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Old 11-02-2009, 01:36 PM
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Default Whats your Speeds? Top End and Cruise
I just took out my New (to me) 26' Cape Horn with twin 250 etecs This weekend and I was pretty happy with the speeds I was getting.

5 people, 150+ gallons of fuel and light gear. At 3300-3600 RPMS I was running between 28-34 mph.

at 5800-5900 rpms I was running right at 59mph wide open.

Just curious how those speeds compare to some of the other boats out there.
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Old 11-02-2009, 01:44 PM
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You may be able to get a little more out of her with different props. You're a little slower than I am and seems like you should be a little faster.

25 Contender w/ 250' and 24" bravo props. (28' LOA)

On plane, add 7 mph to the tach and it's a good estimation of my speed. i.e. 3500 RPM = 42 mph, 5000 RPM = 57 mph. Top speed is 64 mph +.
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Old 11-02-2009, 01:48 PM
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1989 Egg Harbor 35' Sportfish - twin 340 hp Mercs.

Cruise: 3200 rpm 18 mph
Max: 4200 rpm 30mph
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Old 11-02-2009, 02:46 PM
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WOT with clean bottom - 13.5 knots

Cruise - 6 - 7 knots

I can cruise faster, just use more fuel.
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Old 11-02-2009, 02:56 PM
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ocean 38 1989 twin 3208 cats 375 hp
top end 24kts at 2800
cruise 20kts at 2400

25ft formula 3 Built in Trinidad with single 200 hp yamaha 0x66 2 stroke
top end 48 mph at 6000 rpm
cruise 32 mph at 4000 rpm
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Old 11-02-2009, 02:59 PM
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23' w/a, hardtop, 300hp mercruiser w/alpha 1 gen II.

3000 - 26mph
3100 - 27.5mph & 3.4mpg
3200 - 28.5mph
3300 - 30.5mph
3400 - 32mph
3500 - 33mph
5000 - 47mph (one time)
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Old 11-02-2009, 03:34 PM
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At 4000 rpm I do between 26 - 32 mph depending on seas. I have never been WOT long enough know..
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Old 11-02-2009, 03:43 PM
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Mako 253 twin 135 optis

cruise 25 kts at 3500

tops out at 36 kts at 5000, anyone think the RPMs are a little low?
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Old 11-02-2009, 03:44 PM
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17' century raven 165 mercruiser wot 51.2mph me only . cruise at roughly 35mph 3400-3500 rpms 3 people 39 gallons fuel and gear spinning a 14 5/8" SS 21 P wheel
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Old 11-02-2009, 03:56 PM
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Albemarle 24 cc 383 Mag MPI Jackshafted to Bravo 3 24"prop
Cruise: 24-25kts-3200rpm-12gph
Top end: 38kts-5200rpm-24gph
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Old 11-02-2009, 03:59 PM
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40mph top end @ 13gph
30mph cruise @ 7gph
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Old 11-02-2009, 04:03 PM
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21 Contender with 1997 Yamaha 200hp 4400rpm = 34 MPH burning 11GPH and currently WOT 5200 at 42mph. Getting her out of the shop with fresh rebuilt carbs hoping to see 5600 and somewhere around 45mph.
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Old 11-02-2009, 04:29 PM
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Cruise at around 36-38 mph
WOT is 53 mph light, 51 mph loaded
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Old 11-02-2009, 04:30 PM
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30' Scarab Sport with twin 250 E-Tecs. Top end 60 MPH with light load. Best cruise speed is around 38-40 with a good load. I have Mercury Bravo 1 four blade props, 22 pitch.

I have gotten a little more speed with some other props but thses Bravo's have the best all around performance.
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Old 11-02-2009, 04:39 PM
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Default Rpm
Quote:
Originally Posted by JerseyMako View Post
Mako 253 twin 135 optis

cruise 25 kts at 3500

tops out at 36 kts at 5000, anyone think the RPMs are a little low?
I used to have a pair of 150 opti on a 26 foot CC, yes you should be getting more RPM than 5000. Those motors per Mercury should be up to 5600 WOT? You might want to give the Mercury guys a call??
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Old 11-02-2009, 04:42 PM
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28 Bluewater, twin DF300's. 40mph cruise at 4000rpms, 61mph WOT at 6250rpms running 26p Bravo I's. WOT with Suzuki 23p 3 blade props was 63mph. Getting 2mpg at 40mph...
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Old 11-02-2009, 04:47 PM
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377 Intrepid w/ 3-300 hp verados WOT 5800 rpm @ 55 mph w/ 400 gal fuel cruise 3800 - 4000 rpm @ 36- 40 mph average 1 mpg or little better on an all day trip usally run cruise or faster looking to play w/ props to achive 6000-6200 rpms @ WOT now running 24 revs
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Old 11-02-2009, 04:54 PM
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My 23' KeyWest WA with twin F115's.....

Cruise 28mph 4200 9gph

Top 42mph 5800 16gph

The motors seem to have a "sweet spot" around 4500; 32mph 11 gph
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Old 11-02-2009, 05:25 PM
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I have a 26 cape horn with twin f200 yamahas... wide open light is 54 at 6000 rpms.. depending on seas we usually cruise at 25-35 but when the ocean is nice we turn them loose.. It is nice come in from 85 miles offshore in an hour and fourty five minutes..
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Old 11-02-2009, 05:30 PM
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54 mph 18 gph top end 34 mph 6gph cruise my boat is in my signature
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