I am not a mechanical clutz, I’ve been swapping out parts since my first bike, a secondhand Raleigh Chopper Original Tall version (1970) and a Raleigh Ultra Burner back in 1980 and 1983 respectively. I fitted my first crank – a Sugino spider – to the Tough Burner when I was 14. I dreamt of owning a Kawahara ET. Apparently Speilberg requested the ET red/white colourway? I digress.
I am not anti-Shimano, and it always seemed inconcievable that SRAM would beat Shimano when it comes to clusters (cassettes). However, I have been pleased with the SRAM 990. I have run loads of XT’s and have 3 I think in various disorderly parts bins around the house.
It is possible I was thinking, that maybe in the same way the Avid rotor issue I had (frequent warping of disc and subsequent scuffing) was totally cured with my new Hope Hooops. Thus maybe the unstiffness of the Shimano hub also caused the Shimano cassette to be inprecise. Each cassette was on a different rear wheel. I guess I have answered my own question, and my test was void. It’s amazing what difference a well built wheel makes.