Flow-Torq II + 502/415 = ?
 

Hey guys,
Just got my new prop in today and it had a Flo-Torq II hub with a Bravo 1 (less than 400 HP) tag on it. Soooo with my 502/415 my first instinctive answer would be duhhhh but can anybody tell me if these hubs will take the torq this 502 delivers or should I go out and try to buy a solid hub assembly?
Wanna get out there and try it in the AM.
thanks :p

Re: Flow-Torq II + 502/415 = ?
 

It's kind of right on the edge, many of our customers stay with the plastic hub for the protection it provides and don't have a problem. I doubt if you will toast it first time out, but keep a spare.

Re: Flow-Torq II + 502/415 = ?
 

Thanks Mark, It was a suprize to me and the prop is a 29P Mirage Plus so I guess I will go out and see how fast the boat runs and keep the solid hub 25p Mirage Plus in the boat for a change if needed .. changing it in the water is better than trying to paddle that go fast boat back to dock :D

Re: Flow-Torq II + 502/415 = ?
 

The plastic is kind of scary. But I've run one for two seasons with my ZZ502. No problems yet....knock on fiberglass.

Re: Flow-Torq II + 502/415 = ?
 

You're going from a 25 to 29 pitch????????????

Re: Flow-Torq II + 502/415 = ?
 

I was wondering how long that would take :D
Yes. I have a plan to supercharge the boat and the prop was purchased based on the 600hp numbers I am wanting to make. However this combo now 23' Scarab SCS goes to rev-limiter so fast now that I am wondering if I can pull to WOT 4600-5000 with the 29P.
We have a nice day down here so going out today to find out. Also several poker runs and speed events. So wanting to to a baseline of 2500-3500-4500 rpm and see what the MPH on the gps is. Also to see if a 3500 rpm cruise rpm can yield any significant mph increase at reasonable throttle position. Just learning ...one step at a time...

Re: Flow-Torq II + 502/415 = ?
 

Ive been running a Flo-Torque II plastic hub for three seasons on my current boat with a 502 Mag MPI 415hp.

Before that I ran the same plastic hub behind a ZZ502 in a 22 Scarab.

Never had a problem.

Ron

Re: Flow-Torq II + 502/415 = ?
 

I thought the metal insert came with anything over 26P. That's what the place where I bought my prop said.

I did use a plastic insert on my old prop with 385 HP running hard without any problems.

Re: Flow-Torq II + 502/415 = ?
 

Thanks for the info must be stronger than it looks.

Re: Flow-Torq II + 502/415 = ?
 

BTW, I ran the plastic hub on a 420+/- hp engine with no prblems.

Re: Flow-Torq II + 502/415 = ?
 

Well as predicted by others 5 MPH slower with the Mirage Plus 29P than with the 25P. Guess I found the limit that the 502/415 can swing. Back to the drawing board. :rolleyes:
Anyone want to buy a Mirage Plus 29P :D

Re: Flow-Torq II + 502/415 = ?
 

Well more stuff...
Went out today with my new Mirage Plus 29P and found the limit to the HP of the 502. Never made it to 4600 and slowed down. So much for that well had fun experimenting
Can hit the rev limiter in a hurry with the 25P so I guess a 26 or 27 is in order. Anybody have good luck with 4 blade props?
Needless to say I have a 29P for sale
Here is a link to some fun we had today after the testing. If you live up north where the lakes are still frozen this may warm you up !
http://www.isphub.net/wayne/day-in-boat.wmv

Re: Flow-Torq II + 502/415 = ?
 

Wellllllllll 29P too big. But only slightly boat pulled to 4500. Go figure. :rolleyes: Well selling that one. :(
Was told to try a 4 blade. Any ideas guys?

Re: Flow-Torq II + 502/415 = ?
 

Is your 25 a Mirage plus or the older style?

Re: Flow-Torq II + 502/415 = ?
 

Mirage Plus. Both 25 and 29
Mark what do you think 4 blade ? Smaller pitch 3 ?

Re: Flow-Torq II + 502/415 = ?
 

Give me the speed/rpm for both, and what gear ratio are you running?

Re: Flow-Torq II + 502/415 = ?
 

I assume 1.36 97 502/415/bravo dont know how to tell for sure.
The boat pulls to Rev limit (5000 ) very fast with 25. That is why I figured it would pull such a big jump 29. Rookie :-)
3500=48ish 25p
5000=75

79 was a flop 4400 max at 72ish

Re: Flow-Torq II + 502/415 = ?
 

Get me the serial number of the drive, but the numbers do indicate you most likely have a 1.36. You would pick up a couple of MPH if you change to a 1.5 ratio and then re-prop. Probably a 28" Bravo 1, but you might have to cut the diameter/blade area some. Also your 29 Mirage might work. I bet you had the 29 over-trimmed to get the RPM. BTW, how are you determining your best trim setting? You might want to take a look at this.

http://go-fast.com/prop_slip.htm

Re: Flow-Torq II + 502/415 = ?
 

Yea I did trim up until big slip trying to get it up there.
Bravo 1 as good as some of the big dollar 4 blade props ?
withouth changing gear what would be a logical step to the 4 blade 26? I just placed my 29P up for sale but still own it so far
Wayne

Re: Flow-Torq II + 502/415 = ?
 

Serial Number 0K110367