Flyer

Discussions about the free plans distributed at bateau.com and BoatPlans-OnLine.com.
deuce_454
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Re: Flyer

Post by deuce_454 » Wed Nov 02, 2016 12:51 pm

what engine are you settling on?
love the build by the way



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peter-curacao
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Re: Flyer

Post by peter-curacao » Wed Nov 02, 2016 6:14 pm

Thx, didn't make a decision jet , lot's of opinions downstairs in the build thread :wink:

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glossieblack
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Re: Flyer

Post by glossieblack » Wed Nov 09, 2016 3:42 pm

Peter, if you want to hear what a Harley Davidson engine would sound like in your Flyer, check out
https://youtu.be/4rd2d3PQSiA :D
Completed R13 two part nesting rowboat. ST 21 under construction .... where seeking perfection is recognized as the enemy of the good.

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peter-curacao
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Re: Flyer

Post by peter-curacao » Wed Nov 09, 2016 4:11 pm

glossieblack wrote:Peter, if you want to hear what a Harley Davidson engine would sound like in your Flyer, check out
https://youtu.be/4rd2d3PQSiA :D
LOL that's cool 8) 8) thanks for posting, it won't get much cooling though next to my feet 8O

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jacquesmm
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Re: Flyer

Post by jacquesmm » Sun Nov 13, 2016 1:50 pm

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:
Image
It's too late for that but yours is a proven boat, narrower, it is not that important.
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peter-curacao
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Re: Flyer

Post by peter-curacao » Sun Nov 13, 2016 2:31 pm

Can't I vent it as showed in my picture and text below?
peter-curacao wrote:
jacquesmm 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.
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? :doh: 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 9
[/img]
Image

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jacquesmm
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Re: Flyer

Post by jacquesmm » Sun Nov 13, 2016 3:00 pm

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.
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jacquesmm
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Re: Flyer

Post by jacquesmm » Sun Nov 13, 2016 3:08 pm

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.
Jacques Mertens - Designer
http://bateau.com

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jacquesmm
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Re: Flyer

Post by jacquesmm » Sun Nov 13, 2016 3:12 pm

Jacques Mertens - Designer
http://bateau.com

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peter-curacao
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Re: Flyer

Post by peter-curacao » Mon Nov 14, 2016 1:58 pm

jacquesmm wrote:Read this:
http://www.navaldesign.co.za/articles/S ... 0Feb07.pdf

It explains the theory.
Thanks that indeed explained a lot to me, at the end of 2nd page beginning of 3rd it says
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.
Isn't the underlined bold section not somehow what I had envisioned?

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