Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

User Tag List

Reply
 
Thread Tools Search this Thread
Old 04-05-13, 01:55 PM   #1
jawnn
Senior Member
Thread Starter
 
jawnn's Avatar
 
Join Date: Aug 2004
Bikes:
Posts: 387
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Belt Drive bicycles?

I hear rumors that the Shimano bicycle Alfine belt drive has problems with the belt needing to be so tight that the bearings wear out too fast and the cogs wear out because of the road dirt.

Is that true? Are there any other belt drives? Like the gates carbon belt drive? or maybe it's the same but improved?

I wan to use one with a Nuvinci

Last edited by jawnn; 08-17-13 at 12:38 PM.
jawnn is offline   Reply With Quote
Old 04-05-13, 06:16 PM   #2
dchsueh
Senior Member
 
Join Date: May 2010
Location: Toronto, ON area
Bikes: 2010 Globe Live 2
Posts: 72
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
the two I have heard of are CDrive http://www.cycledrive.com/ and Gates Carbon Drive http://www.carbondrivesystems.com/

Gates has a CenterTrack variant that supposedly runs at lower tension than their original style; this is the system pictured in your blog April 1 2013 entry
dchsueh is offline   Reply With Quote
Old 08-17-13, 12:38 PM   #3
jawnn
Senior Member
Thread Starter
 
jawnn's Avatar
 
Join Date: Aug 2004
Bikes:
Posts: 387
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
This has go to be the best idea yet, if it works. Does any one know if they track OK? Or does the belt have a lot of problems staying on??

How is the tension problem?

Attached Images
File Type: jpg metropolis belt drive.jpg (34.8 KB, 27 views)
jawnn is offline   Reply With Quote
Old 08-17-13, 01:33 PM   #4
fietsbob 
coprolite
 
fietsbob's Avatar
 
Join Date: Jun 2010
Location: NW,Oregon Coast
Bikes: 7
Posts: 18,737
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 203 Post(s)
Continental introduced their belt to compete with Gates , Personally I've never seen either ,

so no User feedback ... did look up the parts cost is about $500 for the belt drivetrain..


I can do a lot of chain replacements before hitting that mark..


Patterson Metro and Schlumpf Speed Drive are both 1.6X over drive setups. in cranksets..

I have the Schlumpf Mountain Drive.. it works well.. its a big reduction gear.. functions as if a 50t-20t double..
fietsbob is offline   Reply With Quote
Old 08-17-13, 02:28 PM   #5
sreten
Banned.
 
Join Date: Feb 2013
Location: Brighton UK
Bikes: 20" Folder, Road Bike
Posts: 1,664
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Hi,

(V) Belts need to be tight compared to chains, that is a given,
toothed belts less so, but can't be as loose a chain can be.

The idea tension wears stuff out doesn't hold that much water.

A ball park idea for a toothed belt is stood with one foot on a
pedal at 3 o'clock, tension in the top is near double and tension
in the bottom is near zero, the same as a chain, i.e. tension is
related to half max load, and effectively the riders weight.

If you just pootle about, clearly optimum belt tension is lower.

rgds, sreten.
sreten is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 01:02 AM.