Falicon's setup is a stroked crank with longer knife edge connecting rod . The longer rod minimizes the piston deflection but you need to raise the cyl also .

 

>>And whats up with the spacer problem on the stroker falicon, they have been saying you need to run a spacer but some people havent.

Let's see. Stroking the crank 4mm will raise the piston 2mm higher. A 5mm longer rod will raise the piston even higher, for a total of 9mm higher. So if they don't install a spacer plate, I guess they must not be bolting their head on. Or they only run the engine part of one revolution. <smile>

Now some folks are running the bike engine in their quad, and the bike does not use a spacer plate. That's kind of expensive, though.

We also race-prep stock cranks and install the Knife Rod. It doesn't use a spacer, but it's not a stroker.

 

I have a CP piston from VelocityRacingATV and my 470 made 1.5 more hp on the dyno than a similiarly equipped 480 [img]i/expressions/face-icon-small-wink.gif[/img]

 

Yea schweindi is right just because its a 480 doesnt meen its faster or makes more power then a 470, trust me on this one[img]i/expressions/face-icon-small-wink.gif[/img]

 

Yep. Engine size can deceive you. On our work with the Honda CRF, we found putting our larger cylinder on a stock stroke gave us very little increase in power. But stroking the crank on a stock-size bore made the engine come alive. Now, once we stroked it, our 98mm cylinder worked great. It's all about bore/stroke ratio and being able to achieve complete combustion before the crank rotates about 35 degrees after top dead center. This is one reason why increasing the bore beyond a certain point can actually decrease your power. Or make it freaky....

The Falicon 450cc Screamer kit for the Polaris Predator will stomp a stock 500cc Predator, even though it is 10% smaller.

But what do I know?

 

''There's no replacement for displacement'' LOL I laugh everytime I read that on these forums...