Turbo props

[realmasa]

My turbo props have arrived, so now I'm waiting for a nice calm day. Anyway, I have pictures of them on a web page if anyone would like to see the differences between them, i.e. between Turbo1 141/4x21 and Lightning 143/4x21.

The Lightning's blades are more narrow and longer, how does this affect its characteristics compared to Turbo1's more rounded blades?

Here's the page, it's 1MB so it may take a while to load;
http://home.aland.net/masa/

/Mattias

 

[walleyehed]

Re: Turbo props

I should probably let Dhadley handle this, but I'll take a shot...
The Turbo1 is a great prop designed for over-all lift abilities with the balance of lift leaning torward the bow.
The Straight Lightning is a design intended to run in surfacing conditions where a large amount of bow-lift is desired. The trailing edges of the prop indicate extreme cup for great biting (holding) ability when run at high X-demensions and high trim angles.
Both props are progressive pitch but the Lightning has more parabolic rake (spoon effect) which is also seen in how far the blades are off-set in degrees, to the aft, vs. perpendicular to the hub.
I know.....clear as mud, right?
Hope that helps some.

 

[Ron G]

Re: Turbo props

So whats the turbo2 for?i know it has alot of stern lift compared to the txp.i guess i may have answered my own question.

 

[Tail_Gunner]

Re: Turbo props

IF the Stilletto 3 blade i had, has the same character that would play out why it took less trimming to cut the chop than the 4 blades did.........umm that is running in rough water the 3 blade took less trim to find top speed and required less trim to get the bow down to cut the chop.

 

[realmasa]

Re: Turbo props

Hi guys,

which is also seen in how far the blades are off-set in degrees, to the aft, vs. perpendicular to the hub.
I know.....clear as mud, right?
Hope that helps some.

Kenny, I have deciphered your post except the above, I'm not sure about what you mean with "to the aft, vs. perpendicular to the hub."

So whats the turbo2 for?i know it has alot of stern lift compared to the txp.i guess i may have answered my own question.

I think the Turbo 2 is the four blade version.

A comparison between TXP and Lightning, the TXP has a longer hub for some reason and also seems to have more blade area.
A picture: http://home.aland.net/masa/txplightning.jpg

/Mattias

 

[walleyehed]

Re: Turbo props

first, the Turbo2 was a design that (according to Steve at Precision)was built to give a tad more RPM without loosing speed...it is also a 3-bld.

If you set the 2 props on a flat surface, side-by-side(like in your pics), you can measure from the flat surface to the tip of the blade...the Lightning will have a greater mesurement-not because of diameter, but the Rake of the blade....

 

[realmasa]

Re: Turbo props

Ok, but how can you see on the trailing edge if the prop has either stern or bow lift or both?

It's gonna be a whole new experience driving a boat at 50knots in minus celsius.

Thanks,
Mattias

 

[Ron G]

Re: Turbo props

I'll be out there too RM.hope you have some good runs.
Kenny my T2 ran some good numbers but nothinh like the TXP,if i take the T2 and get some cup in it.do you think they can put enough in it to get me some bow lift.i may use it for a spare for river and shallow water fishing because it has a good hole shot.

 

[Dhadley]

Re: Turbo props

If you send the T2 to someone and want bow lift don't tell them to add cup. "Adding cup" means several things -- more angle, more length, more tip cup, more hub cup etc. Some of those things, or a combination, may help bow lift, some may not. You're better off to explain what the prop does that you like (holeshot) and ask for what you'd like to see more of (bow lift). Tell them if you'd like more or less rpm etc. Tell them what boat you have. Tell them what the TXP does that you like but realize that the T2 won't be a TXP.

RM has some real good comparison pics. Like Kenny said -- look at the difference in rake, the blade area, the overall shape and even the blade at the hub.

I'm sure Turbo or any good prop shop (Mazco, Mark Croxton etc) can blueprint the T2 . The more info you give them the better but just don't tell them to "add cup" and hope it'll produce more bow lift. There are some things that can only be changed by jacking up the prop nut and sliding another style prop on.

 

[Texasmark]

Re: Turbo props

Hey real (bystander's observation): "A comparison between TXP and Lightning, the TXP has a longer hub for some reason and also seems to have more blade area."

I noticed that the TXP has no exhaust flare as does the Lightening. I'm told that the flare is to assist in preventing exhaust gasses from getting to the blades and causing cavitation.

Possibly the TXP was deliberately designed without the flare (for some reason) but it's absence was compensated for by a little longer barrel.
:%

Mark

 

[Texasmark]

Re: Turbo props

Hey real,

I have an (essentially) open bass boat and I use a clear face shield when it's cold and I want to play....the kind you would use if you were in an OSHA regulated workplace and you were using a grinder.

Works great and shields the whole front of you if you couple it with a good hooded jacket with a drawsring to tie it around your chin.

Got mine from Harbor Freight, real nice and priced right.

Mark

 

[realmasa]

Re: Turbo props

Prop tests postponed to next season due to illness
I'm keeping both props.

/Mattias

 

[Gammabusa]

Re: Turbo props

Prop tests postponed to next season due to illness
I'm keeping both props.

/Mattias

Mattias,

hope you are allright, did yoy find out anything here?

Ronny

 

[Dhadley]

Re: Turbo props

Just some theory about the hub length -- the longer, straighter barrel should help top end. The shorter, flared barrel is supposed to help hole shot. In theory. How will it work on any given (your) hull? Ah.....testing! Gotta love it!