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13 votes

In practical terms, how often do you have to adjust the belt tension of a belt drive bicycle?

I took delivery of a belt drive and Rohloff titanium bike (Nua Bikes, Barcelona custom design) towards the end of March 2020. I've probably done about 3000 miles on it. I did not adjust the belt, as ...
Frank Hinson's user avatar
12 votes

Can my belt drive frame be converted to a derailleur setup?

There is no good way. One could imagine ways of contriving a low-end claw-type derailleur on. Don't do that. Nexus hubs are usually reliable. In some places in the world, there are lot running around ...
Nathan Knutson's user avatar
9 votes
Accepted

How to center Gates belt drive?

The short answer is that they had a bunch of problems with this on the center track-less version(s), and added the center track to finally solve it. For the belt to not get off-center, the gears need ...
Nathan Knutson's user avatar
9 votes
Accepted

Convert the number of teeth in a chain-based drive train to the number of teeth in a gates-based drive train

You just need the same tooth ratio. The fact that it’s a belt drive with a different tooth size/shape doesn’t change anything about it. There will be some size/availability constraints (since you can’...
Michael's user avatar
  • 27.8k
8 votes

Gates Carbon Drive vs single-speed chain, long term lifespan and maintenance

On single sped vs. 11 speed chains. A SS chain should last a lot longer than a derailleur chain. SS chains will have wider side-plates and therefore larger bearing surfaces. The big difference is that ...
Argenti Apparatus's user avatar
8 votes
Accepted

Gates belt drive: installing larger front sprocket

On Gates' site there's a free spreadsheet called Gates Drive Calculator that you can use to determine your belt length needed. It's a weird tool in that instead of plugging in your desired gears and ...
Nathan Knutson's user avatar
7 votes
Accepted

Gates carbon drive on carbon frame

There is no reason a carbon fiber composite frame could not be built to accommodate a Gates drive. CFC can be bonded to a metal split dropout no problem. CFC frames designed for Gates drives are ...
Argenti Apparatus's user avatar
7 votes
Accepted

Riding with a Gates belt past its due replacement mileage: can it snap or other risks?

The mode of failure I have seen in similar belts used in industrial applications are typically one of two types. In the first scenario the belts show physical damage. The teeth may start to separate ...
mikes's user avatar
  • 18.7k
7 votes

Convert to belt drive

Traditionally you would need a split in the rear triangle to fit a belt drive. There is a company named Veer that offers a split belt for with supporting sprockets for several internal hubs such as ...
Otto Lewis's user avatar
7 votes
Accepted

How to replace internal BB with external BB on belt drive bike?

You want to transplant the 104 BCD Gates ring you have on to a hypothetical external BB 104 crank and wind up with correct belt line a Gates sprocket on a Rohloff. A lot of the pertinent information ...
Nathan Knutson's user avatar
6 votes
Accepted

Can a belt driven bike be used in a hilly area?

Yes, the gearing should be fine. from http://www.sheldonbrown.com/nexus8.shtml the lowest ratio is 0.57 which is as low as many mountain bikes. The belt is actually wider than a metal chain and has ...
Kim Ryan's user avatar
  • 768
6 votes
Accepted

Belt drive, rear sprocket can move sideways

Ben from Gates Technical Support here, go ahead and drop us a line with any questions at [email protected]. There could be a few things going on here but that sprocket should not have any side to ...
BENJAMIN CASTANEDA's user avatar
6 votes
Accepted

Cadence: Belt drives + Nexus 11 hubs

A Gates drive belt uses an 11mm pitch between teeth. A conventional bike chain is 1/2 inch or about 12.7mm. The upshot is that for the same tooth count, a drive belt component will be slightly ...
Criggie's user avatar
  • 125k
6 votes

Gates Carbon Drive vs single-speed chain, long term lifespan and maintenance

I’ve run a gates CDX belt on a Specialized AWOL with a Shimano 11 spd internal hub for over 10,000 miles, much of that on wet or dusty trails. The front sprocket is aluminum and shows considerable ...
Gerald D's user avatar
6 votes
Accepted

Upgrading Gates CDN to CDX-EXP

regarding the amount of teeth on the sprockets/crankset: The ratio between the amount of teeth on the rear sprocket and crankset determines the gear ratio of the bike. Even though you have a gear hub ...
Maarten -Monica for president's user avatar
6 votes
Accepted

Achieving Correct Beltline for Gates Carbon Drive

I did end up completing this project. I talked to several people, just calling up bike shops that sold or specialized in belt drive bikes and asking for opinions. I spoke with someone—I think it was a ...
michaelmichael's user avatar
6 votes

Can my belt drive frame be converted to a derailleur setup?

