What Engine????

[Haines Boy]

Rod Fishing i purchased a used opti 150 for $11200 from Wondal Rd Marine in Bris. That included smartcraft guages. Fitting was $1000 and you couldn't hope to deal with better blokes. Sure it had 820 Hrs on it [now 1020Hrs] but as a rec user I'll never wear it out. The $$$ saved means I can enjoy current technology. Could be hype but have since heard Head wear on these motors at 1000Hrs is negligible. Another point OBM manufacterers can label the horses within !0%. That leaves big discrepencies between similar rated motors.
I know Wondal Rd sell a new opti every year to a few of their commercial guys. Hence barely a year old with those hours.
Food for thought anyhow.

[Haines Boy]

Hey Gary Almost wet myself at the sight of ripples pod. Any chance of PM ing me with the builders info.
Many thanks,
HB

[Jabba_]

You have failed to address your comment regarding props, which is what i was interested in. And it has nothing to do with brand loyalty. Its more about technology. Wonder why all the MotoGP bikes went to four stroke? Something to do with an enormous power advantage i think... I honestly have nothing against DI 2 Strokes apart from the ridiculous marketing, i just happen to think that 4 Strokes are a vastly superior engine..

The reason your 4st is able to swing a bigger prop is because the gear ratio in the 4st is shorter than a 2st gear ratio.


175hp
Yamaha 4st,,, 2.0/1
Yamaha 2st,,, 1.86/1
Suzuki 4st,,,,,, 2.5/1
E-tec 2st,,,,,,,,1.85/1

Out off the above outboards, the suzuki would be able to turn the biggest prop due to it low ratio, but the Yammie and E-tec 2st with a smaller a smaller pitch will still be quicker and faster across the entire rev range due to the taller gear ratio...

Generaly, it take an extra 1000rpm for a 4st to match the 2st speed at cruise and WOT....

[Jabba_]

Hi Ripples, I'm powered by a 200hp 4 Stroke Suzuki. Not sure weather you thought it was me that wanted to re-power or not. But its actually Rod fishing that was thinking about it..

Did you have the pod fitted yourself, or was it on the boat when you bought it? How do you find it handles? I'm thinking of podding mine at some stage and am curious to know how yours worked out.. Are you able to post a few Pics of it?

Thanks

Shane

Bingo... There's your answer to your question. Your running a Suzuki with a gear ratio of 2.5 to 1... So for ever 2.5 revolutions off the drive shaft your prop will turn 1 revolution... If you were to reduce your ratio to 2.0 1, there is no chance your motor would be able to swing your prop to the revs your getting now... Let a loan if you went to a general 2st ratio off 1.85/1.... Generaly speaking