Did I read about this on here already?

[6ballsisall]

Hasn't this been posted here? i can't remember

http://www.wakeworld.com/MB/Discus/messages/3183/242669.html?1122428323

[erkoehler]

I haven't seen it..... :confused:

[Mag_Red]

You're correct Jeff. It's been a few months ago...maybe three.

[milkmania]

Hasn't this been posted here? i can't remember

http://www.wakeworld.com/MB/Discus/messages/3183/242669.html?1122428323


time flies
http://www.tmcowners.com/teamtalk/showthread.php?t=1627&highlight=penta

[erkoehler]

Must have been on a snowmobile trip or something during that thread! :D

[Leroy]

I hold to my prediction on that thread, I expect to see a 190 with the engine/shaft/prop turned around 180 degrees and pulling from the front.

[6ballsisall]

Leroy, that sure would be interesting to see! Sounds like something we will see in Popular Mechanics!

[André]

I talked with the Volvo Penta rep at the boat show.No way IPS could be apply on a skiboat in its actual design.Way too big and heavy.

[RobertT]

I dont know much, but it makes sense to me that rather the prop being turned by a shaft in front or in back of the propeller will not make a huge difference. A prop would bend itself into oblivion if the forces on it were not equal. In other words, a props blade has a low pressure side and a high pressure side. It is both pulling and pushing equally. Therefore, the only advantage I can see with this system is that the water is not being obstructed by anything. The water rushing around the shaft of your boat going 40mph has to affect the prop in a negative way.

I think the biggest issue is that the prop is perpendicular to the direction of the boat...not facing down. On the other hand, maybe our boats need that force to keep the bow planted nicely. It is likely you would need trim tabs if the prop was at a 90 degree angle to the bottom line of the boat.

Of course, this is all speculation...I have no data to back any of this up...it just makes sense to me.

Give me a multi speed tranny way before putting an I/O outdrive under my inboard. Or variable pitch prop (would do the same thing, and you could drive in reverse without the need of a reversing transmission).

[ski36short]

I hold to my prediction on that thread, I expect to see a 190 with the engine/shaft/prop turned around 180 degrees and pulling from the front.

Someone correct me if I'm wrong but I'm pretty sure Infinity did that.

[AirJunky]

Someone correct me if I'm wrong but I'm pretty sure Infinity did that.
I think Infinity was just a V-drive setup moved forward so the prop was more under the middle of the hull. So no I/O hardware at all, but a more conventional v-drive transmission.

[shepherd]

Some possible disadvantages I see with this system.
1. It seems to be a lot bigger than the standard shaft/strut/prop running gear on our boats which means more weight and more water drag, both of which will slow your boat down.
2. Those props sure look exposed -- at least with a regular I/O, there's maybe a 50-50 chance that if you hit a log it will bounce off the front of the lower unit and not ding your prop too bad. You hit a log with one of these and your prop will be seriously mangled.
3. Looks like it has deeper draft over regular I/B or I/O.
4. Another disadvantage from I/O -- you can trim an I/O for shallow water or to level off your boat.