Search found 19 matches

by Geoff Harman
Tue Mar 18, 2008 11:29 am
Forum: Latest Developments
Topic: DC ballot
Replies: 99
Views: 75592

A DC in ply with carbon reinforcement can be put on the water for about $6500.00 AUD including beach trolley. They can be home built very easily with or without a male mould. It seems that ply is considered unsexy but it is an excellent material for one offs and is easy to work for the amateur boat ...
by Geoff Harman
Sat Jan 12, 2008 10:36 am
Forum: Latest Developments
Topic: IC (DC) Reviews
Replies: 22
Views: 29554

After a 5000km round trip we finally arrived back in Brisbane today. Firstly' thanks to Christian and Nicolle for there tremendous efforts in arranging the worlds. It was great meeting like minded people prepared to get in and design and build their own boats. My boat was well off the pace - about 5...
by Geoff Harman
Mon Dec 24, 2007 11:51 am
Forum: IC Marketplace
Topic: Boats for sail after the Worlds
Replies: 5
Views: 9440

AUS 25 will be for sale after the worlds Price $15000.00 including trailer and beach trolley.
Construction carbon fibre and kevlar over gaboon ply. Carbon fibre mast and boom.Tape drive main.
by Geoff Harman
Mon Dec 17, 2007 12:54 pm
Forum: World Championships
Topic: Personal Buoyancy at the Worlds
Replies: 7
Views: 11363

Whitworths " a leading Australian marine supermarket " have an outlet at 556 Elizabeth St Melbourne. On the way from the Airport if you dont mind going close to the city centre. Prices start at $39.50 for PDF 2's. http://www.whitworths.com.au If going through the city watch out for trams and in the ...
by Geoff Harman
Tue Aug 14, 2007 9:51 am
Forum: Australian and New Zealand Forum
Topic: Roll Call: Whats happening around the Clubs?
Replies: 53
Views: 71344

Humpybong Yacht Club will be holding an Open and Promotion Day on 1/9/07.
I will be there with both AUS 12 and AUS 25 if anyone wants to have a trial sail.
Refer to HYC.NET.AU for location and further details.
Geoff Harman
by Geoff Harman
Sun May 06, 2007 10:56 am
Forum: Australian and New Zealand Forum
Topic: AUS 25 gets wet
Replies: 6
Views: 13169

I have enough trouble staying upright on dry land (I don't go into the china and glassware section when shopping) so I have always tacked under the boom. I think there is insufficient volume in the stern to allow for stand up tacking. Looking at some recent photos which I hope to post soon I notice ...
by Geoff Harman
Mon Apr 30, 2007 4:13 am
Forum: Australian and New Zealand Forum
Topic: AUS 25 gets wet
Replies: 6
Views: 13169

Finally launched ICDC3 AUS 25 "Rat" http://i108.photobucket.com/albums/n5/harman_album/2007_0429ICDC3c0054-1.jpg http://i108.photobucket.com/albums/n5/harman_album/2007_0429ICDC3c0052.jpg Only a short sail but tracked well and felt good. Definitely less stable than the Nethercott. http://i108.photob...
by Geoff Harman
Sun Feb 04, 2007 11:41 am
Forum: How to......
Topic: tubular carriage slides
Replies: 11
Views: 12634

Phil Assuming you weigh 80kg and the fibreglass sliding tube is 400mm long the deflection is 3-4mm but more importantly the stress at the ends of the 50 dia tube is 87MPa. The yield strength of 6063 T5 is 145MPa which does not leave a very big safety factor for falling off waves etc. Like Steve says...
by Geoff Harman
Fri Dec 29, 2006 10:24 am
Forum: Australian and New Zealand Forum
Topic: Beginnings With An IC
Replies: 13
Views: 15757

G'Day Barry Tim asked me to reply to your email as he is about to start a 4000km round trip from Brisbane to Melbourne to pick up is new AC from Tim Wilson. The contact for NZ carbon fibre masts is below. The company is run by Alex Vallings current holder of the 12 ft skiff Interdominion Championshi...
by Geoff Harman
Sun Dec 24, 2006 10:51 am
Forum: Latest Developments
Topic: Weight.
Replies: 20
Views: 25018

ICDC with the hull virtually complete is on target for an all up displcement including crew of 130kg. This is despite not including the foam required for 75 kgs of postive buoyancy in the spread sheet below. http://i108.photobucket.com/albums/n5/harman_album/weight.jpg Ultimately I don't believe a f...
by Geoff Harman
Sat Dec 23, 2006 12:05 pm
Forum: Latest Developments
Topic: Boats in build
Replies: 64
Views: 60304

Thanks Karl
I can email the lines as dwg or dxf
Image
by Geoff Harman
Thu Dec 21, 2006 12:35 pm
Forum: Latest Developments
Topic: Boats in build
Replies: 64
Views: 60304

Latest photos of AUS22 There is a slight delay in completionas I have to relocate a laundry and build a new kitchen where the old laundry was. hull is on target weight of 26kg. http://i108.photobucket.com/albums/n5/harman_album/2006_1222ICDC3b0003.jpg http://i108.photobucket.com/albums/n5/harman_alb...
by Geoff Harman
Sat Oct 28, 2006 10:52 am
Forum: Latest Developments
Topic: Designing to Steve Clark's proposed new rules
Replies: 180
Views: 134495

Don't get hung up on Cp's. It is an old coefficient for comparing the hullforms of traditional displacement hulls and has no relevance for semi-planing and planing hulls. By definition it is the displaced volume divided by the product of the area of maximum cross section and waterline length. Some e...
by Geoff Harman
Thu Oct 12, 2006 11:51 pm
Forum: Latest Developments
Topic: Outriggers
Replies: 28
Views: 27042

ICDC3 has now had its ears surgically removed and with a bit a grafting at the back end now looks like this. http://www.internationalcanoe.yachting.org.au/site/yachting/image/thumbnail/18505.gif It has ended up a better option as there is less cantilever load at the stay connection point. So after t...
by Geoff Harman
Mon Oct 09, 2006 11:04 pm
Forum: Latest Developments
Topic: Outriggers
Replies: 28
Views: 27042

Image
Unfortunately I was away in South America and missed all the discussion on "outriggers".
It would appear that the above design meets the new proposal.
But what is the point as the end result is the same.
Geoff Harman AUS 12