G'day,
If you split the hulls, split them in three, not two. Splitting the
bent area makes it a V rather than a round.
A rock will damage 2 layers of glass almost as easily as one. If you
dry it out, do so on planks, fenders or old tyres. Makes it easier to
work on the bottom as well.
regards,
Rob
On Fri, Apr 24, 2009 at 9:16 PM, Gardner Pomper <gardner@networknow.
>
>
> Hi Doug,
>
> So how much of the bows? Just the keel section, or all the way up? Is carbon
> appropriate, or should I use kevlar? From what I have heard, you can't sand
> kevlar, so maybe kevlar covered by a layer of fiberglass?
> I like sidecar, but it just kept growing on me and I couldn't stop until I
> ran up against the limits of fitting it into a container, so it ended up as
> a flat panel harry. For some reason, I keep thinking that I am going to be
> able to build it, all evidence to the contrarry. I have not ordered the
> materials yet, so this is the time for last minute pleas to my sanity
> <grin>.
> I have pretty much up to date diagrams in the Files section under "Gardners
> Layouts/Contrarry"
> The only thing I have changed since posting them is the panel layouts. I
> split the hulls so that I only need an 8' wide table.
>
>
> On Fri, Apr 24, 2009 at 9:04 AM, Doug Haines <doha720@yahoo.
>>
>>
>> hi gardner,
>>
>> my experience with sidecar which has lost its antifouling on the bottom
>> from scraping across sand too much, but the glass and undercoat are fine.
>> only the bows need heaps more than present, i noticed rob said 3 layers
>> recently for harriette, where i only put one layer on sidecar - hence lot of
>> easily damageablt points.
>> i woulod have said the broad flattish bottom would not need reinforcing,
>> just watch the antifouling, but the sharp bows, and also i have damaged
>> quite deeply into my rudder blades on the bottom front tip - so kevlar,
>> nylex ? and solid dense bog at the rudder tip.
>>
>> doug
>>
>> so decided how big a boat?
>> remembered interest in sidecar while ago.
>>
>> --- On Fri, 24/4/09, Gardner Pomper <gardner@networknow.
>>
>> From: Gardner Pomper <gardner@networknow.
>> Subject: [harryproa] Bottom construction for beaching?
>> To: harryproa@yahoogrou
>> Date: Friday, 24 April, 2009, 10:52 PM
>>
>> Hi,
>> I was wondering how to make the keel of a harry tough enough to be able to
>> beach it, for letting it dry out or working on it after the tide goes out. I
>> figure just sitting there isn't too much of a problem, so long as it isn't
>> an obsidian beach, but the boats always bounce a bit as the tide goes in and
>> out.
>> I was planning on 15mm Airex core, with 18oz biaxial fiberglass on either
>> side. Think I am ok with that, or should I add a 2nd layer of fiberglass? If
>> I just do it below the waterline, I am only talking about a strip 12" wide
>> or so (maybe 50 sq ft total), so the extra weight or expense isn't huge. I
>> could even get some 12oz carbon twill for about $7/sq ft.
>> Opinions?
>> - Gardner
>>
>>
>
>
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