Worse design

Discussion in 'Boat Design' started by gonzo, Jan 26, 2010.

Thread Status:
Not open for further replies.
  1. frank smith
    Joined: Oct 2009
    Posts: 980
    Likes: 14, Points: 28, Legacy Rep: 185
    Location: usa

    frank smith Senior Member

    I am sure you have one that you could post .
     
  2. Easy Rider
    Joined: Oct 2009
    Posts: 920
    Likes: 46, Points: 0, Legacy Rep: 732
    Location: NW Washington State USA

    Easy Rider Senior Member

    I am sure you have one that you could post

    Why do you guys say these things. It's just bait and they'll just stomp on you again.

    Easy Rider
     
  3. woodworm
    Joined: Mar 2007
    Posts: 24
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Germany

    woodworm Junior Member

    See that is real bad design.
    Function of this Hellwig Panther made in east germany
    .
    Every little wave will overflow the boat while the boat is going slow .

    Best regards
    Erhard
     

    Attached Files:

  4. frank smith
    Joined: Oct 2009
    Posts: 980
    Likes: 14, Points: 28, Legacy Rep: 185
    Location: usa

    frank smith Senior Member

    the stern fins look like they came from a 59 Chevy impala
    [​IMG]
     
  5. woodworm
    Joined: Mar 2007
    Posts: 24
    Likes: 0, Points: 0, Legacy Rep: 10
    Location: Germany

    woodworm Junior Member

    Hy Frank,
    I mend ; the terrible function of boat which came from the keel and construction design
    It is realy bad design when a 4,5 m boat is not able to take a half meter wave wile it is going slow.
    The cadilliac-fin design on the boat is well done and many people are loving the panther, but awful to be in the boat while the boat is not gliding.

    In boat design the function is nothing to discuss, the form can follow whatever she will but never make a boat dangerous.

    Acually I am building something looking little bit like that,But the hull will lay better in the water.
    have a look here if you wish
    http://www.boatdesign.net/forums/wo...oration/runabout-made-out-firewood-30712.html
    Sorry english is not so easy for me.
    Best regards erhard
     
  6. troy2000
    Joined: Nov 2009
    Posts: 1,743
    Likes: 170, Points: 63, Legacy Rep: 2078
    Location: California

    troy2000 Senior Member

  7. frank smith
    Joined: Oct 2009
    Posts: 980
    Likes: 14, Points: 28, Legacy Rep: 185
    Location: usa

    frank smith Senior Member

    It looks like a small boat with a lot of weight in the front, and I would agree
    that it is not good . Is that the motor in the middle , maybe the distribution of weights is not good .
     
  8. hoytedow
    Joined: Sep 2009
    Posts: 5,403
    Likes: 195, Points: 73, Legacy Rep: 2489
    Location: North of Cuba

    hoytedow Wood Butcher

  9. Loveofsea
    Joined: Jan 2007
    Posts: 147
    Likes: 6, Points: 0, Legacy Rep: -68
    Location: Southern California

    Loveofsea New Member

  10. frank smith
    Joined: Oct 2009
    Posts: 980
    Likes: 14, Points: 28, Legacy Rep: 185
    Location: usa

    frank smith Senior Member

  11. Willallison
    Joined: Oct 2001
    Posts: 3,590
    Likes: 130, Points: 0, Legacy Rep: 2369
    Location: Australia

    Willallison Senior Member

    I don't wish to dwell on such a controversial topic, and I apologise for not having seen it elsewhere, but perhaps you could post a pic of this mystical skiff of your Loveofsea....

    Frank,
    Difficult to say much from the images you've posted, but two things spring to mind immediately. The first is the already discussed extreme amount of hook in the bottom. It would cause pretty significant dynamic instability - even at quite low speeds. Effectively altering the shape of the bottom can be done already... with trim tabs. They are simple, inexpensive and effective. No poit trying re-invent the wheel with something that's bound to be the opposite on at least two fronts.
    The chine shape appears to be somewhat extreme, particularly up forward. Angling chines down at more than about 3 degrees can actually make a boat wetter. It will also tend to make the ride harsher and can tend to make the hull dig in. Combined with the hook bottom, I could imagine this being a nightmare in a downhill run....
    Lastly, on the aesthetic front, I agree, that triangle sitting on the deck doesn't appear to fit with any other aspect of the boats shape.
     
  12. frank smith
    Joined: Oct 2009
    Posts: 980
    Likes: 14, Points: 28, Legacy Rep: 185
    Location: usa

    frank smith Senior Member

    I hope my new euro nove is more to your liking, I have made all the changes you have suggested, and converted it to a tunnel drive . the fins were added to give a subtle retro flair,very attractive if I do say so myself. i hope you approve and that we can come to an agreement on the final design soon.
    Converted_euro nova.jpg
    frank
     
  13. Willallison
    Joined: Oct 2001
    Posts: 3,590
    Likes: 130, Points: 0, Legacy Rep: 2369
    Location: Australia

    Willallison Senior Member

    Impossible to tell really, just from that one angle, but it...well...errr... looks....err...dangerous. A befitting inclusion in this thread...:eek:
    ...sorry.....
     
  14. Joe Petrich
    Joined: Jun 2008
    Posts: 165
    Likes: 10, Points: 18, Legacy Rep: 141
    Location: PNW

    Joe Petrich Designer

    Has anyone considered that the boat in the video was designed to stuff the bow? Search for SeaDoo Challenger on Youtube. I believe that is the boat in the original video. As I recall the Challenger has two jet drives. When you dump the buckets into reverse at speed the back end naturally rises on the jets and stern wave and the low bow drops and momentarily buries itself, filling the shallow self draining cockpit. The boat will also do 360 and 720 degree turns due to it's flat bottom and differential thrust from the two jet drives. So it seems the boat performs as it is supposed to whether you like that behavior in a boat or not.

    Carry on!
     
    1 person likes this.

  15. Sheepy
    Joined: Apr 2009
    Posts: 27
    Likes: 4, Points: 0, Legacy Rep: 61
    Location: Aus

    Sheepy Junior Member

    I am actually a professional fisherman and I can assure you, you have not been out in 50+ knots of wind without taking green water over the bow, unless you were actually in a small lake, not the ocean. Anyone that has actually been out in these kind of conditions would know I am right.There would be whitecaps bigger than your skiff.

    It is your kind of boneheaded arrogance that gets people killed, attempting to rescue people like you!

    The worst I have been out in is 70 + knots on the boat in the pic,(grey wheelhouse) your skiff would fit inside this boat 10 times over. She took green, white blue water completely all over her from every angle. Some of the whitecaps were twice the size of this boat.

    [​IMG]
     
Loading...
Forum posts represent the experience, opinion, and view of individual users. Boat Design Net does not necessarily endorse nor share the view of each individual post.
When making potentially dangerous or financial decisions, always employ and consult appropriate professionals. Your circumstances or experience may be different.
Thread Status:
Not open for further replies.