Prop Question?

byrdman64

Cadet
Joined
Jun 23, 2007
Messages
14
Just did a engine swap from a 21 ft nitro to 1987 18ft skeeter SF-180 1250# lbs wt. install a 1989 evinrude XP-175 (4500-5500 rated i believe)with a Raker 14 1/2" x 24 prop ser # 394755 .
also added a Jack plate.
Did a few passes on lake and she with easily pass 5500 WOT. could not hold her WOT had to back off
any ideas where to start with a new prop to get back in playing field. really not concerned with high speed just want to keep the motor together.

any Ideas guys!
 

Dhadley

Supreme Mariner
Joined
Feb 4, 2001
Messages
16,978
Re: Prop Question?

Why couldn't you hold it wide open? Was it handling funny after 5500?
 

byrdman64

Cadet
Joined
Jun 23, 2007
Messages
14
Re: Prop Question?

no the rpms were headed for 6000+
she comes up and planes out fine you can trim her up but you must be mindful of rpms so you have to throttle back. almost forgot she is a SF-175 17.82 ft
 

Dhadley

Supreme Mariner
Joined
Feb 4, 2001
Messages
16,978
Re: Prop Question?

What's wrong with 6000 rpm? How fast was it at 6000?
 
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