Old 10-08-18, 01:37 PM
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verktyg 
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Shimano Uniglide Chains ca. 1975

Originally Posted by repechage View Post
Shimano gave me to test a New Uniglide chain and freewheel in March of 1975. They advised they would pick it up in a month, I used it for three weeks and removed it as the chain had stretched to the point of skipping.
The three reps from Shimano when they saw the chain ... two were sucking air through their teeth as the Japanese sometimes do when surprised, frustrated.
"... sucking air through their teeth as the Japanese sometimes do when surprised, frustrated." Ah so, neba hatchi

Seems I remember hearing something about those problems back in 1975. We started getting Uniglide 600 chains sometime during the summer of 1975. Never had a problem. (I liked the pretty blue color of the boxes).


The 600 chains sold for about $7.00 retail vs. about $5.00 for standard Sedis chains. Even so $2.00 was enough to make some folks balk back then. DuraAce chains didn't offer much other than the all gold appearance plus they were a lot more expensive.

Regina Oro chains sold for $19.00!!!! Yes, but the slavish raceur set convinced themselves that they were better - that's what the Pros used!

What I had determined was that the old Sedis chains with the extended pins shifted better on wider range FWs (14-28T and up) because the sprocket teeth would pick up the protruding pins.



The rounded pins on the Regina chains probably worked better on straight block and corn cob FWs because they were smoother than the protruding Sedis pins and the jumps between sprockets were smaller.



About 1977 we started importing 50 & 100 meter bulk spools of SedisSport chains from France. This was before they officially hit the market. They cost us less than $3.00 per chain when we split them up. These new SedisSport chains worked as well as the Shimano 600 chains, in some cases better like on smaller FWs because of the flush pins and flat outer links.

They were some of the first bushingless bicycle chains sold which gave them some lateral flex that aided in shifting wide range gearing that was becoming popular with touring bikes.




The original SedisSport chains had spread inner links. The 2nd generation had thinned outer links. They later became the SRAM PC-48, 58 & 68 style chains.



First generation SRAM PC-48 chain.


Later SRAM changed the design and pretty much copied Shimano with their PC-830, 850, 870 & 890 chains.


I still have a few NOS PC-48 chains that I've had to go to for some freewheels like wide range Suntour Ultra 6 & 7 speeds.

Back in New Mexico in the 70's I was running a bike shop. I used WD40 for chain lube because of the dry dust problem. The original Sedis chains cost me ~$3.00 and I changed them every 3000 miles. I put the used chains in Baggies and saved them. A number of years ago I bought one of the Park CC-3 chain checkers, cheap, easy to use and clean.


I checked out all of those old Sedis chains and found they were all still good! There have been several occasions with old French freewheels and Simplex Criterium RDs that I had to use those old Sedis chains to get good shifting!

@ryansu The Park MLP-1.2 Master Link Pliers are well worth the money plus master chain links are such a great time saver. BTW, I bought one of Park CT-3.2 chain breakers, another worthwhile investment.

verktyg
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Last edited by verktyg; 10-08-18 at 01:46 PM.
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