Turbo 1 prop didn't work on my boat
 

Okay, after hours of searching forums and picking brains I was sure that a Turbo 1 prop would be perfect for my boat. Well, it isn't.

I was looking for something that has good bow lift which I was told the Turbo 1 has. But, it FEELS like the Turbo 1 lifts the whole boat, including the stern, out of the water. When trimmed out you can feel the boat lift and it starts chine walking really bad. Based on feel I think I need a prop that will plant the stern better and lift the bow more. The stock prop was a Viper and it rode flat with just a touch of chine walk. With the Turbo it is much worse.


Kinda bummed cause I layed the money out for a brand new prop thinking it was the one I needed. Is it worth sending in to get re-worked? How much can the characteristics of a prop can be changed? Or should I just continue trying different props til I find a better one?

Thanks

Re: Turbo 1 prop didn't work on my boat
 

give us some info about the boat... :D

Re: Turbo 1 prop didn't work on my boat
 

I'd say the Merc. Mirage Plus would be worth a try... but we need more boat info...

What boat?
Length?
Power?
Drive and ratio?
etc......

Re: Turbo 1 prop didn't work on my boat
 

With a little information I am sure we can help
Waterfouls questions are a great place to start with the addition of prop pitch.

Julie

Re: Turbo 1 prop didn't work on my boat
 

Boat is a small deep V, a Four Winns Unlimited 191.

LOA 19' 2", Beam 7', Deadrise 24*, Dry weight appr 2800lbs, PSHP 320, Gear ratio 1.51, Prop 14.25 x 25 Turbo 1

These boats are known too chine walk a little, and it did very slightly with the stock Viper. But with the Turbo 1 it was out of control. At first I thought I was over-trimming because the prop was too big, but the gauge and my "roost/wake" did not indicate that. I am going to try the stock Viper prop today back to back with the Turbo.

Like I said to me it feels like the Turbo 1 is lifting the stern too much and causing the boat to walk.

FY!: I put a 3rd person in the boat who sat in the back seat. He weighs about 220 and with him in there the boat was moe stable.

Re: Turbo 1 prop didn't work on my boat
 

Those hulls have alway favored the Mirage propellers.

Is the 25P allowing the engine to run in the proper range?

Re: Turbo 1 prop didn't work on my boat
 

Brett, too be honest I am not sure. It definitely seemed like it but after just a few seconds at 4800-5000 she'd start dancing so I'm not 100% sure.

I'm going out tonight after work and I'm going to test the stock prop and the Turbo 1 back to back. I am going to do wide-open runs keeping track of the rpms, speed and trim angle from 4000-5000 rpm.

I was leaning toward the Mirage Plus but a few people told me the Turbo 1 would give me the same performance and a more stable ride.

Re: Turbo 1 prop didn't work on my boat
 

We'll wait to hear back.

Re: Turbo 1 prop didn't work on my boat
 

Looks like I'm gonna get rained out! :(

Re: Turbo 1 prop didn't work on my boat
 

Did some testing today. Here's the numbers. Should be pretty close, the water was kinda snotty. 2 1/2' washing machine chop. Fun as hell but hard to read gauges! :D

These are WFO runs trimming up to the desired rpm.

Viper
4400 - 58mph
4600 - 60mph
4800 - 62mph
5000 - 65mph
5100-5200 - 68mph

Turbo 1
4200 - 59mph
4400 - 62mph
4700-4800 - 66

My boat is much more stable with the stock Viper. But, I definitely have to trim the Turbo a lot more which could be why the boat doesn't handle as well.

I am trimmed out more at 47-4800 rpm on the Turbo run than when I am running 51-5200 rpm on the Viper run. I am thinking the 25 is too big requiring too much trim. I'm thinking a 23 or 24 Turbo 1 MIGHT work. But. will I get any more speed out of it? For not being a "performance" prop I'd say the Viper does pretty well. If they made a 25 Viper I'd be all over it!

Here's a question that puzzles me. How can a 23 Viper and 23 Turbo turn the same rpm when the Turbo has significantly more blade area?