Speed

[djtrauma]

3mtr inflatable hull SIB make unknown with 4hp '89 Merc 2 stroke, just me on board @12mph.

[BuffsBoat]

Zodiac classic Mk2C. 3.8 meteres with 15 HP 4-stroke.

I consistently get 21 MPH (33.8 km/h) with 2 BIG adults, and lots of gear.

Have been considering upgrading the 15HP to a 30HP, and would LOVE to know what that would mean for top peed, and time required to plane (which is a chore with the 15HP)

[Zodiac Spindrift]

Nevermind how fast, who's the biggest lol

[lukewhiting]

Originally Posted by Zodiac Spindrift

Nevermind how fast, who's the biggest lol

4.1 meters for me!

[djtrauma]

its not the size of your softie its how you use it.

[Locozodiac]

Originally Posted by djtrauma

its not the size of your softie its how you use it.

+ How well you have your inflatable well inflated to, to perform as expected

Happy Sibbing

[Boatnomad]

Originally Posted by BuffsBoat

Zodiac classic Mk2C. 3.8 meteres with 15 HP 4-stroke.

I consistently get 21 MPH (33.8 km/h) with 2 BIG adults, and lots of gear.

Have been considering upgrading the 15HP to a 30HP, and would LOVE to know what that would mean for top peed, and time required to plane (which is a chore with the 15HP)

Had a Zodiac classic Mk2C with a 20HP 2st once,before the GPS era but remember she was up on the plane real smart

[ASH79]

Quicksilver 340 Sport with 15 hp (American) Mercury 2 stroke 25.2MPH via gps with myself and light gear. Watching this thread with interest

[Downhilldai]

Originally Posted by Mextli

I managed 29.3 mph with my SIB (200kg motor included)

That's a big motor for a SIB. I'd expect it to be faster than that.....

[djtrauma]

any idea how fast a merc 7.5 2 stroke on a 3metre SIB would go? inflatable hull

[BuffsBoat]

Originally Posted by ASH79

Watching this thread with interest

You and me both

[lineofsight]

340 Airdeck 20hp Merc 4 stroke, 9.25 10p (std) 2 large adults, 18 L fuel, fair amount of gear - 37 km/hr.

Just got induction tach so WOT / pitch games can begin. May also try raising motor (want 40km just cause).

[lightning]

Originally Posted by djtrauma

any idea how fast a merc 7.5 2 stroke on a 3metre SIB would go? inflatable hull

My 2.85m Zodiac SIB would do 14-15 mph with a Mariner 6hp 4 stroke on it, with two of us on board plus some gear. So I would imagine yours will do 16-18mph with a 7.5hp

[djtrauma]

just taken my newly acquired merc 7.5hp 2 stroke out for first time today, 19mph WOT on a 3 metre hulled SIB

[Tom465]

3.6m Avon Rib, 30hp Yamaha. Two guys, 23L fuel and light gear. 32mph

[Sinistre1]

Ash,

What prop are you using. I have the same set up (with exception of brand outboard 15hp Johnson) and I consistently get 21mph on gps and just once hit 22. If I am short changing myself at prop, it might be worth the price of admission. Is the 25 more or less consistent or a one time thing. I'd hate to think my Johnson is that weak (pun not intended, lol). I know those last few MPH are difficult.

[lineofsight]

Originally Posted by lineofsight

340 Airdeck 20hp Merc 4 stroke, 9.25 10p (std) 2 large adults, 18 L fuel, fair amount of gear - 37 km/hr.

Just got induction tach so WOT / pitch games can begin. May also try raising motor (want 40km just cause).

Here is a hint for induction tachs - before leave home take them apart and seal them properly... was non-functional for this attempt.

However, on the water boat + motor + 300 pounds passenger & gear saw 41.5 km/hr. Max speed on GPS once home shows 45km/hr but it may not have turned off before being put away thus could have picked up speed on way home. So this means just have to try again Can say got a little bouncy above 40... good fun.

[HCD Canada]

Aquarius Mini-Cat 11'6 stock 2011 25hp tohatsu four stroke short shaft 35mph



Aquarius Aqua-Cat 13'3 stock 2011 tohatsu 50hp long shaft 51mph

[Sharkbyte]

Mk3 Futura 30Hp 2 Stroke - 32mph

[hobnob]

3.1 Zodiac, hard floor, 1 adult +35l fuel

8hp gave a steady 20 mph. on GPS