It’s taken me HOURS to find a new chain today. Halfords didn’t have one of their basic ones, my old LBS had closed down when I got there and then after a bit of head scratching I remembered where there’s another bike shop. Unfortunately I could only get a SRAM 6/7/8-speed which has slight ramps on the side plates. I was hoping to get a more basic chain than that because I still think it’ll perform better on this older drivetrain. Anyway, it’s on and it shifts across the whole range. Test ride time.
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This is the oldest derailleur system I’ve used, by quite a margin. All my older bikes have been fixed or hub gear, so I’ve got no comparison point like a Benelux or anything. The closest I can describe it is it’s a bit like an older friction 5-speed, whereby the lever has a lot of throw and on the block there’s space for the chain to slip if you don’t hit a gear. This is where I think an older-style chain would be advantageous. The original chain measures 6.8mm across the plates and 8mm across the rivets. The 8-speed SRAM has flush rivets and is 7mm across the plates. I think the extra 0.5mm of rivet sticking out is probably a good thing in this case.
The suicide front change is a surprisingly long way down when you’re up on the saddle. I was worried about this one but it’s actually a pretty slick, accurate change. I haven’t even tweaked it, it just works!
What does feel really alien, though, is having gearing like a 28 up at the front. You just don’t normally get old bikes with that sort of gearing. I think I mentioned before that this bike doesn’t like being ridden out of the saddle. The wild gearing brings it alive though, you just sit back instead and push the pedals round!
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That chain definitely looks out of place. Anyway, I think it’s ready to go back into service. Current commute is 14 miles each way with a few hills which I think it’ll deal with just fine. I’ll take it easy on Monday until I’m used to the gears and brakes, but it should fly along.