Was wondering if its possible to run cranks of two different brands that are compatible with the same bottom bracket on one bike. For instance I want to buy a stages hollowgram power meter for my road bike that is already equipped with hollowgrams but if I then wanted to have power on my TT bike that has the same length cranks but they are FSA gossamer could I put the hollowgram power meter left crank on with the right crank remaining the fsa gossamer? Hope this makes sense.
Thanks
Can’t see any mechanical reasons why not, only cosmetic ones. So if you don’t care about your bike looking a bit odd, give it a go!
Thanks for the reply. Yes I am speaking purely from a functional/economical standpoint as you can only see one side of the bike at a time anyway 
could I put the hollowgram power meter left crank on with the right crank remaining the fsa gossamer?
Thanks
NO. A Hollogram crank arm will not fit on a FSA spindle.
Why not swap the entire crank with Stages or to the TT bike? If the BB’s are the same it will take you an extra 10 seconds to swap the entire crank. Its so easy a monkey can do it.