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SB 11-04-2022 10:11 AM


Originally Posted by 302Sport (Post 4850528)
Because a mystic doesn’t need 4 engines!!! My 50 Mystic with 1850hp turbines ran 210 when it had plenty of room to get there. Qatar ran 244 in kilo with twin T55’s, how fast do you want to go!??!?! Lol

Hold my Controller ! :) :wink lol :grinser010::lolhit:

https://cimg8.ibsrv.net/gimg/www.off...9244a8edd7.jpg

1MOSES1 11-04-2022 10:42 AM


Originally Posted by 302Sport (Post 4850528)
Because a mystic doesn’t need 4 engines!!! My 50 Mystic with 1850hp turbines ran 210 when it had plenty of room to get there. Qatar ran 244 in kilo with twin T55’s, how fast do you want to go!??!?! Lol

but does it have a flux capacitor!!!!


https://cimg0.ibsrv.net/gimg/www.off...514f6ffe9.jpeg

Interceptor 11-04-2022 11:06 AM


Originally Posted by 302Sport (Post 4850446)
Spruce Goose…

With something this old that never approached its expectations it is another Spruce Goose. Even if the program was restarted who's left from the original design teams that knows the hydro and aerodynamics of the hull and running surfaces that could contribute ? It's outdated technology like the Blackberry.

Brad Christy 11-04-2022 11:44 AM


Originally Posted by 1MOSES1 (Post 4850523)
Both props are competing for clean water…maybe a single prop is more efficient. So far dual prop boats have faired better than quad propeller.

Moses,

Not side-by-side, they're not. It they were actually staggered, maybe, where their blade radii actually intersected. But not as long as they have their own lane.

Thanks. Brad.
(937)545-8991

Brad Christy 11-04-2022 11:50 AM


Originally Posted by 302Sport (Post 4850528)
Because a mystic doesn’t need 4 engines!!! My 50 Mystic with 1850hp turbines ran 210 when it had plenty of room to get there. Qatar ran 244 in kilo with twin T55’s, how fast do you want to go!??!?! Lol

302,

Records are set to be broken, right?

When asked "how much is enough", J Rockafeller replied, "Just a few dollars more.

By your logic, a boat doesn't NEED turbines, at all. I mean.... How fast do you want to go?

Thanks. Brad.
(937)545-8991

Wildman_grafix 11-04-2022 11:50 AM


Originally Posted by Brad Christy (Post 4850538)
Moses,

Not side-by-side, they're not. It they were actually staggered, maybe, where their blade radii actually intersected. But not as long as they have their own lane.

Thanks. Brad.
(937)545-8991

More drives = more drag. It's why a lot of go fast went to dual motors rather then triples.

Before you talk about the multi engine outboards that is because they are in a way limited on the HP. The Mercury 600 OB are not intended for a fast light hull. The only go fast cat that somewhat recently used more than 2 was the DONZI thing.

Brad Christy 11-04-2022 11:56 AM


Originally Posted by Wildman_grafix (Post 4850540)
More drives = more drag. It's why a lot of go fast went to dual motors rather then triples.

Before you talk about the multi engine outboards that is because they are in a way limited on the HP. The Mercury 600 OB are not intended for a fast light hull. The only go fast cat that somewhat recently used more than 2 was the DONZI thing.

Wildman,

Surface drives don't induce much drag, if any, really.

Besides, even with standard drives, each prop overrides the drag induced by its own outdrive, right? There is a net gain for each. Yes, weight is a factor, but that's where turbines shine, right?

Thanks. Brad.
(937)545-8991

Brad Christy 11-04-2022 11:58 AM


Originally Posted by SB (Post 4850531)
Hold my Controller ! :) :wink lol :grinser010::lolhit:

https://cimg8.ibsrv.net/gimg/www.off...9244a8edd7.jpg

SB,

Nah. Most surface applications use a pistol grip transmitter. :angry-smiley-038:

I did (do?) use Spektrum, though.

Thanks. Brad.
(937)545-8991

hogie roll 11-04-2022 01:10 PM


Originally Posted by Brad Christy (Post 4850508)
Hogie,

I did a quick Google and read the history of the variants on the T55. There were a few that topped the 4K SHP mark (There's one in development that is expected to put out 6500 😮), but they are considerably bigger in either diameter, length or both, and I'd think the prospect of retrofitting them would prove challenging. The latest article I've been able to find indicates the standard 2900-3000 SHP was what was used.

Thanks Brad.
(937)545-8991

Nah man, not doing 250 with that power.

Wildman_grafix 11-04-2022 01:40 PM


Originally Posted by Brad Christy (Post 4850542)
Wildman,

Surface drives don't induce much drag, if any, really.

Besides, even with standard drives, each prop overrides the drag induced by its own outdrive, right? There is a net gain for each. Yes, weight is a factor, but that's where turbines shine, right?

Thanks. Brad.
(937)545-8991

It's still drag to overcome. That is why on fast V's the same total power a twin is faster than a trip.


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