Originally Posted by
reppans
Yes small-wheeled folders have fat tires and long stems, seatposts, and single tube frames, not to mention some with suspension, that will all feel a bit flexy and power-robbing, but after measuring it with a GPS, for me, the difference was a lot smaller than it felt... (the folding advantages are massive in comparison).
My training ride times were pretty close across a Salsa La Raza and Bike Friday NWT. On the order of what one might expect for a 5 pound difference in weights.