Similar to Triroo, I designed and built a 10.5m power cat with 2 x 90 hp Suzukis, maxing out at just over 25 knots, cruising around 13 knots at 1...
Thank you Old Multi for another year of information. May the Gods of Multihull Knowledge smile on you with Xmas and New Year blessings. I think I...
Oldmulti, from memory the aluminium beams had three cast aluminium hinges - one in the centre, one each end just as the beams joined the inboard...
In 1994 I visited Lymington, U.K. and spoke with the designer of a folding 8.5m catamaran. This boat received an award for design and could be...
Oldmulti, the rudders on my Spyder design were indeed vertical. I made a metal mold ala Tennant and produced two daggerboards as you described -...
On further reflection about lightweight construction re the Spyder design I can say that the hulls were terrific in design but the beam design was...
The Spyder design had mast section main and rear beams with a 'dolphin striker' on a strut which passed through the main beam and took mast...
Terrific thread old multi - thanks! Another folding catamaran I have seen was called Project 8 and won a 'Silk Cut Nautical Award' for design...
These photos hopefully show the arrangement of the pod, the vee and the hull additions. At this stage the pod is not attached to the hulls but is...
Thanks for your suggestion Rurudyne and that would be ideal. The pod is already partly completed in foam and glass and it is only possible to...
upchurchmr, you have almost convinced me that I knew what I was doing! When completed, it will be interesting to observe what goes on between the...
The original tornado hulls remain. The upper forward portion has been added.
I agree there will be extra drag created by having the vee in the water which will reduce the top speed. With the opening 'between the hulls and...
Iron Price, the platform sides and hull sides are almost perfectly aligned vertically although I admit to thinking about putting the hulls a...
upchurchmr, I have pondered your comment re the front of the tornado hulls in my design. The slim width is standard tornado and I put the 'covers'...
The Dierking tornado based boat I think is heavier than my design and certainly wider which leads to trailing complications. I accept that my...
The tornado cat hull has a transom width of about 285mm. The centre pod ends about 900mm forward of the tornado's transom(s) and the pod is about...
Richard, I am familiar with the waterbug and I assume you meant to say the Browns' regularly commute across the water. The waterbug inspired me...
I was intrigued with the tornado(?) hulls pictured. I have a pair of old tornado hulls that I want to use as a fishing platform. The photos show a...
