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Subject: Re: A few questions:

Author:
Becks

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Date Posted: 06:59:24 03/11/02 Mon
In reply to: Paul 's message, "A few questions:" on 19:40:52 03/09/02 Sat

>Has anyone actually done any testing regarding
>different boat finishes and what kinda speed they
>produce, like will paint on the underside slow me down
>compared with straight resin?? and will waxing the
>bottom of my boat do much and also how much does duct
>tape slow you when it is holding on a bumper at the
>front?? cheers

Interesting questions, I think many of us have pondered these on the odd occaision. Although I don't think specific testing has been done
e.g do you really need to drive your car over your head to know it will hurt?
If anyone has done this sort of testing in NZ its probably Martin Bell (?) (specific testing of speed reducing effects that is, not driving over his own head).

I'll give my opinions on your qs.
hull finishes: surely the basic notion of friction applys here? I don't know the exct significance, but I'm guessing that the smoother the better? I think you'd have to use one of those water tanks used for testing boat hull designs. But assuming the aim seems to be to figure out how to go faster, surely the other more significant factors (such as paddler ability and style) should be focussed on.
Also, what about hull distortion? (eg when you paddle real fast and you can hear/feel the hull of your supalite kayak flexing and bouncing around like crazy)
Cam Butler of
Virtuosity
did his 4th year B.Tech project on a polo kayak, so it would be interesting to hear his ideas.

Re the ductape, again, no hard data. But If I'm reffing your game and I see your bumper flapping up and down, you wont be goin no where fast from the subbing area, aye?
i.e. Don't be such a lazy (also inconsiderate!) buga. How much effort would it take to dry your boat and glue the bumper down?
Although your bumber may be taped on, even a small amount of lifting can mean the solid part of your boat contacts with some other poor sods boat when you tackel them.

I'd be interested to see what testing has been done though.
:o)

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Replies:

Subject	Author	Date
Re: A few questions:	cameron	17:20:52 03/11/02 Mon
Re: A few questions: -- Paul, 22:58:20 03/12/02 Tue Good stuff matey -- Becks, 09:24:57 03/13/02 Wed