Hey Rick, thanks! This boat I am designing and building for a client who is trying something different, I can't say too much about the engine except .90 nitro. The tunnel floor is straigh all the way through, yes. Wood on foam! Cowling plug will be made from laser cut framework, then mold taken off that. Stay tuned as I start building! (CAD model stage at the moment, but just about ready for laser cutting!)
Dave is a modest guy and I think he is underselling himself here, he defintely has the ability to turn Tunnel Hull designs into reality!
He built a couple of 3.5cc tunnel from scratch, one he runs with a stock K&B and another design that was run with a MAC. Both of them are lighting fast and a credit to his attention to detail.
Dave is a modest guy and I think he is underselling himself here, he defintely has the ability to turn Tunnel Hull designs into reality!
He built a couple of 3.5cc tunnel from scratch, one he runs with a stock K&B and another design that was run with a MAC. Both of them are lighting fast and a credit to his attention to detail.
It was a pretty simple question....I'm only saying that A picture is worth 1000 words. I'm not trying to make drama or get anyone defensive. Nice form and clean lines are easy to accomplish on the computer in my opinion. A part in hand is what separates someone with software from someone with the ability to build anything.
As far as being modest and underselling himself........."yes, yes and all in good time
" doesn't quite seem compatible with that statement......but I dont know the guy.
I asked the simple questions from the perspective of someone who looks at the output images and wonders how he will accomplish the above.....I'm truly curious.
now based on the replies....I've become truly skeptical.....
I'm not sure if you've had a look at Dave's Website? If you haven't, here is a link that shows a couple of photos of his "living & breathing" boat running and sitting still
Dave is a modest guy and I think he is underselling himself here, he defintely has the ability to turn Tunnel Hull designs into reality!
He built a couple of 3.5cc tunnel from scratch, one he runs with a stock K&B and another design that was run with a MAC. Both of them are lighting fast and a credit to his attention to detail.
It was a pretty simple question....I'm only saying that A picture is worth 1000 words. I'm not trying to make drama or get anyone defensive. Nice form and clean lines are easy to accomplish on the computer in my opinion. A part in hand is what separates someone with software from someone with the ability to build anything.
As far as being modest and underselling himself........."yes, yes and all in good time
" doesn't quite seem compatible with that statement......but I dont know the guy.
I asked the simple questions from the perspective of someone who looks at the output images and wonders how he will accomplish the above.....I'm truly curious.
now based on the replies....I've become truly skeptical.....
I'm not sure if you've had a look at Dave's Website? If you haven't, here is a link that shows a couple of photos of his "living & breathing" boat running and sitting still
Thanks for your interest and comments on my design. Thank you also for your concerns about me being able to turn the CAD models into a tangible product. I haven't been able to check my computer all weekend and when I did initially respond to your concerns and questions I was in an incredible hurry.
All my designs which I intend to build are geared around producibility. I'm the first to agree that anyone can make a pretty picture in CAD, but there are far fewer people who understand the constraints involved when actually producing a product. I would like to class myself as being in the latter category. I think working in the Aerospace industry keeps this concept drummed in to me every day.
The centre sections and sponsons of my tunnel hulls are produced from a minimum number of laser cut ply parts and Klegecell foam. In the sponsons there are an adequate number of frames to reliably describe the changing shape, with foam being glued between these frames and then careful sanding before sheeting, to give a good contact surface for the skins to be glued on.
The cowling obviously requires a plug to be made. This is made from wooden framework with foam in between, with a frame spacing again adequate to accurately describe the required shape. Careful sanding is the key to getting the surfaces correct, and yes the concave areas are the hardest, which require a curved sanding 'block' of lesser radius to prevent opening out of the concave surface. You will have seen a couple of pictures of the 3.5cc cowling plug in its early stages on my website. Yes there was expert help involved in creating the cowling mold, with final finishing of the plug and creation of the mold being undertaken by Ken Retallick of Retallick Engineering, www.retallickeng.com.au. I'll be the first to admit I don't have the time and at the moment the necessary degree of skill to do the molding to a quality with which I would be happy.
Since creating the boat shown on my website, I have been investigating laser cutting as an excellent method of creating the wooden parts required for my Breakthrough Tunnel Hulls. I'm currently putting together the second prototype of the 3.5cc boat, with a different sponson design to try. The 42 inch version shown in this picture is a scaled up version of the latest 3.5cc boat, with design changes where necessary due to the increased size. I will endeavour to take some construction pictures along the way of both sizes of boat, and hopefully these will show you adequately the way that I turn the CAD models in to real boats.
My plan is to sell these boats once I am happy with the design, but as you would well know they have to be of a high level of quality and performance before they reach the market place. I would much rather understate a design and have a really impressive product, than talk up the design to much and have a poorly performing product.
I hope this explains a few things and relieves some of your skepticism.
