The Anti-Chain: Carbon Belt Drive Upgrade for Bikes
June 24, 2011, 9:05 am / Categories: Biking
In a column last year, “Belt Drive Mountain Bike,” I covered the bike-chain-replacing Carbon Drive System from Gates, writing that “the humble bike chain — greasy, gunk-prone, finicky if not lubed and maintained — has been standard equipment for decades, but belt drives, which employ a flexible loop of polyurethane embedded with carbon-fiber cords, give bikers a new option.”
This week, Gates (www.carbondrivesystems.com) announced a new option itself and an upgrade from the belt-drive system I reviewed last year.
The company’s CenterTrack system, which recently debuted on bicycles from Spot Brand, has a new design said to offer a 20-percent tensile strength increase and a slimmer profile from the current Gates system.
CenterTrack, officially called CDX-CT, includes a complete pulley and sprocket redesign. The side flanges have been removed and replaced with a center track where the belt aligns.
Other upgrades: The rear pulley is now stainless steel instead of alloy, and the new belt design is slightly wider, both strength-increasers according to a company rep.
Spot Brand, which is based in Golden, Colo., began shipping bikes with CenterTrack to shops in May, including single-speed mountain bikes and internally-geared commuter models. Other brands will introduce CenterTrack-equipped bikes this summer, a Gates rep says.
—Stephen Regenold is founder and editor of www.gearjunkie.com.
Carbon Drive isn’t just an after-market setup. There are 90-plus bike models from multiple brands that spec Carbon Drive in 2011. Most are built with a split in the rear triangle so the belt can be installed. Check out this video if you want to learn more about how to install or work with Gates Carbon Drive: http://www.youtube.com/watch?v=MPoKawd1y9M
As a framebuilder and a quiet proponent of singlespeeds, I’m attracted to the simplicity of the belt drive.
However, there are two issues that really keep me far, far away from it:
1. Cost.
2. Problems with icing in the winter months will cause the belt to get thrown/damaged and need replacing.
I have not experienced #2 personally, nor seen it happen, but have heard about it from 2 independent sources that I trust. (If Gates wants to send me some hardware for testing, they’re more than welcome to.)
There’s a pretty decent list on Gates site but I’m not sure how up-to-date it is these days – Gates had a ton (over 50 I think?) of different bikes on display at last years Interbike and I would think they’d have even more this Summer at the 2011 one.
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looks great, now put a link in it so everyone can use it!