Originally Posted by deklund

One of my riding buddies has a Litespeed Ghisallo. Last weekend I was on his wheel and noticed that he gets a big deflection in his rear wheel with each pedal stroke. I think his form is not great and he is definitely stronger in his right leg, but even so, I would guess he is getting 3-4mm of flex every stroke, enough that he needs to open up his rear caliper to keep from rubbing. I thought maybe his frame was cracked so I checked it as best I could when we stopped. It seems to be okay, but pushing on the crank while holding the bike shows a lot of frame flex. This frame is highly rated and respected, and I am sure it gives a nice ride, but how efficient can it be to flex the frame on every stroke? My Felt F1 is a lot stiffer and still rides well, but I wonder if the Ghisallo frame design is not good or maybe this is just the nature of full titanium frames?