prop dilemma

A general, non-powerplant specific, discussion on airboat technology, ie., hulls, rigging, polymer, etc..
SSR1320
Site Supporter - I
Site Supporter - I
Posts: 82
Joined: Sun Oct 16, 2011 2:08 pm
Location: Homestead, fl

prop dilemma

Post by SSR1320 » Sun Nov 30, 2014 11:19 am

I have a 13' DB ultra light with O540 straight valve spinning a 3 blade H. I wanted a 2 blade NGQ but it wouldnt fit would have to move everything forward 2-3". I put on a 72 whirlwind wisper tip and tried it out friday for the first time but didnt really feel any significant difference from my H. We did have a 20 knot headwind. sure that doesnt help in any kind of testing. Had some other issues that I need to fix and then try it again hoppefully on a less windy day. I'm just not sure if its worth $$$$ the change. Any help, suggestions, comments and/or opinions would help, thanks
13' Diamondback ultralight s/v O540 NGQ

fl cracker
Site Supporter - II
Site Supporter - II
Posts: 4030
Joined: Thu Aug 20, 2009 9:15 pm
Location: Sorrento,FL

Re: prop dilemma

Post by fl cracker » Sun Nov 30, 2014 11:51 am

You can always cut the Winglet off of the NGQ.
" I have two guns...
One for each of you "

2017 Hamant / SV540

User avatar
ptr34
Site Supporter - II
Site Supporter - II
Posts: 2836
Joined: Wed Oct 04, 2006 5:29 pm
Location: plant city

Re: prop dilemma

Post by ptr34 » Sun Nov 30, 2014 4:43 pm

Thats not issue cracker. Winglet doesnt stick out more than a regular Q. Sounds like metalworks is real close to back of boat
if u don't run dry .then should have gotten a bassboat
tons videos on YouTube ptr34

Rich Andrews
Site Supporter - IV
Site Supporter - IV
Posts: 6786
Joined: Wed Jun 15, 2005 9:20 pm

Re: prop dilemma

Post by Rich Andrews » Sun Nov 30, 2014 5:52 pm

Get an old signature series if u want a prop that will pull like a mule,and not ding up if a twig hits it.
I'll have my Manatee burger medium please...just say NObama

14x8 deckover FELBER 397ci.. HP ???..just stay back!!

LOHA is AHOL backwards

fl cracker
Site Supporter - II
Site Supporter - II
Posts: 4030
Joined: Thu Aug 20, 2009 9:15 pm
Location: Sorrento,FL

Re: prop dilemma

Post by fl cracker » Sun Nov 30, 2014 6:13 pm

Andrew, this one is going on a airboat so it needs to push lol
" I have two guns...
One for each of you "

2017 Hamant / SV540

User avatar
Deano
Site Supporter - V
Site Supporter - V
Posts: 4549
Joined: Thu Jan 06, 2005 11:16 am
Location: Inverness, FL

Re: prop dilemma

Post by Deano » Sun Nov 30, 2014 6:16 pm

Rich Andrews wrote:Get an old signature series if u want a prop that will pull like a mule,and not ding up if a twig hits it.
x 2
"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

User avatar
Tony480
Site Supporter - I
Site Supporter - I
Posts: 5277
Joined: Sun Sep 10, 2006 5:52 pm
Location: lake county

Re: prop dilemma

Post by Tony480 » Sun Nov 30, 2014 7:43 pm

If an h fit than there's no reason an ngq wouldn't

Rich Andrews
Site Supporter - IV
Site Supporter - IV
Posts: 6786
Joined: Wed Jun 15, 2005 9:20 pm

Re: prop dilemma

Post by Rich Andrews » Sun Nov 30, 2014 9:02 pm

fl cracker wrote:Andrew, this one is going on a airboat so it needs to push lol
Sorry, I used to pull Lycoming guys all the time with my old 470...my bad LOL
I'll have my Manatee burger medium please...just say NObama

14x8 deckover FELBER 397ci.. HP ???..just stay back!!

LOHA is AHOL backwards

wildman9
Southern Airboat Member
Posts: 52
Joined: Tue Aug 03, 2010 6:43 pm

Re: prop dilemma

Post by wildman9 » Sun Nov 30, 2014 9:23 pm

I call bs u r going too far now. I'd have too see that to believe I have a 180 that would've pulled that 0470 and that car barge u have.

User avatar
ptr34
Site Supporter - II
Site Supporter - II
Posts: 2836
Joined: Wed Oct 04, 2006 5:29 pm
Location: plant city

Re: prop dilemma

Post by ptr34 » Sun Nov 30, 2014 9:50 pm

Depends tony on how close it is to transom.
if u don't run dry .then should have gotten a bassboat
tons videos on YouTube ptr34

SSR1320
Site Supporter - I
Site Supporter - I
Posts: 82
Joined: Sun Oct 16, 2011 2:08 pm
Location: Homestead, fl

Re: prop dilemma

Post by SSR1320 » Mon Dec 01, 2014 6:41 am

It does hit the transom
13' Diamondback ultralight s/v O540 NGQ

fl cracker
Site Supporter - II
Site Supporter - II
Posts: 4030
Joined: Thu Aug 20, 2009 9:15 pm
Location: Sorrento,FL

Re: prop dilemma

Post by fl cracker » Mon Dec 01, 2014 8:18 am

What hits? Winglet or trailing edge?
" I have two guns...
One for each of you "

2017 Hamant / SV540

fl cracker
Site Supporter - II
Site Supporter - II
Posts: 4030
Joined: Thu Aug 20, 2009 9:15 pm
Location: Sorrento,FL

Re: prop dilemma

Post by fl cracker » Mon Dec 01, 2014 8:20 am

I would think a 68" NGQ would fit.
" I have two guns...
One for each of you "

2017 Hamant / SV540


User avatar
BRMaynor
Southern Airboat Member
Posts: 23
Joined: Sun Jan 31, 2010 5:30 pm
Location: Melb, Fl.

