Only one way to find out, what prop were they using?
I believe the B&W prop in the test was a 30 pitch hydromotive T4-X. I know Todd ran right around 100 with the same prop on his GS with the 225 Promax. This has always been a prop I want to try!!! Along with a 27 Quad.
I dont think it really matters at all if a motor has more grunt in the low end its not going to be any faster up top if the motor is limitted by rpm. Your only going to be as fast as your rpm dictates. I think the variables with prop to prop is pretty high though. No two props are created equal and that goes for the hull and power plant also.
Ive tryed alot of 26 and 28 props 3 blade and 4. With the 6750 limitter and without. With stock heads and with 33cc heads stock limitter. With oil injection and stock limitter and without stock limmiter oil injection and premix. Im now 7500 rpm limitter 33cc heads premix. The only time see any differance at all from bone stock is with 26 or less pitch props.
Very few 28 pitch props I can get to 7000rpm in a 4 blade. Some 3 blades I can get there with but thay have been far and few. At even to 1/4 above I can get them to 7000 as long as the prop still has good bite that high. Some dont. They just slip. The props with more rake seem to still lift OK even to above.
Its all relitive really. if you run high you can get some speed with bigger wheels due to less drag than the fact the props half in half out. But only if they are designed to be run as surface props. Todds are. But Trophys arnt!! Youll slap the blade off a trophy running them to high to often. They arent designed to be run that high. I would try and run your 26 Trophy 1/4 above. Youll probably find youll loose speed anyway. At 1/4 below they seem to like that and move the hull better in the drink a little more due to there blade design over a Hydromotive that has a little more rake and not as round of tips.
You could get the limmiter raised to what ever ya want up to 7500 but I do a guy who had his to 8000 and it never broke? Ive been running 25 & 26 pitch 3 blades alot the last few of years to 7500 rpm no issues. Im ussually in the 7100-7200 range most of the time on plain unless its rough out.
To run 90ish with a 26 on a stock 225 with 1.87 is very very rare. Im at 7300 when ive touched 90 with a 26 3 blade at 1/4 above or even? I cant pull my 25 Trophy to 90 because I dont run it that high. And frankly I dont ever plan on it.:big grin I get 86 or so with it at 1/4 below and thats all shes got just over 7000 rpm also. Its a piece of crap prop though also. Ive taken a hammer to it more than once trying things with it.:big grin Its a 3 out of 10. But does the trick.
Ive heard of quite a few guys who have done the math and claim zero slip or 3%. So I dont dout it. Ive had a Spinelli that had very LOW slip i dont remember what but way below 7% of the norm. You have a really good setup and really good motor and prop thats all. Fishen firman once said that there was some Promax,s that accually ran threw there limitters in the 96-98 range? Maybe you have one of those? In any case awsome and dont change a thing.
And not "douting" 0% slip.............oh, just forget it. I'll buy an engraving tool, change the pitch on my props with it, and then I too will be able to join the elite class at 0% slip by placing my "new" pitch number into the formula.
