Originally Posted by
robow
As we touch upon this subject again, may I ask if anyone has dropped the large coin on the White Industries variable square crank and chainrings?
MR30VBC ? White Industries
With this system you can have a double crankset
With an outer gear that ranges from 38-52 in even tooth increments and an inner that ranges from 24-38 in even tooth increments ? In doing my math, I could replace my triple 46-36-24 with a double 42-24, 11 speed cassette, 11-34 or 11-36 and give up almost nothing. Same low or lower and only giving up one unit on the high end which rarely gets used. I would spend 90% of my time in the 42 ring anyway with the 24 being more of a bail out on steeper climbs. 103" to 18" or 19" gear inches without too big steps in between. Hmmmm
Your definition of “big steps in between” and mine are vastly different. Gear-calculator gives
this comparison. The 42/24 crank has fairly good steps from 106 gear inches to 32”. It has fairly good steps from 60” to 18”. The giant hole in the middle is troubling, however. Changing from the 42 to the 24 is a gigantic step. That’s the problem I’ve always had with compact doubles and the wide range doubles are even larger jumps. The transition in a triple is much smaller and less jarring.