what engine are you settling on?
love the build by the way
Flyer
- peter-curacao
- * Bateau Builder - Expert *
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Re: Flyer
Thx, didn't make a decision jet , lot's of opinions downstairs in the build thread
- glossieblack
- * Bateau Builder *
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Re: Flyer
Peter, if you want to hear what a Harley Davidson engine would sound like in your Flyer, check out
https://youtu.be/4rd2d3PQSiA
https://youtu.be/4rd2d3PQSiA
Currently building Jacques Mertens ST21 "Skinnydip". Boating adventures: Splash testing and using 'Skinnydip, as a basis of further building refinement; Adams 44’ sailing sloop "Great Sandy" (cruising and maintaining); Iain Oughtred Feather Pram "Mini Dip" (building); Jacques Mertens R13 "Wood Duck" (built and due for maintenance).
- peter-curacao
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Re: Flyer
LOL that's cool thanks for posting, it won't get much cooling though next to my feetglossieblack wrote:Peter, if you want to hear what a Harley Davidson engine would sound like in your Flyer, check out
https://youtu.be/4rd2d3PQSiA
Re: Flyer
Too late, the hull is assembled.
What I was thinking of is venting the steps.
Since steps became fashionable again 20 years ago, builders discovered that there was some brutal vacuum just behind the steps and they now vent the steps through the sides:
It's too late for that but yours is a proven boat, narrower, it is not that important.
What I was thinking of is venting the steps.
Since steps became fashionable again 20 years ago, builders discovered that there was some brutal vacuum just behind the steps and they now vent the steps through the sides:
It's too late for that but yours is a proven boat, narrower, it is not that important.
Jacques Mertens - Designer
http://boatbuildercentral.com
http://boatbuildercentral.com
- peter-curacao
- * Bateau Builder - Expert *
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Re: Flyer
Can't I vent it as showed in my picture and text below?
peter-curacao wrote:Can you explain that a little more? I think it's more or less the same what the guys who are building tunnels in their hulls try to achieve or not? Should I put 2 holes (port and star) in the step under need the waterline and feed it air with hoses above the waterline? I tried to illustrate it in the pic at frame 9jacquesmm wrote:I suggest an improvement: feed air to the step with a cut in the side. Without that, it will cavitate, too much negative P at the step.
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Re: Flyer
No, on the sides.
The gap from the step if not sufficient to draw enough air in the step that is why mist of those boats have big cuts in the side to feed the vent.
Let me search for pictures.
The gap from the step if not sufficient to draw enough air in the step that is why mist of those boats have big cuts in the side to feed the vent.
Let me search for pictures.
Jacques Mertens - Designer
http://boatbuildercentral.com
http://boatbuildercentral.com
Re: Flyer
I can't paste those protected URL's but here are some links:
http://www.sportfishingmag.com/gallery/ ... r-consoles
http://www.boatdesign.net/forums/attach ... ty-152.jpg
http://www.boattest.com/images-gallery/ ... llstep.jpg
http://www.thehulltruth.com/attachment. ... 1259888915
The last one is c;ear. It is not extremely important but will improve performance. The idea is to feed air to the steps from the side.
http://www.sportfishingmag.com/gallery/ ... r-consoles
http://www.boatdesign.net/forums/attach ... ty-152.jpg
http://www.boattest.com/images-gallery/ ... llstep.jpg
http://www.thehulltruth.com/attachment. ... 1259888915
The last one is c;ear. It is not extremely important but will improve performance. The idea is to feed air to the steps from the side.
Jacques Mertens - Designer
http://boatbuildercentral.com
http://boatbuildercentral.com
Re: Flyer
Jacques Mertens - Designer
http://boatbuildercentral.com
http://boatbuildercentral.com
- peter-curacao
- * Bateau Builder - Expert *
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Re: Flyer
Thanks that indeed explained a lot to me, at the end of 2nd page beginning of 3rd it saysjacquesmm wrote:Read this:
http://www.navaldesign.co.za/articles/S ... 0Feb07.pdf
It explains the theory.
Isn't the underlined bold section not somehow what I had envisioned?To avoid this problem air is often sucked through openings well above the waterline,or it may be supplied through tubes in from deck level.
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