Originally Posted by
rsbob
Three TPU tubes for my Orbea and a carbon fiber stem mount holder for the Garmin. Should buy me 1/4 Watt.
If 2 TPU tubes are fast, 3 should be even more fasterer. IDK if you ever tried TPU tubes before, but they are faster. I forget the exact number, but maybe 5-10 watts and a bit of weight. IIRC, when I was building my budget weight-weenie bike, the weight savings was close to 1/2 lb from TPU tubes...considering they were cheap tubes from Amazon, that was by far the most cost-effective part on that bike. Those numbers might be meaningless to some, but it does have a noticeable speed difference across a large ride.