Originally Posted by Gary C

I was told that the regular bottom PQ's were set with a low X and the 280 with the step is a higher X That is why the 4 blade on the 280's. That is also the reason the 260 and 270's work with 3 blade props. It is basicly trial and error. Most Hi x demension boats are harder to get up on plane, but once on plane are faster on the top end. There is always a trade-off.
pkspx, if you aren't already you will probably need to go to a 4 blade prop with that shorty.

Originally Posted by Fast Forward

Just wondering how one determines whether your X dimension is set high or low? Or if it's simply a trial and error situation?

Originally Posted by pkspx

have the Hydromotive 4blade 23p but looking to go 5blade with the IMCO shorty. From the comments on this thread, makes me wonder if I am wasting my money. I was told Power Quest has the drive too deep because it is a pleasure boat making it easy for anyone to get off plane. Am I actually going to notice any difference in speed or stability? What else can I expect?

Originally Posted by Knot 4 Me

You will definitely have to go to a 4-blade. Depending on your HP and gearing, 5-blade may be too much to pull. Plus you may end up roaching your drive if you get that 5-blade hooked up. You can go too high on X dimension and lose speed. Worst case is you go back to the stock lower or use spacers at 1/2" increments to find the sweet spot. Takes time, testing, and $$$$. Good luck and let us know how it works out!

Originally Posted by Not Right

He felt like the prop was getting too much air.