bravo 3 or 1

[neal_skyline]

i have a formula 272 with 6.2mpi engines,im hiting 67mph ,its on bravo 3 legs,would it go better with bravo 1 x drives.

[Tony Davis]

probably, no need for a X though

[JOSH]

well a bravo three is good for up to 65mph
bravo two is good for up to 55mph
bravo one is good for high speed if you can swing the prop

but its not the limit of the drive its just what merc say.

josh

[neal_skyline]

so b1 should be the same top end or if not more

[JOSH]

yes it should be better but can you swing the prop you want.
the bravo 3 will have better hole shot.

josh

[larby]

Basically I think what they're trying to say is that the bravo 1 should give a higher top end, but this will call for a taller prop (more pitch).

As mentioned, the bravo 3 drives have much more grip. As they're on a big formula, this extra grip may be needed to get on the plane in an acceptable time, if at all.

Going down to B1's, along with putting on taller props may result in more top end, but you may never get there to find out. At best, expect much more time/effort getting onto the plane.

That's the way I see it!

James