Yamaha 300 on V21 performance

[THEFERMANATOR]

Originally Posted by spareparts

some one give me the $22,000 and I'll make my V run faster than that

I'm thinkin a 280 MERC 2.5L would do the trick. Or you could find an old EVINRUDE V8 that's been worked a bit for well under $10K and say hello to 60+(if not put it well into the 70's). Then again somebody better be looking into building a pad in the back to be able to keep it straight at speed.

[RidgeRunner]

I agree, your gonna pass the hull speed with the v-8, guaranteed with Sr. Dave Bush hands on it. I always assumed "hull speed" to be the outer limit. So has anyone ever found that limit? Work on COG and a pad. Reduce the tendency to fly the nose while getting more of the boat dry. A 300 configured correctly I would think could put you near ridiculous speed. Did I mention a serious weight reduction of the hull and scantlins too? Composite everything and light. Made just for running. a Dave Bush v-6 would get you there. Check out the accelleration and sound on this bassboat. http://www.youtube.com/watch?v=1kKIiUQpk-Y or any Dave Bush video for that matter.http://www.youtube.com/watch?v=GcrpMbSXWF8

[bgreene]

I'm just saying that the new, lighter Yami 300 could work on a V21.

Generalizing with 8-10 mph speed increase per 50 hp, I'm still thinking 65 mph top end.

This is with the standard transom, not the bracket.

Using the tabs and engine trim, calm water 50 mph " cruising speed " should be fairly easy.

[RidgeRunner]

E-tec powered STV Summerford Tunnel Vee - River Rocket with a shortened mid runs 127 mph on the Suwannee this past weekend.
Monty Racing. Literally dozens of HP boats. Here are a couple.. Suwannee Nov. 2013 018.jpg

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[RidgeRunner]

Did I mention the sunburn/windburn? What a nice day Sat.

[spareparts]

that Talon is the deal, always one of my favorites. The 'stream looks brand new, hope the coring has been replaced. trying to figure out the rest, black hulled boat Lake and Bay? orange tunnel Cobra? That's Seebolds old IOGP two seater? One year at Augusta, they took some girl that was a news caster for a spin in it. they had a hot mike on her. When Bill hit it from the dock, she screamed all the way to the first pin, after pulling 4 g's in the first turn, she fell silent. They only did one lap

[RidgeRunner]

Yes that is Parker Rabe with the inline 2 seat Seabold, giving a few uninitiated folks a ride. The Copper colored cat is a Simmons Custom Boats. The 22' twin rigged Talon has 200XS's. The black hull is a Big-O bass boat converted into a 84 mph flats boat. The Viper Hydrostream is like brand new, the seats are even original. This is the 1979 that never had the holes drilled in the transom until recent.

There was a 30+ footer full canopy offshore cat at the Santa Fe split when we got there. Lots of eye candy. Dozens of boats couldn't find a place to pull-up on the point. That means there were well over 100 boats. I had a rope on this one but let it get away.. Towing Shot.jpg This is when 250 hp comes in real handy.