Advertized trends create demand... SRAM is pushing 1 by stuff hard, closed down their IGH production..
I have chosen differently I like IGH, I skipped over the 'i got more speeds on my cassette than you do' game..
But cope with it in my shop jobs.. those 10-42t cassettes are only seeming a good deal until you wear 1 out and have to open your wallet replace it...
in a mid drive electric bike you only have 1 chainring. 1 cog on IGH vs a big expensive cassette, with vulnreable ti bending RD .. you pick..
I see the parabolic arc of the cogs diameter increases, are trying to widen gear ratio gaps as they get lower..
an IGH like Rohloff each of the ratios are a % of the next one , so are getting wider by 13.6% going up, narrower going down..
...
Last edited by fietsbob; 04-20-18 at 08:58 AM.