68 NGQ PITCH & RPMS

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GMAC 76
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68 NGQ PITCH & RPMS

Postby GMAC 76 » Mon Jun 27, 2016 5:35 pm

Got my 68 ngq prop put on today...pitch is set right on the #3 mark turning 2740 rpm on the water at wot....boat runs really well at that setting....my question is am I out of the "sweet spot" as far as pitch and would I be better off taking a little pitch out and bring the rpms up closer to 2800-2850 and the pitch closer to the 2 1/2 mark....I have been told that on the shorter props that if you have to put the pitch over 2 3/4 mark to bring down the rpms you are just slowing down the engine and not gaining any more push
Last edited by GMAC 76 on Sat Jul 16, 2016 10:22 pm, edited 1 time in total.

Swampbuggy
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Re: 68 NGQ PITCH & RPMS

Postby Swampbuggy » Mon Jun 27, 2016 6:22 pm

Well old school is 2800 on everything But to do it right take the S/N off the motor go to there web and look it up. My 520 is 2650 - my 470 is 2800 - and the 320 is 2750 and thats was where they run the best

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hogdoggin
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Re: 68 NGQ PITCH & RPMS

Postby hogdoggin » Mon Jun 27, 2016 7:58 pm

Every boat is different. And every person has a different opinion on how they like there boats to run. Best thing you can do is take your torque wrench Out with you and try different RPMs and see where you like it. I have a 74" NGQ on my 540 I turn it 2900 I've tired it from 2700 all the way to 3000 RPMs where I have it set I like it. Every boat is set up different theirs not one sweet spot for each prop.

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southern safaris
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Re: 68 NGQ PITCH & RPMS

Postby southern safaris » Mon Jun 27, 2016 9:08 pm

I have a 74" ngq as well but its on a dd454 and its little past the 2 mark and it loves it at 2800 ish ive spun it higher and lower but thats where mine likes it the best
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lariat
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Re: 68 NGQ PITCH & RPMS

Postby lariat » Tue Jun 28, 2016 6:34 am

Go ahead and get the longer hub. Sounds like you have plenty of motor for it!


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Deano
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Re: 68 NGQ PITCH & RPMS

Postby Deano » Tue Jun 28, 2016 7:48 am

lariat wrote:Go ahead and get the longer hub. Sounds like you have plenty of motor for it!
I will add that, given other things being equal, diameter will trump pitch where all out thrust is concerned.
Whoever is hesitant to believe that, may consider how many big helicopters they've seen with a six foot rotor. :idea:
"The suppression of uncomfortable ideas may be common in religion and politics,
but it is not the path to knowledge; it has no place in the endeavor of science."
- Carl Sagan

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Re: 68 NGQ PITCH & RPMS

Postby FLboy200 » Wed Jul 06, 2016 12:13 pm

Hey GMAC76 I'm new to the site but also have a 200 that's going on a 13ft ricochet an I have the Q blades now but was woundering how the NGQ would do with that set up. Just woundering how you like the prop an did u go with a 68 or 70. Thanks in advance. Stephen

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Re: 68 NGQ PITCH & RPMS

Postby GMAC 76 » Thu Jul 07, 2016 11:12 am

FLboy200 wrote:Hey GMAC76 I'm new to the site but also have a 200 that's going on a 13ft ricochet an I have the Q blades now but was woundering how the NGQ would do with that set up. Just woundering how you like the prop an did u go with a 68 or 70. Thanks in advance. Stephen

Stephen, I also had the Q blades and the wide whispertip on my 200 both at 70" and I can honestly say that on my particular setup the NGQ 68 was significantly better in every way especially the throttle responce....I stayed with the 68" on my little sled ...I was able to set the pitch at 2 1/2+ and turn it to 2820 with a digital tach wot on the water...I especially liked the quick throttle response of the 68"...I must admit I did not try the 70" so I cannot honestly say if it would be better but i was so happy with the 68 i just kept it...like the guys said before every boat and engine combo will be different so the 70 may work better for your setup i don't know but i can tell ya for sure the NGQ 68-70 is the prop to use on our 200's no question!!


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