New "history of" thread... Surface Drives (Someone dust off T2x and trot him out!)
02-08-2004, 03:57 PM
#12
Platinum Member
Platinum Member
Careful guys...
Oars and paddles are surface drives. That means you need to add Ogg the Caveman to your mfr list.
and
Paddlewheels are definitely surface drives.
so
Fulton makes the list, too.
Any early 3-point hydro makes a good case for a surfacing application.
Outboard race boats running extremely high X's are surfacing propulsion.
Back when I dragged outboards, there was a triple engined Evinrude monster cat with the skegs cut off the motors, extra short midsections, and the steering locked on center - used a single knife edged rudder to steer. Definitely a surfacing application.
I suppose we are limiting the discussion to stuff that looks like a prop hung waay out back on a shaft ??
If so, we still have to include those Chinese rice paddy boats with the 10 foot propshaft on a tiller...
What are the rules, guys ??
Oars and paddles are surface drives. That means you need to add Ogg the Caveman to your mfr list.
and
Paddlewheels are definitely surface drives.
so
Fulton makes the list, too.
Any early 3-point hydro makes a good case for a surfacing application.
Outboard race boats running extremely high X's are surfacing propulsion.
Back when I dragged outboards, there was a triple engined Evinrude monster cat with the skegs cut off the motors, extra short midsections, and the steering locked on center - used a single knife edged rudder to steer. Definitely a surfacing application.
I suppose we are limiting the discussion to stuff that looks like a prop hung waay out back on a shaft ??
If so, we still have to include those Chinese rice paddy boats with the 10 foot propshaft on a tiller...
What are the rules, guys ??
02-08-2004, 04:05 PM
#13
Registered
Thread Starter
Originally posted by mcollinstn
What are the rules, guys ??
What are the rules, guys ??
02-08-2004, 05:41 PM
#15
Registered
Thread Starter
Originally posted by cuda
Ok, how about we limit the discussion to engines that would normally be mated to a conventional outdrive.
Ok, how about we limit the discussion to engines that would normally be mated to a conventional outdrive.
Anyone... Anyone... Bueller... Bueller...
02-08-2004, 05:58 PM
#17
Charter Member #927
Charter Member
Why are surface drives more eficient? What makes them so? I understand that the prop is partialy running out of the water. Why doesn't that simply make it cavitate? Is it because of no gearcase in the water ahead of the prop? When I talked to a builder of a custom offshore wave crushing V hull, he said he didn't think a surface drive would carry the bow enough to make the boat run right. Why would that be?
02-08-2004, 06:03 PM
#18
Registered
Surface this
Someone Call Caveman?
Got Eggbeaters?
Got Eggbeaters?
02-08-2004, 06:10 PM
#20
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Originally posted by Payton
Why are surface drives more eficient? What makes them so? I understand that the prop is partialy running out of the water. Why doesn't that simply make it cavitate? Is it because of no gearcase in the water ahead of the prop? When I talked to a builder of a custom offshore wave crushing V hull, he said he didn't think a surface drive would carry the bow enough to make the boat run right. Why would that be?
Why are surface drives more eficient? What makes them so? I understand that the prop is partialy running out of the water. Why doesn't that simply make it cavitate? Is it because of no gearcase in the water ahead of the prop? When I talked to a builder of a custom offshore wave crushing V hull, he said he didn't think a surface drive would carry the bow enough to make the boat run right. Why would that be?