Re: prop dilemma

Post by BRMaynor » Fri Dec 05, 2014 10:55 pm

Terry/All - How does the winglet not stick out any further than the Q? I guess you could call this measurement the height of the blade and I would think the NGQ has to be taller with it's winglets versus a Q or H or any other blade without the winglets right?

Seeing nothing but positive reviews about the NGQ has me considering it over my Q but I am also concerned with having to move everything foward as well. Was only planning to leave 3-4" of space between the prop and transom as I want a safe distance there but also want the motor back as far as possible in the hull. If the NGQ requires more space, I would hope it's performance is worth having the weight further forward in the boat... Maybe I'm splitting hairs here regarding weight and the matter of a few inches but how much taller is an NGQ than a Q?
"The Constitution shall never be construed to prevent the people of the United States, who are peaceable citizens from keeping their own arms . . ."

- SAMUEL ADAMS

User avatar
Hog Guts
Southern Airboat Member
Posts: 710
Joined: Sun Dec 15, 2013 10:20 pm
Location: Cocoa, FL

Re: prop dilemma

Post by Hog Guts » Sat Dec 06, 2014 7:49 am

I have two blades you can install on your boat to check while I have them off my boat. The length is measured to the winglet tip so length is accurate and I believe the whole prop is swept in such a way that the rear of the winglet isn't just sticking back further than another prop - at least not the whole difference. You should call me and just try it while you have the chance I think you live 3 miles away.


Sent from my iPhone using Tapatalk

SSR1320
Site Supporter - I
Site Supporter - I
Posts: 82
Joined: Sun Oct 16, 2011 2:08 pm
Location: Homestead, fl

Re: prop dilemma

Post by SSR1320 » Sun Dec 07, 2014 7:21 am

I'm going testing again today hopefully the wind won't be an issue bc its been blowing pretty heavy all week down south
13' Diamondback ultralight s/v O540 NGQ

SSR1320
Site Supporter - I
Site Supporter - I
Posts: 82
Joined: Sun Oct 16, 2011 2:08 pm
Location: Homestead, fl

Re: prop dilemma

Post by SSR1320 » Sun Dec 07, 2014 3:28 pm

Lighter wind today still didn't feel much difference in the whisper tip to my 3 blade h not much if any quieter just a little mid range but not enough to warrant the change I was getting about 2550 - 2650 rpm with the wind and against it is that what it should be???
13' Diamondback ultralight s/v O540 NGQ

User avatar
sidejobs
Southern Airboat Member
Posts: 1042
Joined: Fri Oct 01, 2010 7:41 pm
Location: chocolate city, fl

Re: prop dilemma

Post by sidejobs » Sun Dec 07, 2014 3:31 pm

You need to turn that whisper tip 2800-3000. Then you may see a difference.
________________
IDIOT !

lariat
Southern Airboat Member
Posts: 345
Joined: Sun Mar 27, 2011 8:27 pm

Re: prop dilemma

Post by lariat » Sun Dec 07, 2014 3:49 pm

I've tried several different props on my boat and have found some subtle differences, but nothing earth shattering with any of them. Here is what I've run. 5 blade warp, 3 blade NGH, 5 blade Sabre, 2 blade NGQ, 6 blade staggered Sabre, and just today tried a 3 blade Q. The biggest difference I found was the noise differences, and some pushed a little better at different RPM ranges, but non of them have been heads and shoulders above the rest. All around, I like the 6 blade staggered the best, and probably liked the NGH the least.

SSR1320
Site Supporter - I
Site Supporter - I
Posts: 82
Joined: Sun Oct 16, 2011 2:08 pm
Location: Homestead, fl

Re: prop dilemma

Post by SSR1320 » Sun Dec 07, 2014 7:46 pm

Just wouldnt get that rpm
13' Diamondback ultralight s/v O540 NGQ

User avatar
sidejobs
Southern Airboat Member
Posts: 1042
Joined: Fri Oct 01, 2010 7:41 pm
Location: chocolate city, fl

Re: prop dilemma

Post by sidejobs » Sun Dec 07, 2014 7:51 pm

Why couldn't you get that rpm ? It's adjustable ..........
________________
IDIOT !

SSR1320
Site Supporter - I
Site Supporter - I
Posts: 82
Joined: Sun Oct 16, 2011 2:08 pm
Location: Homestead, fl

Re: prop dilemma

Post by SSR1320 » Mon Dec 08, 2014 6:29 am

It gets 2800-2900 rpm on the trailer
13' Diamondback ultralight s/v O540 NGQ

User avatar
sidejobs
Southern Airboat Member
Posts: 1042
Joined: Fri Oct 01, 2010 7:41 pm
Location: chocolate city, fl

Re: prop dilemma

Post by sidejobs » Mon Dec 08, 2014 7:53 am

That's good. You should gain a lil on the water. It must have been hurricane winds to drop you 3-400 rpm :shock:
________________
IDIOT !

Striker543
Site Supporter - I
Site Supporter - I
Posts: 1014
Joined: Wed Oct 13, 2010 11:03 pm
Location: Miami/Orlando, Fl

Re: prop dilemma

Post by Striker543 » Mon Dec 08, 2014 7:55 am

It's getting 28-2900 on the trailer but only 2550-2650 on the water? Something isn't right there. If anything you should gain another 100 rpms or so on the water compared to on the trailer.

Post Reply

Return to “Airboat Tech”