[MHml] Re: Engine wells
multihulls at steamradio.com
Fri Apr 6 01:44:31 EST 2001
>I'm evaluating different ways to mount the two 9.9 yamaha engines <snip>
>I am inclined toward the most simple one, which is to glass in a well
>at the aft end of each stateroom, cut a hole in the center of the hull,
>large enough for the prop and shaft to extend through, <snip>
Glad you didn't choose the most difficult one! Wouldn't the simplest be to
mount both 9.9's side by side in place of the 40?
>We have several thoughts about closing the hole when the motor is up. We
>would box the whole thing in...be like a closet with a watertight hatch
>for access to the engine. Might need air scoops for ventilation and
I know it seems like a nice way to go, but there are so many negatives - I'd
seriously take Paul Nudds advice of some months back - buy new motors (and
hang then off the sled or spaced apart on the back beam), and change them
while they're still under warranty.
>This seems to put the engine where it can do the most good, and gives it
>the most protection.
Apart from the very inefficient box it's in as you move (you've got a square
edge directly above the prop under motor), keeping the water out while sailing
will be a problem - so add say 20 kilo's to the stern of each hull for water
you lug around in addition to the weight of the box, the top lid, and whatever
bottom sealing you use, on top of the motor.
>Anyone on the list have any experience with a setup like this, or any
>comments pro or con?
Seen several attempts in cat's from 33 to 50 feet, and afraid non have
overcome the issues - don't get me wrong - if you can make it work, go for it,
but I'll bet money the quickest, easiest, lightest, lowest drag solution won't
be motors in closets.
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