View Single Post
  #32  
Old November 18th 17, 10:29 AM posted to rec.bicycles.tech
Andre Jute[_2_]
external usenet poster
 
Posts: 10,422
Default Opinions of Gates Carbon Drive system?

On Saturday, November 18, 2017 at 2:24:12 AM UTC, wrote:
https://data.bls.gov/cgi-bin/cpicalc...1&year2=201710


That says $180 in 1913 is now worth $4531. Lotta bikes today that cost more than that. But in my opinion, a general use bike that cosst more than that is being bought by a cafe racer.

BTW, duzz the Gates need cleaning ? So there's what a chain line reducer ?


A Gates Drive consists of a continuous band with rectangular, squared-off teeth sticking inwards at regular intervals, plus two metal circles with indentations at the same spacing around their circumference to transfer power to and from the belt, one of which is the chainwheel and the other the sprocket. That's it. There's no derailleur, no jockey wheel(s), no way of adjusting the tension: the bike must be built precisely to the right drive length for the Gates belt, and the belt has to run within its tension tolerances for it's entire life. It is possible that Gates, coming from automobiles where a high-revving engine can trash it's valves and cams if the timing chain is just slightly wayward, set the tolerances tighter for the bicycle application than necessary. Andrew Muzi was implying yesterday that the Gates belt has enough tolerance to survive the jokers who set the belt tension wrong, and people with track (longitudinally slotted) or Rolloff-style frame-ends can presumably slide the rear axle and with it the sprocket a fraction backwards or forwards to alter the belt tension.

Andre Jute
Lance rules. I would really have loved to see a bicycle designed by good old Vincenzo.
Ads
 

Home - Home - Home - Home - Home