Speed

[skinnylegaman]

I have a tender of 3 meter rib with 30 jp Honda engine is there a way I can gain anymore speed

[diesel do]

A few options to investigate.

1) Make sure engine is in optimum rpm range, ie correct prop.
2) Check engine transom height and try adjusting upwards.
3) Adjust engine trim angle.
4) Fit trim tabs (doesn't always work)
5) Remove weight
6) Tune engine (ie bring back to factory spec)
7) Bigger engine

Hope this helps

[skinnylegaman]

I will give a few ago when the weather gets better

[Limey Linda]

A larger than 30 hp engine on a 3 m RIB would not be a good idea
Probably a weight distribution /trim problem.

[skinnylegaman]

The max is 30hp for it and I do not want to spend a lot of money on a new engine

[Dhf]

Hi Skinnylegaman,
So what speed are you getting with current setup.

[9D280]

Originally Posted by skinnylegaman

3 meter rib with 30 jp Honda engine

Aerodynamic crash helmet like the speed skiers????

That is a LOT of gee gees for a 3m. Do you race it, or just need the thrill of more speed?

Engine max RPM at WOT would be a useful one as well to get a feel for your prop pitch.

....and welcome to ribnet!

[Locozodiac]

A 3 mtr standard rib with a 30 HP is out of this world, that size rib is normally rated for a 20 HP. Can you post pics of that rib/engine combo.

Happy Boating

[ncp]

We have a 30 hp 2-stroke on a 3.77m sib and we're getting 29 mph with 3 people & gear. In that boat, I wouldn't want to be going any faster!

With a rigid hull, I could see going a few mph faster.

[skinnylegaman]

We have a rigid hull we are at 24 knot and I don't race however have had some fun with other ribs I will have a look for a picture

[skinnylegaman]

A pic for u

[9D280]

NCP - 29mph = (approx) 25 knots

Skinny - How heavy is your hull etc? Is it a Deep V? (Not a hull I'm acquainted with) Yopu are getting approx 2 knots more than I got out a lardy waterlogged SR4 with a 30, so you might get a bit more out of her, but your speed is in the right ballpark. Any idea of your WOT revs?

[skinnylegaman]

Erm not sure on revs and the hull is deep v I believe the hull is heavy

[GJ0KYZ]

Isn't 25kts fast enough? I don't know, kids nowadays are obssessed with speed. I remember during the war we had to make do with...zzzz

[skinnylegaman]

I like to work towards something give my self a challenge to do

[mister p]

Originally Posted by Limey Linda

A larger than 30 hp engine on a 3 m RIB would not be a good idea
Probably a weight distribution /trim problem.

who threw her a bone?

[mister p]

that was genius, get's me, wrong as it may be it's the quote of the decade.......in context of course