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Re: Other: Resitance figures
By:Bill Hamm
Date: 2/25/2008, 1:40 am
In Response To: Other: Resitance figures (Kudzu)

: I went paddling yesterday with a group of plastic boats. One of the guys
: loaned me a boat to paddle. Now, I am not a young man and I don't get to
: paddle very often. But at the the end of the day I was tired but everyone
: was way faster than me. My ego has no problem with that, especially since
: I was beat and not to impressed with the boat I had been loaned.

: But this got me to thinking about my design and what the numbers really mean
: out on the water. I decided to take the Hydro number and graph them from
: the different versions of the design and just see how they compared. One
: of the big things I was curious about was the scaled down 16' version vs.
: my 19' I was planning on building.

: Once I get these into a graph where I can compare it comes back to what does
: it really mean? How much difference is really noticeable? I used the total
: resistance figure to make my graph. Looking at the 3.5 knot speed there
: the worst design has 2.37 lbs resistance verses 2.1 lbs for the best
: design. Seems minor and I would assume not noticeable to the average
: paddler.

: So this brings me to question. At what point do these number really matter to
: the average paddler? Are we looking at .5 lbs or 1 lbs before we could
: really see a difference?

As the others were saying, sorta I think, is that the paddler doesn't make alot of power, it's not a really efficient thing we're doing. So small differences in resistance can mean alot.

It's only really something you notice when you're paddling with someone else, or against a clock, with gps etc. Just out paddling by yourself it's kinda hard to tell the difference between going slow and going fast, which might be 2 mph difference :) (though that 2 mph may well be 40 - 50%)

All other things being the same (which they rarely are) a longer boat can go faster, might not, but has the ability.

Bill H.

Messages In This Thread

Other: Resitance figures
Kudzu -- 2/24/2008, 10:36 am
Re: Other: Resitance figures
Bryan Hansel -- 2/26/2008, 11:16 am
Re: Other: Resitance figures
Kudzu -- 2/26/2008, 6:16 pm
Re: Other: Resitance figures
John Monroe -- 2/26/2008, 4:44 am
Re: Other: Resitance figures
Bill Hamm -- 2/27/2008, 4:15 am
Re: Other: Resitance figures
Acors -- 2/25/2008, 12:37 pm
Re: Other: Resitance figures
Will Nettles -- 2/26/2008, 12:31 am
Re: Other: Resitance figures
Bill Hamm -- 2/26/2008, 2:23 am
Re: Other: Resitance figures
Bill Hamm -- 2/26/2008, 2:21 am
Re: Other: Resitance figures
Mike Scarborough -- 2/25/2008, 8:50 am
Re: Other: Resitance figures
Kudzu -- 2/25/2008, 9:24 am
Re: Other: Resitance figures
Etienne Muller - Ireland -- 2/25/2008, 7:34 am
Re: Other: Resitance figures
Bill Hamm -- 2/26/2008, 2:16 am
Re: Other: Resitance figures
Kudzu -- 2/25/2008, 9:10 am
Re: Other: Resitance figures *LINK*
Etienne Muller - Ireland -- 2/26/2008, 9:27 am
Re: Other: Resitance figures
Bill Hamm -- 2/27/2008, 4:12 am
Re: Other: Resitance figures
Toni V -- 2/25/2008, 3:38 am
Re: Other: Resitance figures
Kudzu -- 2/25/2008, 9:03 am
Re: Other: Resitance figures
Bill Hamm -- 2/26/2008, 2:12 am
Re: Other: Resitance figures
Bill Hamm -- 2/25/2008, 1:40 am
Re: Other: Resitance figures
Greg Clopton -- 2/24/2008, 10:03 pm
Re: Other: Resitance figures
Tommy -- 2/24/2008, 10:59 am