Just an update.
60kms or so now on the bike. I’ve literally not ridden my Allez Sprint at all since this build has been completed (makes me sad), and I have to say that the larger frame (52 vs 49) and the non-slammed stem have made a world of difference in comfort.
As mentioned elsewhere I only ride at the one place 4-5 days a week. It’s a beautiful park with an undulating 4km loop and for the first time since getting back on the bike I did 8 laps (I usually only do 3 on average, some days 5).
I still think the Allez feels faster, especially when getting off the saddle and mashing the pedals. I also feel the Allez rolls faster (coasting on the downhills on the SL6 I feel like the bike literally drops all speed and slows down a tonne wheras the Allez feels like it actually gains speed when coasting on the downhills. I think the differences are a combination of things, maybe the Allez is stiffer, the more aggressive setup probably attributes to the bike feeling faster, and the extra weight of the Allez probably makes it roll faster when coasting downhill.
Either way what I’m really happy about is that both bikes look and feel different to each other. I no longer wish to make the Allez lighter, and I no longer wish to slam the stem on the SL6. Bit of a win win really.
Earlier I commented that my drivetrain was louder since installing mods, and I blamed the cassette (thinking that it’s because it’s a one-piece vs. the Ultegra cassette my bike came with).
I’ve ordered a 12-Speed Dura-Ace/XTR chain which will get to me next week, but this morning I refitted the Ultegra chain the bike came with and VOILA! No more noise at all! Sadly the Ultegra chain weighs 30g more, maybe the Dura-Ace/XTR chain will be lighter, will see when it arrives next week.
Hate to be a spreader of misinformation so thought I’d better share my findings. TLDR on the ZTTO Gen 3 cassette: Weight good, shifting good, price good. Very happy.