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Taya Chain
On 2017-09-06 17:11, John B. wrote:
On Wed, 06 Sep 2017 13:29:59 -0700, Joerg wrote: On 2017-08-28 15:59, AMuzi wrote: On 8/28/2017 4:28 PM, wrote: On Monday, August 28, 2017 at 1:59:20 PM UTC-7, Joerg wrote: On 2017-08-28 13:43, sms wrote: I replaced the chain that I broke on Saturday with one I had in my garage that I must have purchased five to ten years ago. It has a connecting link and it says "Taya" on it. It's for 6,7,8 gearing. It seems okay, but I think that this is the first time I've used a chain with a connecting link since childhood. I looked up Taya and it's a big Taiwanese chain manufacturer. I still have a Sachs-Sedis 7-speed chain on my road bike which I bought from a friend as NOS, for $6 which was the old sticker price (the sticker had already turned brownish). No link, mounted with hammer and anvil as usual. To my utter amazement it doesn't show any measurable stretch after over 2000mi and sometimes I really put the coals on because of our hills. Even the old Wippermann chains could not rival that. I am very religious about chain cleaning and lube though. The old 5-6-7 speed Sachs chains wore out three days after the bike was junked. The Sedis (later Sachs-Sedis) material and Delta hardening process was not only exceptional but unsurpassed down to today except for possibly Record chains. That ended with SRAM. Why is that? In the automotive world such an advance in technology is kept and further developed, not rescinded and chucked back into the dust bin. Well, usually. For example, transmissions nowadays typically last the whole lifetime of a car. 20+ years for us on two vehicles so far, for everything. Vehicle owners would have a hissy fit if they had to swap out a chain every 5000 miles. I think that you are confusing reality with your own fantasies. In years past I have worked with two engineers who had worked in the automobile industry. They both said the same thing, that the major effort in the motor industry was to "make it cheaper". One of them described a cash for suggestion program that Ford (I believe) had for a time and commented that when you made a million cars the removal of one sheet metal screw in the firewall was of interest. You've got to do your research first and then buy the right brand and type of car. Which I always did except for my first car after getting the degree (learned that lessen very fast). As for a chain drive lasting 5,000 miles, it is perfectly feasible to build a chain drive that will last more then 5,000 miles. Of course it will cost more and be rather large and ugly and will, of course be heavier then a current systems, but it can be built.... if anyone will buy it. What's his Face... the guy that lives in the low rent district of the Irish Republic, did that a few years back and described how it was done in loving detail. I haven't bought a new chain in some time but I did see a 9 speed chain with a price tag on it recently and it was 500 baht. In Usian money that would be about US$15.07. Are you telling me that people that sprint around on 1000+ dollar bicycles worry about a bicycle chain that costs so little money? 1.5% of the cost of the bike? No, I am talking about people like me who also use bicycles for transportation and not just for sports. -- Regards, Joerg http://www.analogconsultants.com/ |
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