Originally Posted by
Jipe
The 9-42t cassette is the same type as the 9-34t cassette they still use, also from E-Thirteen with a similar price.
The 9-42t cassette is not compatible with the Dura ACE derailleur the use with the 9-34t cassette, they had to use a MTB derailleur.
I am afraid that these 9-34, 9-39 and 9-42t 11s cassettes from E-Thirteen will be discontinued soon now that all manufacturers switched to 12 or 13s for their high end derailleur.
I do not understand why they do not mount the SRAM Red XPLR 12s designed for 10-36t or 10-44t cassette like I have of my Bike Friday All-day? Maybe they received a huge discount on the now replaced SRAM Red 12s road limited to 10-33t?
10-44 would not be bad. I wonder the same things.
"...huge discount...": Cessna had designed a new model of plane, the 177 Cardinal. Designed for a 180 hp engine. But when launched, it came with a 150 hp engine; Originally I heard it was because they got a tremendous deal on the 150 engines, but I read now it was (also) because they had moved the pilot (and thus engine) forward with respect to the high wing, for better visibility when turning, that was the primary feature, and it turned out to be too nose-heavy, and the 150 hp engine was lighter, so corrected that. (Never mind that later ones came with 180 hp, although a different engine than the previous one.) Anyway, with 150 hp, it would not take off in the distance that was specified in the operating manual. Especially under hot or high conditions. People died. Tests were done, Cessna was sued, successfully. The 150 hp Cardinals were STC'ed (supplemental type certificate) to install 180 hp if folks wanted. The incident was one reason Cessna stopped building light planes for 10 years, until the General Aviation Revitalization Act of 1994, which shielded manufacturers from liability for aircraft beyond 18 years age, even if manufacturer negligence was a cause.
So... yeah, cost discounts driving specifications... it wouldn't be the first time.