new boat.. see you out there!

[ApS]

Originally Posted by VitaBene

"...can your "system" cause an accident...?"

A fair question regarding my CD warning-signals.

A bright flash of sunlight can cause a migraine "aura". That "aura" can—after a few minutes—temporarily blind those who are afflicted with that particular cousin of epilepsy. (Like myself).

The flash from a CD is much less (and much "briefer") than the sun's flash off a flat windshield, say, of a Formula performance boat.

Originally Posted by VitaBene

"...'The total number of spectator deaths and injuries is unknown, but at least 29 spectators died and 70 were injured by race cars or flying car parts at U.S. auto racing events alone since 1999, according to according to The Charlotte (N C.) Observer'"...your closed track nonsense is just that..."

On the road courses I frequent, spectators are seldom subjected to flying car parts OR flying cars. Collisions are far "rarer" at road courses than any track near Charlotte. We road-racers have gravel traps, tire walls and "escape roads": ALL the risk is ALL on the driver—which is as it should be.

Originally Posted by jmen24

"...do you actually use the rev-limiter while racing..."

My rev-limiter has been disabled on my "M-engine" (BMW-Motorsport Division). Concerned about missing a shift (and hitting 9500-RPMs) I relayed that concern to my tuner.

My tuner replied:

"M-engines routinely run over 10,500-RPMs".

Originally Posted by BroadHopper

"...In the past decade I have seen too many of these small crafts get in trouble along the Gilford shore. Especially when the wind is from the North.

And when the wind is from the South, I get to rescue them! (Though most just wade their boat to a beach, pull their boat up and "wait out the weather").

[jmen24]

Originally Posted by Acres per Second

My rev-limiter has been disabled on my "M-engine" (BMW-Motorsport Division). Concerned about missing a shift (and hitting 9500-RPMs) I relayed that concern to my tuner.

My tuner replied:
Quote:
"M-engines routinely run over 10,500-RPMs".

Let me know how that works out for you. Routinely and sustained are two different things. I am glad you agree that hitting redline at WOT without a load applied could be damaging to an engine.

As I am sure you are aware running WOT with a load applied (such as exiting a corner) and running WOT at redline (such as entering a corner or missing a shift) are two completely different animals and the damage to the vehicle is different (in most cases).

[BroadHopper]

Originally Posted by jmen24

As I am sure you are aware running WOT with a load applied (such as exiting a corner) and running WOT at redline (such as entering a corner or missing a shift) are two completely different animals and the damage to the vehicle is different (in most cases).

In marine applications there is always a steady load and there is no missed shifts. Except when you are wave dancing. There is an electronic rev limiter that can be turned on and off from the dash. Really handy when dancing. This is what I saw at the top gun school in Aventura.

I was told not to be too concerned with over revving in marine applications because of steady load. the rev limiters installed by the factory is only for warranty purpose and can be overrided with a reprogram of the ECU. Using the correct pitch prop to get WOT 'in the zone'

A good rev limiter cuts out the spark one cylinder at a time to avoid a total shut down which could cause a mechanical shock and early parts failure. My last look at these products are good examples of rev limiters. The MSD and the Jacobs line.

[OCDACTIVE]

OCD Engine Update.

Just heard from down south........... And everything with the heads and block are fine. The heads were magnafluxed and they are allset. The Block was pressure tested and its good to go.

Wow is that a relief!!!!!!!!!!!!!!!!!

So things should be coming together soon.

Will keep you updated!

[BroadHopper]

24" Revolution 4 4 blade. Best prop so far.

[VtSteve]

That's a mean prop BH. My little 5.0 couldn't turn the Rev4 I tried into a winner. My boat is far lighter than yours, but without the big block for torque. I really wanted the Rev 4 to work, because I heard it was a delight for fixing the Alpha Ones propensity for poor slow speed steering, particularly in reverse.

[BroadHopper]

My previous boat was a Liberator 211 with 350 Magnum. Originally came with a Michgan 19" SS prop. That was the best for that boat after trying tons of props. A 21" Laser was the best speed prop but it was subject to 'blow outs'. It also got the boat up to the point it will 'chine walk' at about 53 mph. Scary! The Liberator was a great boat for the 350. Highly recomend it.

The current Formula f 223 LS with 454 Magnum came with a 19" SS Mercury prop. It was hitting the rev limiter all the time. Swap for a 21" Bravo and again, hitting the rev limiter. Swap for a 23" Bravo and it appears to be a great all around prop. But I still hit the rev limiter. I tried the 25" Bravo solid hub and the boat flies! It was 400 rpm below the rev limiter, but 'blows out' easily in corners or if I try to do a hole shot. The current 24" prop is a delight. No blow outs. Less vibration. Same max rpm. Less speed but love the all around performance.

I want to thank Ron at Lakeport Landing for the prop swaps. I also want to thank Eddie at Winnisquam Marine for swapping the 4 blade. I use EBay as well to buy and sell SS props.

I have a 23" Bravo and a 25" Bravo solid hub for sale. Both 3 blades. I will accept any reasonable offer. I have a 23" aluminum. I keep that when I go on a body of water that I am not familiar with.

[Dave R]

Originally Posted by BroadHopper

I have a 23" aluminum. I keep that when I go on a body of water that I am not familiar with.

A 454 and an aluminum prop must feel like complete mush. I'd love to see high speed video of the blades flexing at maximum engine torque and load.