Cvincent's PH18

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TomW1
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Re: Cvincent's PH18

Post by TomW1 » Tue Mar 12, 2019 12:04 pm

cvincent wrote:
Tue Mar 12, 2019 9:08 am
Thank you BassMunn and TomW1. I have a powertech NRS4 13.25 x 17 prop. I will see how the boat performs with this prop and go from there.
Ran some rough numbers for you cvincent try your 17 pitch prop but you may need to drop as low as a 15 to get your revs up the the 6300 max revs that motor can run. Max speed at 6300 was 47 mph. You probably want to run with at least a top number of around 6100 for max performance. Anything above 5500 would be okay as that is where max HP is reached but your not reaching max performance of the engine till you reach 6300.

Looking forward to you getting that boat on the water.

Tom


Restored Mirror Dinghy, Bought OD18 built by CL, Westlawn School of Yacht Design courses. LT US Navy 1970-1978

cvincent
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Re: Cvincent's PH18

Post by cvincent » Tue Mar 12, 2019 2:43 pm

Thank you Tom for crunching rough figures on the prop. After a water test I will post the performance numbers here along with estimated weights. A local prop shop can take a few inches of pitch out if needed.
Completed D15, Building PH18

DAYTRIP
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Re: Cvincent's PH18

Post by DAYTRIP » Tue Mar 12, 2019 6:07 pm

Sure looks great. Very nice work

cvincent
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Re: Cvincent's PH18

Post by cvincent » Wed Mar 13, 2019 10:09 am

Thank you Daytrip.
Completed D15, Building PH18

BassMunn
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Re: Cvincent's PH18

Post by BassMunn » Wed Mar 13, 2019 3:41 pm

That 17 pitch will probably be low if you're looking for speed, but you'll get a nice holeshot.
It's not apples to apples as I had the 16ft Phantom with a 2 stroke, but I ran a 17 pitch BRP SS prop, topped out at 47mph GPS speed but I could get on plane in about 5ft :lol: That boat could have happily run a 21 pitch prop and peel your eyelids back.
For your rig I think the 17 will work just fine

cvincent
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Re: Cvincent's PH18

Post by cvincent » Wed Mar 13, 2019 9:20 pm

Thank you for the information BassMun. I reviewed your phantom thread and your boat was a fine setup.
Completed D15, Building PH18

cvincent
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Re: Cvincent's PH18

Post by cvincent » Sat Mar 23, 2019 11:03 pm

I spent today fishing throttle cables, motor wiring harness, battery cables, etc.. through the motor rigging tube. I also installed my new switch panel. I plan to install the hydraulic steering tomorrow.

Image

Image

Image
Completed D15, Building PH18

Browndog
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Re: Cvincent's PH18

Post by Browndog » Sun Mar 24, 2019 7:21 am

A custom dash panel really makes a difference. It is one of the best upgrades I made for my brother’s boat.

Your boat is really looking sweet.

cvincent
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Re: Cvincent's PH18

Post by cvincent » Sun Mar 24, 2019 1:43 pm

Thank you Browndog.
Completed D15, Building PH18

BassMunn
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Re: Cvincent's PH18

Post by BassMunn » Mon Mar 25, 2019 3:37 pm

Nice switch panel.
Are those proper Bocatech switches or the Chinamese copies? The reason I ask is that I have the Chinamese ones and they are supposed to be IP67 rated, Stainless steel and 5amp ratings, but just not sure how they are going to hold up and wondering if you have any experience with them?

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