G'day,

Waiting for some photos from Blind Date. Will post them as soon as I
have them. The only other ones are in the photos section.

regards,

Rob

On Sat, May 31, 2008 at 9:43 PM, Gardner Pomper <gardner@...> wrote:
> Hi,
>
> I am not trying to get a better design. I am trying to find out more about
> the current one. I have never seen a drawing, and the few photos I have seen
> are too far away and under too much construction for me to tell much. For
> instance, I have never seen a drawing that looked like it had a large
> diameter wheel type thing going around the whole rudder. I would love to see
> more detail on any of the versions of Rob's rudder, but especially the one
> he is thinking about for the charter proa.
>
> - Gardner
>
> On Fri, May 30, 2008 at 9:28 PM, jjtctaylor <jtaylor412@...> wrote:
>>
>> Hi Gardner,
>>
>> That's essentially the plan as it is currently devised. The only
>> difference is there is no
>> pivot pin. Only two pins, one shears or the other, and the rudder pivots
>> on the surviving
>> pin. The pins themselves don't shear, only a retaining plate securing the
>> pins shear. Can
>> have a stack of plates and easy to reinstall.
>>
>> Your design could work too. You only have half the problem solved. What
>> happens to the
>> steering connection when the pin shears ? That's significantly more
>> complication. Rob's
>> design the rudder always falls away from the axis where your pivot pin is
>> located. That is
>> where the connection to steer is made, either rack and pinion for him or
>> spur gear and
>> worm drive for me.
>>
>> In your design the pivot pin would have to move forward to allow the
>> rudder swing to clear
>> the enagagement depth of the mating steering hardware.
>>
>> Doesn't mean it can't be done, just have to be sure your design is better
>> than something
>> else. So far none have offered significant advantages. If you have some
>> ideas on steering
>> connection, please add to your model. Not want to stifle creativity.
>>
>> JT
>>
>> --- In harryproa@..., "gardnerpomper" <gardner@...> wrote:
>> >
>> > Hi,
>> >
>> > There have been alot of rudder discussions here and I have not gotten
>> > them clear in my
>> head.
>> > I just posted to Files, under "Gardners layous" a rudder PDF file. It
>> > seems like this would
>> work
>> > for the lifting, tilt when grounding and 306 degree coverage. It is so
>> > simple, that I am
>> sure
>> > everyone can tell me why it doesn't work. Can someone use this as a
>> > basis to let me
>> know
>> > how the Harryproa rudders (specifically for the charter proa) differ?
>> >
>> > In case my drawing is less that clear, the idea is that there is a short
>> > section of rudder
>> case
>> > (allowing the rudder to lift vertically), enclosed in a nylon bearing
>> > (allowing 360 degree
>> > rotation) that acts like both a bearing and a quadrant. The outside
>> > (non-turning part) of
>> the
>> > bearing has a center rotational pin and 2 sacrificial pins that will
>> > break in the event of a
>> > grounding and allow the rudder to kick up.
>> >
>> > Thanks,
>> > - Gardner
>> >
>>
>
>