Trivia

[Nick]

Ok according to Couchs theory of displacement for a planning hull
and with a little help from wymanns theory
A 35 foot boat with Cad cut ribs made from 3mm epoxy laminated ply
with stainless fasteners rather than silica bronze
varnished with Coelan
with a 600 Hp at 2000 rpm engine
would acheive what maxium speed in Kilometres an hour
Oh and as an aside it weights 3000 kilograms

If the answer doesnt spring to mind
this might help
http://www.psychosnail.com/BoatSpeedCalculator.aspx

[Ricshaw]

Warp factor 4 ... But with the bronze screws ( hand forged in about 1200 BC ) it may achieve for higher speeds .

[Sunbeam11]

its a toughy.......and a roughy...my guess that is...its top speed would be 165.5 kph, but I am assuming thats at peak revs.....wheras your stating 2000 (only idling)....what am I missing. .

[Nick]

Ok you win
you're turn to ask a question
That was quick
I got 166.80Km/h
and 2000rpm is peak revs
but I made a mistake its actualy 650hp at 2000rpm
So in theory you should get 188Km/h at 2000rpm!
Have a look here for a pic of the engine
http://cawpba.com/phpBB3/viewtopic.php?f=11&t=107

[Sunbeam11]

thanks Nick.....a little by default....I think your generous letting me have that.
Arrrh... so that what I was missing...a big displacement engine with low torque and a long stroke....but then again I know bugger all about engines.
I was thinking more of a 350 Chev peaking at 5000-6000 revs.

Okay next question......something short and sweet.....
Stainless Steel fastners were mentioned in the previous question.....triggered this one.

Q. With stainless Steel, what element must be present to prevent it from rusting???
cheers Peter G

[bootlegger]

Depending on the type of Stainless it has varying amounts of Chromium and Nickel.

[Sunbeam11]

Okay...just your general run of the mill stainless..say 304 or 316 for bolts, fixings,marine hardware type stuff. (hey believe me..i'm no metalurgist). Between 13% and 26% chromium, but dont get to caught up too much with that detail. Keep it simple.

[bootlegger]

Ok a nice simple one for those South of the border. Whats VSBC stand for?

[bootlegger]

Ok a nice simple one for those South of the border. Whats VSBC stand for?

[Nick]

I thought the element that had to be present to stop stainless steel rusting was oxygen
Or is that only some types?