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Offshoreonly.com (https://www.offshoreonly.com/forums/)
-   Nor-Tech (https://www.offshoreonly.com/forums/nor-tech-143/)
-   -   Prop question - 340 Sport (https://www.offshoreonly.com/forums/nor-tech/352259-prop-question-340-sport.html)

NASCAT 04-12-2019 03:50 PM
I'll be in Fort Myers Fri & Sat & can run your L & R prop on my outer engines w/ my R prop in the center :party-smiley-004:

They look fast just sitting there.

Mentalpause 04-12-2019 04:23 PM
That would be a fun test.:D

hogie roll 04-12-2019 05:40 PM
Originally Posted by NASCAT (Post 4678961)
MP-
I'm definitely interested in your prop testing. Ben Robertson tried to get me to go w/ Bravo's on my 34's b/c he's had great success w/ them on the Fountain's back in the day BUT Terry & Trond insist that the NT hull does NOT like them.
I've inquired about SportMaster lowers & it was a No Go too.

My new boat and another were tested w/ the Max 5's, all I was told was that they didn't work & the Rev4's performed better. I'm not gonna lie that when I here NO to so many different tuning options that I begin to wonder if they just rather stick w/ what they know or stick w/ the proven but I really don't think thats the case. Nor-tech tends to constantly seek improvement w/ their products, whether that be design, options, fit & finish or performance.

Keep us posted!
Maybe they’re concerned that strong stern lift could create handling issues with the stepped hull?

Mentalpause 04-12-2019 05:49 PM
Originally Posted by hogie roll (Post 4681805)


Maybe they’re concerned that strong stern lift could create handling issues with the stepped hull?
Good thought. I didn't experience any ill handling with the limited time on the change last season, but it certainly might be a concern. With this work I had FJ cut off 3/4 inch of the diffuser ring and tweak the blades to carry the nose better. Should result in a bit less stern lift and better carry the nose at higher rpms. I guess time will tell.

Knot 4 Me 04-15-2019 07:21 AM
Originally Posted by Mentalpause (Post 4681781)
https://cimg7.ibsrv.net/gimg/www.off...07ab717fb.jpeg
https://cimg8.ibsrv.net/gimg/www.off...8e1a26d94.jpeg
https://cimg9.ibsrv.net/gimg/www.off...1abf58bdc.jpeg
FJ work done. Unfortunately due to Easter and a family obligation I won't be down to give these a spin until early May. But they look great!
I may be down this weekend. I know where the keys are!

cmoore7 05-07-2021 02:37 PM
What top speed did you end up achieving?

Mentalpause 05-07-2021 02:49 PM
70 at LOTO. Lake is 660 elevation.

OldSchool 12-23-2021 03:45 PM
Originally Posted by Mentalpause (Post 4788845)
70 at LOTO. Lake is 660 elevation.
Out of curiosity, what speeds does a 34 with twin 300's run?

Mentalpause 12-23-2021 04:13 PM
Originally Posted by OldSchool (Post 4816037)
Out of curiosity, what speeds does a 34 with twin 300's run?
62 top at LOTO with maybe 100 gallons of fuel and perfect conditions. Otherwise count on 60. Sobo showed 65.5 on the recall on their test run in Florida, likely with the 20 some gallons of fuel in it when it got delivered and at sea level. 400s upped top speed about 9mph given all other factors consistent. Interesting enough my over all fuel burn improved over 25% with the 400s.

Captain340 01-04-2023 12:42 PM
Anyone have experience with raising one hole on twin 350’s? New to me 2017 340 currently running rev 4 19p and just felt like the motors had more to give but props just maxed out. The conversation above leads me to believe that this is a good starting point. Any advice not to or go ahead and start this? I know I need some baseline data first just looking for ideals and advice.


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