M445 and X642 question

[Kaotic]

I'm running a revolt on 4s with a 3674 and a M445 sharpened/balanced which just ran 58mph with my gps. Then I flipped to a X642 sharpened balanced and detounged and it only went 51mph. I thought for sure I would get a few more mph out of the X642. Am I wrong to think that??? I'm confused

[srislash]

The 642 may be pushing the bow in the water resulting in decreased speed? Any bad handling characteristics?

[Kaotic]

No actually the 642 kept the boat planted it did seem to run a little wet so I raised the strut up a little which did help but it only added 1-2mph. And temps where down about 10 degrees w/ the 642.

[Kaotic]

My goal is to break 60mph with this setup hopefully by just playing with props and tuning it in.

[srislash]

Well you could try the strut down a bit. It should've went down to compensate for the smaller prop ensuring it got enough bite. I have a DF 35" that picks up speed when the prop is down a bit which lifts the boat out of the water but sure makes her a little 'loose'. And if I run the x6 series it will submarine at speed. Just mentioning as a warning.

[dasboata]

I'm running a revolt on 4s with a 3674 and a M445 sharpened/balanced which just ran 58mph with my gps. Then I flipped to a X642 sharpened balanced and detounged and it only went 51mph. I thought for sure I would get a few more mph out of the X642. Am I wrong to think that??? I'm confused

the 642 is 2 MM smaller and has a bigger tounge, with a bit more pitch I would say your boat like the larger diameter try a cut done M447

[Kaotic]

the 642 is 2 MM smaller and has a bigger tounge, with a bit more pitch I would say your boat like the larger diameter try a cut done M447

Ok I'll try that, I'll order a M447 and cut it down. I've never done that before, so I'll have to read up on that.

[dasboata]

I have them in stock also and I can prepare it for you LMK thanks Chris

[Kaotic]

I have them in stock also and I can prepare it for you LMK thanks Chris

Chris, just sent you a PM.

[Kaotic]

Very cool keep at it man.
Mike

Thanks Mike!

[srislash]

Chris, just sent you a PM.

Chris will have that done awesome and to you in no time. My 32" Pursuit likes a tweaked 447 best so far as well.

[Kaotic]

Just ordered that cut down 447 from Chris, I can't to see what it can do!

[785boats]

Kaotic.
Just out of interest. What is the KV of that 3674 motor?

Cheers.
Paul.

[Kaotic]

Kaotic.
Just out of interest. What is the KV of that 3674 motor?

Cheers.
Paul.

I should of mentioned that, it's 2200kv.

[785boats]

Thanks.
The KV always helps to put the the prop sizes into some sort of perspective for us readers.

Cheers.
Paul.