Prop pitch and RPMs

[archer]

Quick question....

To lower wot rpms I would need to go 'up' in prop pitch. Is this correct?

Thanks

[Shep]

You got it.

[archer]

You got it.


Thought so... thanks

[TomP.]

Don`t foreget if you change manufactures and style of props you might get a huge change in RPMs.

[archer]

Don`t foreget if you change manufactures and style of props you might get a huge change in RPMs.

Thanks....

[reelxtc]

Hi,

The "rule of thumb" is the RPM will change approx. 200 RPM per inch of pitch change.

As stated, the RPM will lower with increased pitch.

[turtle chain]

I have a question for you guy's I have a 19 tempest on a 175 proxs on a triton allure with a manual jack plate I am running at 5800 rpms 53 mph top speed and 50 mph loaded with guy's and gear just right,But I was thinking of having the prop tweeked at DAH to get better traction and even better hole shot.So this will lower my rpms ,Then I would raise my motor to get my rpms back to 5800 correct?? and would this have any ill effects on the way this boat runs in rough water or would I have to lower my motor for the rough stuff thank's much Tom

[peter8]

I had DAH work a few props for me. You are correct In assuming you might have to raise the motor. After I found the best prop = F150 w/ 21 yam.pro series. I had John work it. I gained about 2-3 mph on the top end. But the best gain was in the mid range where rpm's & mph's were similar. Example 4000rpm=40 mph etc. The boat ran way more efficient at crusing speeds . He usually will add more cup & a mirror polish job which hooks up better providing less slip. I just had him do a trophy for my current boat w/ 225 opti and had similar inprovements but, I didn't have to raise the motor this time as the rpm's stayed within the motor's range. Each boat/motor combo will be different. You should see a marked inprovement after the DAH job. Have fun... After the additional cup you will actually hoild better in the rough stuff1