strOOOOOOOke????

[EMS]

Hi-Falicon in the past limited the stroke to 5mm (thay recommended 2-4mm for longevity).

The limitation you may run into is not the rods and the crank, but may be piston/ring problems. If Falicon recommends these numbers particularly for the CBX, the maximum stroke would be around 58-59mm. This will give you a mean piston speed of close to 20m/sec at 10,000 rpm, and I can see why Falicon would say that 2-4mm should be the ideal for longevity. Long stroke motors are usually not high rev units.

[rbarber]

I think a speed of 20-25m/sec should still be acceptable for motorcycle pistons. The long 6-cylinder crank and the oscillation and bending would concern me more, though.

[chuck_b24]

Hi-Falicon in the past limited the stroke to 5mm (thay recommended 2-4mm for longevity).

The limitation you may run into is not the rods and the crank, but may be piston/ring problems. If Falicon recommends these numbers particularly for the CBX, the maximum stroke would be around 58-59mm. This will give you a mean piston speed of close to 20m/sec at 10,000 rpm, and I can see why Falicon would say that 2-4mm should be the ideal for longevity. Long stroke motors are usually not high rev units.

...hello the 750 F has a 62mm stroke!! 900-1100F has a 69mm stroke!! why should a CBX stay below 60mm???...not because of piston speed.....chuck

[cbxtacy]

They have longer rods then the CBX. Rod length effects piston speed, piston acceleration, and lateral forces on the piston.

[chuck_b24]

HI............I can use either a 750 or a 900 deck height & either rod size(will be using a 17mm pin size for 1100 overbore pistons).....chuck

[Chris]

HI............I can use either a 750 or a 900 deck height & either rod size(will be using a 17mm pin size for 1100 overbore pistons).....chuck

Keep us updated on your progress. You are working on a very interesting project.