88" JW blades

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F0zzy2
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88" JW blades

Post by F0zzy2 »

Anybody have any experience with these longer blades? I'm being told I'll get more push out of running 5 of these compared to my current 4 super wide blades.
TIA
18X8 Alumitech- 632 BBC- CH-4 2.67 ratio - 5 84" Whirlwind EX

ak375hh
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Re: 88" JW blades

Post by ak375hh »

Talking with Darren they don’t make them left hand rotation yet.

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PAINKILLER
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Re: 88" JW blades

Post by PAINKILLER »

I always go with area of surface of blds and my torque curve of my motor and what rpm I intend to turn the motor two of which never match the prop
MATTHEW 25:35-45 LS 406 82 4bld WaterWalker falcon 2.68 ox box
LS 427 80 3 Bld WaterWalker Maximus 2.68 ox box :rebel:

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F0zzy2
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Re: 88" JW blades

Post by F0zzy2 »

Darrin was the one that recommended them over the superwides. He said they would have then in left hand rotation by February.
18X8 Alumitech- 632 BBC- CH-4 2.67 ratio - 5 84" Whirlwind EX

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Prototype
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Re: 88" JW blades

Post by Prototype »

The gear box version is well worth the effort and I'm a S blade kind of user.
If matched in belt or as stupid as it sounds a DD or AC you might notice a smoother prop?
It does not have a snap factor like the superwides if your experienced with their snap... most aren't with pushing 10 inch carbon props!
If your twisting 5 88's anywhere near 20,, that somewhat dictates 700-900 with a 268 drive and very healthy power plant.

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F0zzy2
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Re: 88" JW blades

Post by F0zzy2 »

That’s exactly what I have proto, I called Darrin about running 5 S blades but he said the longer newer technology of the SW blades would push better.
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18X8 Alumitech- 632 BBC- CH-4 2.67 ratio - 5 84" Whirlwind EX

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Prototype
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Re: 88" JW blades

Post by Prototype »

If your retro fitting and Cage is close on the forward side, buy the spacer for the new hub design! The new hub of the new J's is 1-3/8" forward and either motor can now be pushed back from say a S blade hub user.
I wish I knew the new specs before but the 88jw is smoother and the torque roll is a lot less vs the S series.
If you use their specs of 2 inch clearance forward and aft and its diameter, your good!
If not?,,,,,, it's still worth having them trimmed to need or build a new cage, or do the american airboat thing with center hoops expansion clearance.
It just depends on how far a person is willing to go to clear 88's vs 82's, but I can say they cut a lot better with a ton less torque roll on the gearbox configuration than a S blade. They also out turn an 82 ngr by 10-12 pitch settings blade for blade on the 268 level!

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F0zzy2
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Re: 88" JW blades

Post by F0zzy2 »

Thanks for the feed back Proto, yes they will be going on a new boat with a cage built for the 88's. I run mostly ground so my worry was they wouldn't push as much as the S blades.
18X8 Alumitech- 632 BBC- CH-4 2.67 ratio - 5 84" Whirlwind EX

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Prototype
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Re: 88" JW blades

Post by Prototype »

Good,
At five 88's I think you'll be happy vs 5 S's twisting your rigging and hull all over the place. Not that S's are bad for couple decade old tech or anything? I would like to get some big Jx blades at four or more to compare but those final inches are tech not realized or refined yet for airboats!
I'm sure someone on here can post 5 S blades at 81 or 82 pitched @ 1.75 to 3.? behind a 268, but most don't push 700 plus on a public forum.

