Boatmad Winter Project. - Page 2

Jon · 27-10-2004, 01:33 PM

Has anyone used a Boxer engine in a boat?

Jon · 27-10-2004, 01:35 PM

How about an inverted hydraspa pad on the rear of the hull pumping air instead of water. bit like an upside down air hockey table.

Jon · 27-10-2004, 01:40 PM

to reduce surface drag

Jon · 27-10-2004, 01:51 PM

OK,

If you have a surface such as the hull planing over the surface of water, friction will increase along with speed.

So what designers have been trying to do for years is to unstick the hull and thus reduce friction, hence the stepped hull. However this caused a lot of headaches as the moulding process becomes more difficult with stepped hulls.

So if you take a conventional Deep V hull and pump air out through the hull and onto the waters surface you will disturb the water stiction and release the grip the water has on the hull by a significant amount and thus unsticking the hull from the friction and enabling higher cruise and top speeds for a lesser amount of fuel.

Comprende?

Jon · 27-10-2004, 01:53 PM

Alternatively,

You could alter the characteristics of the rear of the boat to be like a hovercraft.

Ben · 27-10-2004, 02:00 PM

Quote:

Originally posted by R-Don
Has anyone used a Boxer engine in a boat?

Eduardo Polli ran a Class I boat in the early 90s with four Subaru boxer engines. If memory serves, they were each 12 cylinders and turbocharged.

I don't believe he ever finished a race.

Jon · 27-10-2004, 02:18 PM

right,

So why didnt he ever finish a race with that set up?

Engines? Drives?

Jon Fuller · 27-10-2004, 02:33 PM

Quote:

Originally posted by R-Don
Has anyone used a Boxer engine in a boat?

Edwardo Poli had four subaru flat summit or other turbos in his class one cat SDA which usually ran very quick for half a lap or so.

EDIT: sorry ned, just saw your post, didn't mean to repeat

Admiral P. Brain · 27-10-2004, 02:58 PM

has to have a bullet proof drive.... so no bravo style drive systems

Jon Fuller · 27-10-2004, 03:05 PM

I wanna move the goalposts!

Jon Fuller · 27-10-2004, 03:15 PM

The Konrad (spelt it wrong last time)

http://www.konradmarine.com/540_1.html

This is not really a 'Bravo style' drive, but is as close to a domestic drive as you can get without stepping into the race bred stuff.

Ben · 27-10-2004, 03:37 PM

Quote:

Originally posted by R-Don
right,

So why didnt he ever finish a race with that set up?

Engines? Drives?

Engines, drives and gearboxes etc. The whole thing was far too complicated and one piece or another always let go.

Jon Fuller · 27-10-2004, 03:58 PM

Quote:

Originally posted by Captain Chaos
JF...nice avatar

they look surprisingly good in weenie!

I reckon that considering they were taken on a pocket camera (by a nob) they look pretty good 'big'!

Jon · 27-10-2004, 04:01 PM

Flamin heck,

Switch to runnin smokeless coal will ya you tight wad.

Jon Fuller · 27-10-2004, 04:03 PM

Jon · 27-10-2004, 04:07 PM

Jon Fuller · 27-10-2004, 04:10 PM

Don't tell greenpeace

I'm not in your league when it comes to budget for 'fuel costs', so I gotta stick with the stinkboat motors

Jon · 27-10-2004, 04:22 PM

Its not a matter of fuel costs,

More the fact that you come down to my Manor and pollute the Fkin air.

Jon · 27-10-2004, 04:24 PM

I rekon you were in front of my Gaff when that picture was taken.

I shoulda been on duty wiv me clip board takin down notes an at.

Ill get them bloody stinkpots band in the solent before long you see if i dont.

Captain Chaos · 27-10-2004, 04:41 PM

Try being in its wake when those big bazturds are cranked up!