150 Optimax Prop

Downhilldai · 03 January 2007, 12:43

I'd be interested to hear what pitch propeller people are using on the 150 Optimax fitted to RIBs around 5.5 - 6.0 m.
I've seen a few threads on here which suggest the 19" LaserII and others in favour of the 21" version.
If anyone has experience of both, it would be great to hear how they compare.
Also, if any other varieties are used, eg Vengeance, Solas, etc., what sort of performance do you get from these as a comparison with the Laser II?

LURCHER · 03 January 2007, 16:08

19'' Laser 11 fantastic no cavitation at all though it just short of max revs at WOT

ribit · 03 January 2007, 16:27

I found a 23p 5 blade so much better than the 3 blade, in my particular case

Nick Hearne · 04 January 2007, 10:41

I ran a 19" laser II on a Viper 5.75 with a 150 opti, very good match!
But I think it was the Vengeance that Julie at steel developments advised as it would give more lift to the stern, if I remember right!

nugent · 04 January 2007, 16:21

my 6.5 vipermax 150 opti ran better on 21 pitch,Laser2
tryed 19 reved to much for my liking, sounded good tho

, with out good load on boat, where as 21P 4 up £200.00 fuel
43 notts if i remember correctly. phil chitty can confirm if i am wrong,

Rogue Wave · 07 January 2007, 20:03

I did 100's of hours on 6,5 Scorpion with a 150 happymnax usually with 6 up and the 19 laser 11 worked just great! I ran the 21 for a while but didn't notice enough fuel saving to say goodbye to the 19's holeshot.

Your boat will be stunning with a 19 which I think comes as standard

Mollers · 07 January 2007, 20:31

Laser 2 is an outdrive prop. The Vengeance is a large capacity O/B prop. Dai has no mates so he could probably get away with a 23P Vengeance which could get him near the 50knt mark.

Downhilldai · 07 January 2007, 22:59

Quote:

Originally Posted by Mollers

Laser 2 is an outdrive prop. The Vengeance is a large capacity O/B prop. Dai has no mates so he could probably get away with a 23P Vengeance which could get him near the 50knt mark.

I may have no mates, but I'm the weight of 3 blokes, so I'll go for either the 19" or 21".

Mollers: what pitch was that old Vengeance prop lying around in your shed? How did that one perform on your boat?

Mollers · 08 January 2007, 08:07

Quote:

Originally Posted by Downhilldai

I may have no mates, but I'm the weight of 3 blokes, so I'll go for either the 19" or 21".

Mollers: what pitch was that old Vengeance prop lying around in your shed? How did that one perform on your boat?

It's a 19". need to re-hub it though. I stripped the hub on the Laser 2 and swapped them. You're welcome to try it and the 21" Laser2. The Vengeance is gonna go back on for the Channel Isles trip.

IBWET · 09 January 2007, 13:49

Quote:

Originally Posted by Mollers

It's a 19". need to re-hub it though. I stripped the hub on the Laser 2 and swapped them. You're welcome to try it and the 21" Laser2. The Vengeance is gonna go back on for the Channel Isles trip.

Wish I was a bit nearer you lot that sounds the business.

robbie lee · 14 January 2007, 19:48

Hi I have a Avon 6.2 with a 150 Optimax 2005 model. I'm running 3 blader lazer line 21. I'm getting 5800rpm and top speed 62.8 (GPS Speed). I've had marine nortica in Poole set this boat up for the best speed and tried many props. This was the best of them. Let me know how you get on. Rob

Downhilldai · 14 January 2007, 20:56

Quote:

Originally Posted by robbie lee

Hi I have a Avon 6.2 with a 150 Optimax 2005 model. I'm running 3 blader lazer line 21. I'm getting 5800rpm and top speed 62.8 (GPS Speed). I've had marine nortica in Poole set this boat up for the best speed and tried many props. This was the best of them. Let me know how you get on. Rob

Robbie,
What make is the lazer line prop?
62.8 what?
Do you have any pics of the transom? How high is the cav plate above the keel?
Is there a big compromise on acceleration to achieve max speed with your current set-up?

Rogue Wave · 26 January 2007, 21:57

Quote:

Originally Posted by Mollers

Laser 2 is an outdrive prop. .

That's not what Mercury say on the box ! It says it's both

When I bought my new Opti about 18 months ago it came with controls , smart gauges, throttle and Prop in the package. Is this still the case or do you have to buy the props seperately

Downhilldai · 26 January 2007, 22:03

My Optimax toybox arrived yesterday with a Laser II 19" pitch prop

All part of the package, as were the control box and Smartcraft gauges

Rogue Wave · 28 January 2007, 19:45

it's a seminal moment, your first happymax 150!

Matt · 28 January 2007, 22:39

Laser II are a good all rounder for fairly lightly loaded boats compromising well between top speed and handling. Their major vice is they don't like surfacing, so you can't run mega transom heights.