Pato Sicario
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Re: 88" JW blades

Post by Pato Sicario »

I’m pushing 5 82’ JX blades, but a 2.55 box. Not exactly what you’re trying to compare, but happy to answer any questions and give feedback if you want to PM me.
16x8 Utah style Diamondback. Steve Morris 427 LS3 w/3.6L Kenne Bell blower, Holley EFI, 2.55 OxBox swinging a 5 blade 82” JX

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Prototype
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Re: 88" JW blades

Post by Prototype »

Pato Sicario wrote:
Sat Feb 01, 2020 8:26 pm
I’m pushing 5 82’ JX blades, but a 2.55 box. Not exactly what you’re trying to compare, but happy to answer any questions and give feedback if you want to PM me.
Pato,
Where do you run?
I'd love to try 5 82's jx's vs 4 jw's 88's!
Also compare blower performance to my blower shopped stocked displaced ls6.
2 or 20 on the prop seems to almost define real effeciency with proper gear and torque and fuel burn. Point and shoot aside of those factors to what actually works.
Not much on here to over effecient boats above 600hp, but tons of over powered boats and mega tons of underpowered or incorrect prop'd!

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Re: 88" JW blades

Post by Pato Sicario »

I run my boat in Utah, specifically for duck hunting.
On the dyno my engine came in at 1143 peak TQ at 4300 rpm. 1119 peak HP at 5900 rpm, 93 octane. I told the builder to focus on 5400 rpm as maximum, turning 5 JX blades and a 2.55 box at Darrin’s recommendation over at Sensenich.

My Alaska/Utah boat is prob around 4,000 lbs all in with couple of guys, gear and 50 gallons of gas. It runs dry very well. I have the blades pitched for push not speed at 20 degrees. Max speed is 60 mph at 5,000-5,100 rpm.

Keep in mind that’s at 4200 in elevation. Most things you read tell you that you lose 12-15% to that elevation. So I’ll use 13.5...using that loss my new numbers at 5,000rpm are 906HP and 957TQ.

Our hunting season has just ended. So I’ll finally get around to calling the engine builder and do a true tune at this elevation. It was tuned in Florida and set in Learn Mode so I could just turn it on and go.

There is a guy in Florida running a blue 14’ deck over. He has the exact same engine, same box and prop.
It’s a blue Hamant boat. You can find it on their Instagram page. His engine actually has a YouTube vid if you google Steve Morris airboat engine. His boat is lighter than mine and pitched for top end. He told me he gets 82-83mph.

Hope this helps
16x8 Utah style Diamondback. Steve Morris 427 LS3 w/3.6L Kenne Bell blower, Holley EFI, 2.55 OxBox swinging a 5 blade 82” JX

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OneBFC
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Re: 88" JW blades

Post by OneBFC »

My personal favorite.... :toothy7:
IMG-20200121-WA0002.jpg
-Russ
-----------------------------------
The only thing stopping you is FEAR
400+hp Ecotec, 12x7.6 DBDO, 80" 3B Maximus, 2.3 OX,85+mph, water = purely optional
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Prototype
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Re: 88" JW blades

Post by Prototype »

Pato Sicario wrote:
Sat Feb 01, 2020 9:46 pm
I run my boat in Utah, specifically for duck hunting.
On the dyno my engine came in at 1143 peak TQ at 4300 rpm. 1119 peak HP at 5900 rpm, 93 octane. I told the builder to focus on 5400 rpm as maximum, turning 5 JX blades and a 2.55 box at Darrin’s recommendation over at Sensenich.

My Alaska/Utah boat is prob around 4,000 lbs all in with couple of guys, gear and 50 gallons of gas. It runs dry very well. I have the blades pitched for push not speed at 20 degrees. Max speed is 60 mph at 5,000-5,100 rpm.

Keep in mind that’s at 4200 in elevation. Most things you read tell you that you lose 12-15% to that elevation. So I’ll use 13.5...using that loss my new numbers at 5,000rpm are 906HP and 957TQ.

Our hunting season has just ended. So I’ll finally get around to calling the engine builder and do a true tune at this elevation. It was tuned in Florida and set in Learn Mode so I could just turn it on and go.

There is a guy in Florida running a blue 14’ deck over. He has the exact same engine, same box and prop.
It’s a blue Hamant boat. You can find it on their Instagram page. His engine actually has a YouTube vid if you google Steve Morris airboat engine. His boat is lighter than mine and pitched for top end. He told me he gets 82-83mph.

Hope this helps
If it works, use it!
Yeah I'm not up on numbers over a small bridge crossing over 400 feet high! MSL
I do find builds to be different even at factory specs though! Motors/hulls/even rigging's, one will be better and one will be worse even robot computer built.

