Will my 1527 handle a 645....?

[Make-a-Wake]

Will my 1527 in my 45" Dumas(my avatar) handle a 645? Its a 1y 1250kv.................i'm running a 445 right now and it just gets warm.........i dont know, seems just a bit big, but i got a balanced and sharpened one for free...........

[Rumdog]

Easily, very easily. You're not even loading it yet, which may be causing heat. I'd prop up to at least a x450. Kind of a big boat for a 1527 though.

[Make-a-Wake]

Its 6s by the way, forgot that part. The motor seems big enough to me, its not real heavy for the length and rides fairly high. Thanks, it seemed a bit large so i was looking for opinions...............a 642 kept popping into my head..............

[Rumdog]

WEre talking about a 1527. A ul-1 motor will spin a 45mm prop. I used the 1.5d on 5s2p with a x455 in a 34" cat. The motor will spin a big prop!

[sailr]

I run a 447/3 on my 1527 on 6S with no sweat. A 645 is a no brainer for that motor on 6S. In fact, try the 447/3. I have mine in an Aeromarine Sprintcat 40 and she hauls the mail!

[Make-a-Wake]

Wow............the 1527 has some balls huh? It is a sport boat basically, looks real scale with the full interior, windshield and padded rear sundeck and at the 35mph that it goes it looks good. But, we all want a little more speed, im thinking the 645 will push it to low 40's.

[Rumdog]

Yep, mine was in the same hull as sailr's, and ran a x455. Got me to mid sixties!

[Fluid]

An x645 is way too small for that hull, it will slip and be inefficient. The x447/3 makes more sense, but an x450 is not too big. The x450 has about the same pitch as the x645 but more blade area and a larger thrust cone for more efficiency - and thus more speed. Watch the heat but that prop should be easy for the motor. I run a pitched-up x455 with that motor in my SprintCat on 6S....


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[Make-a-Wake]

Wow.............a 645 too small............then im really underpropping it with the 445. I'll throw the 645 on it and see! Now a 548 is catching my attention............??

[Jeepers]

I run a x457 on a 1527 1.5d.
a 645 is a toy prop for that 1527 1y motor. guys at the Nationals were using a 455 on the same motor your using. and I believe it was mild for them.

[Make-a-Wake]

Man, i really feel like a wimp now..............wonder what kinda speed those big props would give the boat..................50's?