690 gearing thread. 15-42(boldor special) vs 16-45
So beating this poor horse again.
From my understanding 15-42 gearing is what everybody loves to run, which makes sense.
But from what I've read, 16-45 gearing is almost exactly the same compared to 15-42.
So, the big and simple question, is why does everybody buy a 15 tooth front and a 42 tooth rear, instead of just buying a 45 tooth rear and only change one sprocket?
More teeth on the front, one less sprocket to buy and switch out, I don't see the downside?
Is the chain not long enough to fit over a 16-45?
Enlighten me duke friends.
And yes this deserved another entirely new thread about gearing.
2016 - 690 Duke