(Please don’t laugh to hard) So I was watching a shootout between 1 Yam 300 vs 2 Yam 150’s. 300 took the holes hot but twins took top speed.
So if your boat is rates for 300hp. Would it even vn realistic to attempt to outfit it with trip 100’s?
In the event this is a viable option, what would be pros and cons?
More to break, more up front cost.
Twins for repeat systems, but a single 300 is hard to beat.
Plus triple the maintenance
Wellcraft V-20 sportfish with a 200 Evinrude
Not to mention more weight and less fuel efficiency.
Pioneer 222 Sportfish
Yamaha 250
Weight would kill it. It’s hard to beat a single for speed.
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Those 150’s are known to kick out over 160 each as well.
NN
2X on double N, I have a 150 that cranked out at 162!!
ZX
I get cost is a factor. One or two of you may have mentioned that. Based on twins beating out a single in the long haul, is that because of the extra surface contact from having two propellers? Lets take money, to an extent, out of the equation. Would having a third propeller in there get you even higher top end?
Here is a link to the shootout.
https://www.youtube.com/watch?v=gG_-YmGN8SY
If you pause at the end and read the chart. It appears the single and twins are fairly close in fuel consumption other then full bore. But thats not really the point. In theory, 2 beats 1, and 3 beats 2? (In long haul top speed )
Money out of the equation?
Get a 42 Freeman with quads.
Going out and buying it already built takes the fun out of it. I didn’t mean, " money’s no object." I just meant overlook the little extra for upfront and maintaining.
Allow me to ask this slightly differant. And it’s my fault for not being exact. I was trying to avoid being long winded.
Based on performance, why would one choose twins over smaller trips equalling the same hp’s? Bare in mind, what may be the obvious answer to most of you, may not be obvious to me.
Twins at 487lbs, will be about 200lbs lighter than trip 100s.
Less weight, same HP(or better), less drag, less maintenance, probably less fuel.
with the exception of the twin 150 Yamaha
a single 300 will almost always give you more top end than twins.
the additional surface area creates more drag.
adding a 3rd will just make it worse.
the Yamaha 150 produces well over 150 horse power
also the 300 has variable valve timing which gives is better low range performance. the 150 does not have VVT
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Since you mentioned drag, I would imagine anti-fouling paint would cause that some also? And how substantial?
quote:
Originally posted by Ari-anglerSince you mentioned drag, I would imagine anti-fouling paint would cause that some also? And how substantial?
On boats over 20’ pretty substantial. When I did a lot of bass fishing and played with glitter boat waxing the bottom of a hull was a thought, but later learned it will slow you down. a wire brush or 60 grit sandpaper run parallel can give you a little speed gain…
Then there are some bottom coat companies that claim to increase speed and fuel efficiency?https://www.hullspeed.us/index.php/products#!/~/product/category=10282075&id=39268373
I can testify to sea trialing a big boat that owner claimed was engine horsepower issues getting boat to plain out when it turned out to be barnacles. Amazing the difference a clean hull makes.