Increasing stroke via conrod length?

[spetz]

Me and a stupid friend of mine are having an arguement.

He claims that you can increase the stroke (and therefore capacity of an engine) by altering the conrod longth and where it connects to the pistons.

I told him that he is stupid, and that the crankshaft is the sole part that governs the stroke in an engine.


Who is right?
Does conrod length change stroke distance?

[BlitZ]

Changing crank will increase stroke.. not conrod.

longer conrod = high comp less CC
shorter conrod = lower com higher CC..

think about it logically.. its fairly simple i think.. thats unless i have it all wrong

[spetz]

I did say it wouldn't change stroke
Cuz and TDC and BDC no matter how long the rod is, the difference in mm is still all up to the crank