Shimano I-Spec B bar clamp

thingiverse

I bought some shifters which use the I-Spec B mounting interface, but I don't have the accompanying brakes. Part of this was an experiment to see if 3DP plastic could repeatably stretch over the bar & still adequately clamp. This would enable users to fit & remove accessories, like shifters, without access to the end of the tube or bar. In practice, this worked wonderfully well, with some revs, like rev 3, outperforming rev 7 because more of the arc length is available to flex. The clamp is strong *enough*, although it is certainly weaker than the stock metal solutions. * therefore, I made my own clamp * rev 3 & 4 both leverage cast aluminum fittings that bridge between the shifter & the bar that came with my shifters * M5 bolts & nuts required * rev 3 has the shifter bolt coaxial with the bar clamp bolt, which puts the shifter vertically too far down for ease of each -- hence, rev 4 where it's the shifter mounting bolt axis is 4.5 mm below the bar axis * printed in PLA just fine I will likely no longer be updating this model any more since I got shifters with a dedicated bar clamp (not I-Spec) * printed in Clear resin on Form 3, seems fine so far though I thought it might be too brittle