Originally Posted by vomitron
Also, BB shells on italian track frames are not designed to take the load that road frames are.
Think of it like this: On a road bike, the forces are being absorbed by the extra chainrings and stuff. On a track crank, there is extra material to absorb the extra load (which is why they have a bigger bolt pattern. Bigger pattern = more metal). This is why you need track cranks on a track frame.
Also, you should really take it to the track sometimes so the metal will get a chance to stretch. High speeds allows the metal and the joints to stretch.
If it's too much of a financial burden, you might just want to sell the frame. What size is it?
the scientist in me cringes at this statement...I'm not sure what you're trying to say, exactly...but remember newton's laws. "extra material to absorb the extra load" wtf??? "high speeds allows the metal and the joints to stretch"" (double)wtf???
A stiffer crank (such as a track one) is going to transmit
more force than a less stiff one (such as a non-DA road) to the bottom bracket. The more metal in the crank, the less it's going to flex and the more it's going to transmit force somewhere else (this is what we want, we want that force transmitted to the rear wheel through the chain.)