36' speed to horsepower ratio
 

What is the general rule of thumb on a 36' apache with respect to power and speed.

I know that with twin 502 Efi's i can get 65 mph out of her consistantly but what will it take to go:



70mph

75mph

80mph, etc?



I am just dreaming at this point but I like to plan projects well in advance. I saw a nice 525efi package in the classifieds with XR's but then got to thinking that with my heavy bucket an extra few hundred horsepower will barely get me over 70mph.

I appreciate your thoughts...

baywatch, I had a '94 36' with 575 HP Eickerts, and it ran about 78-79 MPH. Twin EFI 525HP's in an older 36' should run close to 75 MPH. I imagine twin 700's would get you 85 MPH.

mid/upper 80's w/ 800's...... should be running low 90's but the X is deep.

With 700 hp I ran 81.

tony montana has 575 merc's and i think he run's low to mid 70's

Thanks guys..

RHC had 600scs and bravos and think he ran upper 70s with that stock setup.

you must know how much your boat weighs to figure this out....the weights vary..as do the 41s.....8500 to 14,000lbs wet are 2 that i know of.....there is a formula that bob uses.........m.m.....p.s..its not how fast it runs....its how long it runs fast.....cya....

I didn't realize the 36's varied that much like the 41's. I will hit the cat scale next time I have it on the trailer. I do know that my 12,000lb poly lifts it with a full tank of fuel.

indio, I like your last phrase and that is part of the reason I haven't messed with anything yet is because the stock 502's are very reliable, easy to maintain, and are really easy on the fuel.

baywatch,

Bobby told me that most of them weigh between 9500 and 10500 DRY.

We had 700 a side in one with 3 drives and it would touch 83-84 on the speedo.

my 41 with 700 per side is mid 90s.....go figure.......8600 lbs wet.......a great buy for a lucky guy or girl.........m.m...

hey baywatch
i have the same set up on my 36 apache leave it alone take it from me i had so much fun with the 502efi and really easy to maintane just remember to have the injectors check after each 100hrs.
for the best set up for you would be wait to kill those engines and go with a pair of 496 with cmi headers and change the prop

good luck if ever in new jersey look me up
36 apache (savage)
41 apache (tatonka)

good talking
mike

I might have to take a trip to Jersey just to get a ride in Tatonka.. That is one beautiful machine.

If you ever find yourself at LOTO you are more than welcome to hop in with us as well.

Mark, that boat should sell in a heartbeat!!!

Mid 90's?? I thought it ran low 90's with the 800's and mid 80's w/ the NA 700's? Still impressive either way for an ole resin bucket!

94 mph......guarenteed......if it doesnt run 94 you can have it for free........if it does 135k ok..

KIDDS, What are you spinning for props on the 36'?

I Had A Pair Of Mercury 24 Pitch I Think, Becuase I Didn't Even Get My 36 Wet This Summer Since We Bought "tatonka" Last Winter The 41 Is So Different From My 36 It's Incredible . Ya Just Put Her Away Last Weekend So Sad.

Hey Baywatch
I Saw Your Boat For Sale Last Year You Got A Great Deal On Your 36, What You Should Do Is Start Looking For A Pair Of Xr Drives

Horsepower divided by weight equals then square root that sum then multiply by 250 equals multiplied by .88 should give you a fairly accurate speed

:readinghelp::cool-smiley-027:

Dang that's pretty close. To think there actually was a formula after all.

you crack me up Mark. Hope everthings well with You & Lucy

Tommy

all is well..and you...mark..