I've never tried them, but some suppliers such as Wheels offer an emergency hanger which is held in place by the clamping of the quick release. while such a solution may allow you to attach any modern ...
Pisco's user avatar
  • 773
6 votes

Do split frames for belt drive bikes need special screws?

Looking at the Gates catalogue, they do not make bolts for frames. They do not sell bolts for frames. Different frames use different split systems to allow the belt in and NONE OF THEM ARE ...
Noise's user avatar
  • 14.2k
6 votes

Convert the number of teeth in a chain-based drive train to the number of teeth in a gates-based drive train

Some completely identical ratios: 11 teeth in front, 4 in back 22 teeth in front, 8 in back 33 teeth in front, 12 in back 44 teeth in front, 16 in back 55 teeth in front, 20 in back 66 teeth in front,...
juhist's user avatar
  • 19.1k
5 votes

Early Rider Belter hub maintenance

Fastace is a maker of bicycle components. That looks like a freewheel with one belt drive sprocket instead of 5 or more chain drive sprockets. See the Terminology Index for a description of the ...
Argenti Apparatus's user avatar
5 votes

Chain vs chainless options

Wow, this discussion really highlights how bike cultures can differ across regions, I'll try to stay as objective as I can. Chains allow for single speed, geared hubs and derailleurs, belts allow ...
Sebastiaan's user avatar
5 votes

How do belt drives perform with snow?

In addition to @jeyhendren and @phil-johnstone nice answers I want to add my 3 findings. First year with snow I (RieseMüller/Bosch/Nuvinci/center track) had no problem whatsowever. I can't remember ...
LosManos's user avatar
  • 315
5 votes
Accepted

Can the belt drive on a Trek 1st District be replaced with a chain drive?

I have not worked on one of these bikes so I've gone online to find documentation around what parts are on that bike and what might be compatible in chain drive parts. I think that bike comes with a ...
David D's user avatar
  • 21.6k
5 votes
Accepted

Convert to belt drive

Generally no, for the simple reason that unlike chains belts are continuous and can't be split, so belt drive bikes need a split chain or seat stay, or a removable dropout. If you had a single speed ...
Argenti Apparatus's user avatar
5 votes
Accepted

Nexus IGH reluctant to shift after applying load

Yup - I've had this exact experience on an Alfine 11. If you pedal in smooth circles and maintain the pedal pressure, its possible to shift a long way through the gears before the gearbox catches up. ...
Criggie's user avatar
  • 125k
5 votes

Can a Pinion bike work with an indoor direct drive trainer?

No, sadly that hub won't be compatible with the trainer. Your trainer expects a cassette of 9-11 or 12 speeds, which presumes a chain. Full specs are at https://www.garmin.com/en-US/p/701670#specs ...
Criggie's user avatar
  • 125k
5 votes

Gates CDN - frequent belt failures

I would say there are a few things to check. Use Gate's visual guide to check the rear sprocket doesn't look worn. The belt needs to be straight or it will fail early. It is worth using measurements ...
Noise's user avatar
  • 14.2k
5 votes

Do split frames for belt drive bikes need special screws?

It is a bolt, not a screw. The difference is that a bolt has a matching thread in the receiving part, whereas a screw cuts it's own thread. You absolutely require a matching thread in the part for ...
Criggie's user avatar
  • 125k
5 votes

Abnormal wear on Gates Belt Drive CDX rear sprocket

It looks like either you didn't have your lock ring tight enough and the splines of this sprocket were able to chatter and wiggle themselves into non- existence, and /or your belt was too tight. If ...
bradly's user avatar
  • 1,475
5 votes

Replacing crank/spider on belt drive bike (stripped pedal hole)

The best and simplest plan here is get the damaged pedal thread repaired with a helicoil, so you're not replacing anything. If you were replacing things, you're replacing at least the right crank and ...
Nathan Knutson's user avatar

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