left hub hex bolt counter clockwise. Once again, check the tension.