[bolger] Re: More on small boats

Payson has a version for a motor. My foam wonder brick has a cutout and motor mount in the stern and the Honda 2 does about 5kts with my weight in bow and lots of wake.  The stern settles right down at about 1/3 throttle, so definetly flatten the run if you want to use a motor. I haven't sailed mine yet, which is a shame as I think I just have to make a tiller to fit on the rudder. I plan to use my do everything, melonseed rig(about 70 ft). Clyde Wisner

GHC wrote:

I don't know about reverse, but, for planing, the rocker aft should be less
than about 3% or 4% according to Dave Gerr (ref "Propeller Handbook" or
"Nature of Boats").  I think the Brick would have quite a bit more than
that, and, according to experience, does not want to plane. Not to say it
doesn't move along with a little kicker.

So, if you wanted to plane under power, you need to get the aft end pretty
flat and level, changing the boat quite a bit.  If you want to plane under
sail, well, that's another matter ;-}

Gregg Carlson

At 08:57 AM 3/29/2000 EST, you wrote:
>Bolger says in the Brick write-up, in BWAOM, that the rocker built in to the
>aft of Brick could be reduced. He seems to say its only justification is to
>be able to motor the boat in reverse. If you don't plan to motor in reverse,
>is it advisable to reduce the rocker?

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I don't know about reverse, but, for planing, the rocker aft should be less
than about 3% or 4% according to Dave Gerr (ref "Propeller Handbook" or
"Nature of Boats"). I think the Brick would have quite a bit more than
that, and, according to experience, does not want to plane. Not to say it
doesn't move along with a little kicker.

So, if you wanted to plane under power, you need to get the aft end pretty
flat and level, changing the boat quite a bit. If you want to plane under
sail, well, that's another matter ;-}

Gregg Carlson


At 08:57 AM 3/29/2000 EST, you wrote:

>Bolger says in the Brick write-up, in BWAOM, that the rocker built in to the
>aft of Brick could be reduced. He seems to say its only justification is to
>be able to motor the boat in reverse. If you don't plan to motor in reverse,
>is it advisable to reduce the rocker?

Bolgerexperts,

Bolger says in the Brick write-up, in BWAOM, that the rocker built in to the
aft of Brick could be reduced. He seems to say its only justification is to
be able to motor the boat in reverse. If you don't plan to motor in reverse,
is it advisable to reduce the rocker?


<< Bolgerbuilders,

Been thinking about really small boats like Brick and Nymph and Tortoise. I
have a few questions:

- What are the drawbacks to, say, an 8' sailboat other than passenger
carrying capacity?

- I think Greg says the Brick is really very functional or even performs
amazingly well, something like that. What does that mean?

- Some of these boats have the longwise thwart. Does that work for sailing as
well as rowing?

- Any ideas on best rig for a really small boat? Does Bolger have a two part
mast design that could be applied to these boats?

Mike Masten

>>