Adjustable cranks

Carbon cranks with adjustment from 150mm up to 180mm. Q factor is 135mm, but easily adjusted by lenght of the spindle. BB is with no threads, and oversized for strenght. Spindle is hollow titanium tube. Spider is integrated. Chainring is with 130mm spacing. Weigh is 1000g including spindle, cranks and chainring, but it's still a solid object so weigh should come down when putting this together in real.

Why?, The reason is obvious, components with decent qualities aren't available, qualities such as lenght, weight, Q-factor, BB's etc. are not packed in one killer-product package, you should have 3-4 cranks, and combine those into one. Thats what is done in here. Adjustable lenght, sturdy BB, simple design, custom narrow, aero.

The cause is the world of standards where bikeworld stands, this is my little tiny snap into it's anxiousness to keep oldish axioms no matter how bad they are in modern standards point of view. Good example is the BB. The thread size and the shell radius is from the age when Adam met Eve. The shell and it's components were good for the use at that time, but today where DH, sick jumps and rude bashing is the use where bikes and it's components are put, shell is ridicilously underbuilt as is the bearings. Even that ISIS is great as a crank attachement, it lacks in BB, bearing balls are smaller than a head of the needle..
ISIS-Overdrive would be a perfect combination of strenght and easyness, sealed concept in a modern size.. but it lacks the support from the market, there are no bikes out there to use the standard, thatway ISIS-OD BB's are not widely available, if not at all. Dynamic bike world, where the wheel is allmost reinvented every year, some things never change.




I ran an FEA analysis to this part, material was 6061 aluminium.