speed numbers on a v-20

[bradford]

I honestly believe 50+. I don't have a gps yet, and my speedo kicks up at that speed (isn't very accurate anyway). Runs the best in a light chop. I run a 14 1/2" X 19" stainless prop.

p.s. I always drop the bimini and stow anything I'd like to keep when blowing her out. ;)

If it means anything, I smoked an '82 grady white 201 with a 225 yamaha

[cterrebonne]

Originally Posted by bradford

I honestly believe 50+. I don't have a gps yet, and my speedo kicks up at that speed (isn't very accurate anyway). Runs the best in a light chop. I run a 14 1/2" X 19" stainless prop.

p.s. I always drop the bimini and stow anything I'd like to keep when blowing her out. ;)

If it means anything, I smoked an '82 grady white 201 with a 225 yamaha

sweet man....the whole point of over powering is to still do that same cruise speed but at lower rpm to increase efficientcy.

[bradford]

I only run at full speed for short distances usually before putting her on the trailer. Usually I cruise at 3800-4400 rpms. She'll hold a plane at 3200 but "feels" better with a little more gas.

If I ever find a "Skools Out" deal on a 15 X17 prop I might switch to get a little more bottom end and not so much speed.

[cterrebonne]

Originally Posted by bradford

I only run at full speed for short distances usually before putting her on the trailer. Usually I cruise at 3800-4400 rpms. She'll hold a plane at 3200 but "feels" better with a little more gas.

If I ever find a "Skools Out" deal on a 15 X17 prop I might switch to get a little more bottom end and not so much speed.

you have tabs on your boat?

[nipper]

I bet you would hit 55 plus with it trimmed out. Would be a white knuckle ride though. With my V at wot and trimmed up to max speed without over-revving (with a 190 h.p. 4.3 litre v6 I/O) I do at least 45 and the handling feels pretty dicey. Not sure I would want to experience 55 plus in the V

[cterrebonne]

Originally Posted by nipper

I bet you would hit 55 plus with it trimmed out. Would be a white knuckle ride though. With my V at wot and trimmed up to max speed without over-revving (with a 190 h.p. 4.3 litre v6 I/O) I do at least 45 and the handling feels pretty dicey. Not sure I would want to experience 55 plus in the V

it probably wont be so bad with tabs

[bradford]

Originally Posted by cterrebonne

you have tabs on your boat?

No trim tabs, I've got a hydrofoil on the cavitaiton plate.

[cterrebonne]

Originally Posted by bradford

No trim tabs, I've got a hydrofoil on the cavitaiton plate.

those help with planning the boat really good, with tabs with the 225 it should keep the rear end stable but thats a long ways away i still need to finish the hydrostream

[bcmarinamanager]

My CC has gotten up to 45mph on GPS coming down my creek one evening when it was glass. I had the center panel on my T-top on and my side curtains rolled up. I'm running an old as dirt 1992 2.3l 200hp Mercury ob. No tabs, and it was before I got my foil on the engine. I think now i might hit 47-48, I haven't actually tested it with the ideal conditions yet. You should get at least 50 mph. In reality, 25 more horses won't give you a big gain in the top end like it does in a car. You'll shoot out of the hole a bit quicker though.

[bigshrimpin]

You'd have to turn at least 5800+ rpm with a 19 pitch prop to see 50mph.
http://www.go-fast.com/Prop_Slip_Calculator.htm

That's not an easy thing to do, cause most 225's are big heavy 3.0L + motors. If you find a Yamaha 2.6L 225 or a excel or 220 special . . . Those will hit 50+ with the v20. I actually think the boat would be slower with a stock 3.0L Merc 225 vs. a 2.5L merc 200. 200hpdi . . . would probably hit 50mph. The extra 5mph takes exponentially more HP to reach once you get above 45 mph.