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kwanjangnihm
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Re: 88" JW blades

Post by kwanjangnihm »

Pato Sicario wrote:
Sat Feb 01, 2020 9:46 pm
His engine actually has a YouTube vid if you google Steve Morris airboat engine. His boat is lighter than mine and pitched for top end. He told me he gets 82-83mph. Hope this helps
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Deano
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Re: 88" JW blades

Post by Deano »

OneBFC wrote: My personal favorite.... :toothy7:
Image
Those are beyond any doubt, the cleanest rudders I have never seen.
Can't post here either, without commenting on how bad ass those dyno numbers are. :thumbleft:
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but it is not the path to knowledge; it has no place in the endeavor of science."
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Re: 88" JW blades

Post by FL Boats »

That is wicked looking. Great picture.

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Prototype
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Re: 88" JW blades

Post by Prototype »

Deano wrote:
Tue Feb 04, 2020 5:45 pm
OneBFC wrote: My personal favorite.... :toothy7:
Image
Those are beyond any doubt, the cleanest rudders I have never seen.
Can't post here either, without commenting on how bad ass those dyno numbers are. :thumbleft:
Its hard to post anything anymore that's real even a pic of something as useless as a rudder less airboat with no rudder mounts or steering options
Could be new but highly doubt any real steering to this pic with that setup of old school prop blades and mounts.
Not that it can't be done, but not in this pic of rudder less steering.
Hell maybe foot drag is the knew thing,, some can't steer even with old school rudders and mounts?
Could be a pic of boat that counts on ram powered drag to steer it?
Could be a pic that has no relation to the long jw blades in gear box format?
Hard to say what onebfc is thinking other than more and wider rule vs real time JW usage?
Looks often does not work even at 100K but does tend to sell?

ak375hh
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Re: 88" JW blades

Post by ak375hh »

Prototype wrote:
Mon Mar 09, 2020 10:48 pm
Deano wrote:
Tue Feb 04, 2020 5:45 pm
OneBFC wrote: My personal favorite.... :toothy7:
Image
Those are beyond any doubt, the cleanest rudders I have never seen.
Can't post here either, without commenting on how bad ass those dyno numbers are. :thumbleft:
Its hard to post anything anymore that's real even a pic of something as useless as a rudder less airboat with no rudder mounts or steering options
Could be new but highly doubt any real steering to this pic with that setup of old school prop blades and mounts.
Not that it can't be done, but not in this pic of rudder less steering.
Hell maybe foot drag is the knew thing,, some can't steer even with old school rudders and mounts?
Could be a pic of boat that counts on ram powered drag to steer it?
Could be a pic that has no relation to the long jw blades in gear box format?
Hard to say what onebfc is thinking other than more and wider rule vs real time JW usage?
Looks often does not work even at 100K but does tend to sell?


This is one of the most confusing posts I’ve seen...

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Prototype
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Re: 88" JW blades

Post by Prototype »

Welcome aboard?

People post shit that has never run or cannot run or is heavy or light or just plain stupid money with very little knowledge?

It's cool of attempts though!

SWAMPHUNTER45
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Re: 88" JW blades

Post by SWAMPHUNTER45 »

PATO have you gotten much time on the new boat yet? Maybe post a review or video to show her in action.

Pato Sicario
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Re: 88" JW blades

Post by Pato Sicario »

Been a while since I was on SA. Had the boat out a bunch.
Haven’t taken any video. I’ll get some for sure the next time I’m out. In the meantime, here is the test drive DB did back in December as well as a video of the finished boat in the shop right before it shipped.

16x8 Utah style Diamondback. Steve Morris 427 LS3 w/3.6L Kenne Bell blower, Holley EFI, 2.55 OxBox swinging a 5 blade 82” JX

SWAMPHUNTER45
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Re: 88" JW blades

Post by SWAMPHUNTER45 »

They are the JW not the JX interesting

Beautiful boat

I have zero experience in a cold weather configuration. It is interesting to see the rigging and dash configuration opposed to the traditional side or goose neck.

Congrats on your build

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