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has the one been refurbed by one of the polishers out there to make it nos again
THICKNESS. Nice point.Non-lip: Main body = 5.4mm Teeth = 3.5mmtwin-lip: Main body = 5.0mm Teeth = 2.35mm
"sat in my shed for 20 years with about 10 other flight rings"
not sure about the machining but measure the centre hole as i'm sure some of the later one's didn't need a top hat washer as they were 19mm
Quote from: 58delray on June 15, 2011, 06:43 PMnot sure about the machining but measure the centre hole as i'm sure some of the later one's didn't need a top hat washer as they were 19mm Non of mine need a top hat washer, they all have a 19mm hole. Thats the main reason i used flight rings, I didnt (& dont) like top hat washers.They are all still the early font, so they defo aint mid 90s ones. There were big changed in flight rings when they tried to make them stronger. There was a bulge where the crank arm bolt goes, and the cutouts were smaller
For ages, flight rings were the only (?) chainring that you could get with a 19mm hole. I WAY prefer it.Shame that new school rings still have the top hat. Im gunna change to a spline drive sprocket soon, mainly to get shot of the top hat ..... again!
Maybe its to take a thinner chain?