![]() ![]() Top right: similar to #9, except having a newer style logo (is it laser etched?) and a larger center bore.ġ1. Top left: similar to #8, except having a smaller center bore and showing the tooth count on it's face.ġ0. The last set of sprockets are all anodized black.ĩ. I've never owned a set single-pinch half-wraps, so I can't comment on their drive boss. The drive boss of double-pinch Flights is in the same plane with the sprocket face, explaining the transition to sprockets not having recessed holes. The engraving looks finer than the previous ones.Īs stated above, the drive boss of 401 Flight cranks protrudes past the plane of the sprocket face (requiring a recess in the sprocket). Tooth count is not displayed on the face (44T pictured). Center bore looks larger maybe for 1-piece cranks (?). Bottom right: back to a more traditional design with triple lines and the logo in-line with the drive hole. Drive spoke is wider than the other spokes.Ĩ. Also has recessed center hole and drive hole (no idea why).ħ. Top right: similar to #5, but has double lines instead of triple lines. Top left: very similar to #4, except machined logos instead of stamped logos.Ħ. The second set of sprockets appear to have CNC machined logos/details.ĥ. The bubble-font sprocket can still be seen in the 1992 Redline catalog (in the reference section on this site). Separated letters on frame decals started in 1991 (but were not italicized until maybe 1993). The font style on #2 & #3 (where letters touch each other) is used on frame decals from approx 1981 - 1990. Also, the position of the drive hole is now perpendicular to the logo. Bottom right: similar to #1 & #2, but has the newer italic Redline font. Bottom left: similar to #2, but has a beefed-up section around the drive hole.Ĥ. Top right: very similar to #1, but has the next generation Redline font.ģ. Top left: the original "bubble font" sprocket.Ģ. The first set of sprockets all have a recessed drive bolt hole the drive boss of 401 Flight cranks protrudes past the plane of the sprocket face and fits in this recess.Īlso, these all appear to have stamped logos/details.ġ. Does anybody have more info as to what years each one was available? Are there any other variations not shown here? ![]() I put them in an order that seems to make sense to me and made a few observations. Most of the pictures were from this site. I put together some comparison pictures of the different variation of Flight sprockets that I have noticed. ![]()
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