I know I shouldn't ask!
 

I know I shouldn't ask! BUT, at cruising speed what kind of fuel consumption would one see driving a 419 w/triple HP500's. This boat would be a big step for me. Fuel consumption could possibly be an issue... :rolleyes:

Re: I know I shouldn't ask!
 

I would guess hat you would be in the 1-1.5 gpm range. Nort aka PhantomCaos should know. His Sunseeker has tripple 502's. Just bump up his numbers a little bit.

Jon

Re: I know I shouldn't ask!
 

Not to rain on your 419 parade, but I remember reading somewhere that the Formula 419 breaks bravos like no tomorrow, because of all the weight. I almost bid on one awhile back, and did some investigating and decided to pass..... I think that was part of the reason for Formula to stop making it.
Good luck,
Dean

Re: I know I shouldn't ask!
 

Someone I know with a 45 Sonic with trip 500's told me he is burning 50 GPH at cruise. :eek:

Re: I know I shouldn't ask!
 

If it helps. Just hooked a scan tool to my 500's a few weeks ago and got the following per engine.

3200 RPM = 18 GPH
3800 RPM = 24 GPH

Multiply that x 3 and you should be close.

Re: I know I shouldn't ask!
 

For me to buy a triple engined boat, it would have to be a real good deal That is one thirsty boat, not to mention three oil changes, three tune-ups and questionable resale value.

Re: I know I shouldn't ask!
 

Dock Holiday, what speeds are you running at those rpm's? Would like to to a mpg equation...... I'd expect to see 1mpg at best with twin 500's just going by the numbers they post in the magazines. And with trips, I would think you would be under 1mpg....

So if you could post the speeds at your rpms, would appreciate it.. Have any numbers at higher rpms?

Re: I know I shouldn't ask!
 

As ya'll know, when gas was $1.50-2.00 per gal (which I thought was alot) I still didn't sweat it that much. But when you have to spend over $300 dollars to fill up your boat (at the gas station, not even considering premium fuel at a marina :eek: ), I figured I would ask to see if it was even worth entertaining the idea.

The only reason I would entertain the idea is that it could be a heck of a good deal!

I'm guessing the cruising speed (3000 Rpm?) should be around 50 MPH?

Re: I know I shouldn't ask!
 

I've had similar bad thoughts about the Mack Daddy Formula 419 - just the *bling* factor might be worth it!

But.... unless you can afford to wipe your bottom with $100 bills.... ;)

Re: I know I shouldn't ask!
 

I'd figure .75-.80 mpg.

Re: I know I shouldn't ask!
 

Dave, you know what cruise is??

Re: I know I shouldn't ask!
 

I know, the 419 has a very big bottom! LOL! :evilb:

What is the optimum cruising RPM of the HP500? Whatever that RPM is, approx what speed would a triple engine 419 travel?

Re: I know I shouldn't ask!
 

3800 RPM = 50 MPH GPS 24 x 2 = 48 Gallons

50 divided by 48 = 1.042 Mile Per Gallon


5000 RPM = 70 MPH GPS 44 x 2 = 88 Gallons

70 divided by 88 = .795 Miles Per Gallon

By boat is a true deep vee. I would guess that the stepped hull guys who are running faster at the same RPM's would be more efficient?

Hope this helps.

Dock