Ring 20 Merc 200hp - How should it perform?

Just4Fun · 15-03-2011, 07:45 PM

I am hoping that someone out there can give me the benefit of their experience and tell me what speed I should be capable of getting out of a Ring 20 with 200hp Merc. No jacking plate; standard leg.
Am I being over optimistic to expect 70mph ?
Thanks...

143 · 15-03-2011, 07:48 PM

yea should do something like that depending on general set up..

john walmsley · 15-03-2011, 08:29 PM

Quote:

Originally Posted by Just4Fun

I am hoping that someone out there can give me the benefit of their experience and tell me what speed I should be capable of getting out of a Ring 20 with 200hp Merc. No jacking plate; standard leg.
Am I being over optimistic to expect 70mph ?
Thanks...

I had 64mph on gps flatout in my Ring 21,with a 200opti.
Suffered realy bad from prop torque,but lots of fun

Paul E · 15-03-2011, 10:21 PM

Quote:

Originally Posted by john walmsley

I had 64mph on gps flatout in my Ring 21,with a 200opti.
Suffered realy bad from prop torque,but lots of fun

Do you know what prop, revs, engine height and if there was any setback at all?

Bänkt · 16-03-2011, 08:06 AM

You should be able to do 70 mph. I have my target speed set to 70 knots with my Ring 21 225 Opti. Top speed this far is 75 mph.

This season the engine will sit a bit higher, new hydraulic steering, foot throttle and hopefully a lift.

My 21 is a handful at speeds over 55 mph.

grandmas denture · 16-03-2011, 08:51 AM

... r20 200 in all-day-use-mode does 65mph

Quote:

Originally Posted by Bänkt

... Top speed this far is 75 mph ...

... what planet, sounds like less gravity ?

Paddy · 16-03-2011, 11:41 AM

Quote:

Originally Posted by grandmas denture

... what planet, sounds like less gravity ?

You have taken the words right out of my mouth, mate.

@Bänkt: What kind of prop do you have, rpm at wot, gear ratio?

Carl · 16-03-2011, 12:15 PM

Quote:

Originally Posted by Just4Fun

I am hoping that someone out there can give me the benefit of their experience and tell me what speed I should be capable of getting out of a Ring 20 with 200hp Merc. No jacking plate; standard leg.
Am I being over optimistic to expect 70mph ?
Thanks...

mid 60 mph on a good day,and watch out for the chine ride,if your set up isnt right

Renegade · 16-03-2011, 01:38 PM

Quote:

Originally Posted by Bänkt

You should be able to do 70 mph. I have my target speed set to 70 knots with my Ring 21 225 Opti. Top speed this far is 75 mph.

This season the engine will sit a bit higher, new hydraulic steering, foot throttle and hopefully a lift.

My 21 is a handful at speeds over 55 mph.

i think you could come up one hole, that looks a bit deep, this would have torque problems and also the slightest wave or wash will send the nose up in the air, IMHO of course,
But again props and set up are the key
Paul

Just4Fun · 16-03-2011, 02:01 PM

You are all doing a good job of putting me off wanting to go fast in the Ring 20.

My last 2 boats have been rock solid sterndrive boats - one topping out at 70 MPH and the other 55.

For a chine happy boat, I have to go back to a Marshan 17 that I had until around 20 years ago, and I remember that half the fun was taming it flat out.
I hope I haven't lost my reactions or bottle!

Renegade · 16-03-2011, 02:06 PM

i think it is more than possible but props will be key, also weight, the lighter you are the better, what props and rpm are you spinning?

john walmsley · 16-03-2011, 08:23 PM

Quote:

Originally Posted by Paul E

Do you know what prop, revs, engine height and if there was any setback at all?

Prop was a 23p 3 blade Laser or Trophy.revs were about 5900rpmthe engine height is the same as the pics of the Ring in this trend. had no set back,engine was sat on the tansome.
The boat was set up for playing.
Could of got more speed with different props and lifters but i was well happy with that.
The acceleration was awesome

Tony Davis · 16-03-2011, 08:34 PM

My best speeds were with a 24" chopper on a 2.4 200, and a 23" laser on a 2.5 200.

chopper · 16-03-2011, 08:39 PM

Quote:

Originally Posted by john walmsley

Prop was a 23p 3 blade Laser or Trophy.revs were about 5900rpmthe engine height is the same as the pics of the Ring in this trend. had no set back,engine was sat on the tansome.
The boat was set up for playing.
Could of got more speed with different props and lifters but i was well happy with that.
The acceleration was awesome

Probably not 70.

Tony Davis · 16-03-2011, 08:42 PM

I don't think he said he did 70, I think you'll find he claimed 64

Tony Davis · 16-03-2011, 08:44 PM

Quote:

Originally Posted by chopper

A 23p at those revs with that gear ratio can't run 70 - not physically possible.

Unless your paying for an advert in Powerboat Magazine

gmc · 16-03-2011, 08:47 PM

my 21c runs at 68.9 with a 23p tempest plus 200 hp 2.6 yam revs 6/6250 15 in set back nice drive and safe

chopper · 16-03-2011, 08:49 PM

Quote:

Originally Posted by Tony Davis

Unless your paying for an advert in Powerboat Magazine

Hehe!

Ringmaster · 16-03-2011, 08:52 PM

Quote:

Originally Posted by gmc

my 21c runs at 68.9 with a 23p tempest plus 200 hp 2.6 yam revs 6/6250 15 in set back nice drive and safe

Well said John. I'm getting 65ish at the mo with a 2.4 bp. With fuel tank moved and boat set up better, I'm hoping for 71/72.

As for handling and chine walking.....pffffft! I've not had any probs whatsoever.

john walmsley · 16-03-2011, 08:53 PM

Quote:

Originally Posted by chopper

A 23p at those revs with that gear ratio can't run 70 - not physically possible.

Like i said it was set up for playing.
The fuel tank was moved to the bow to keep it down,had bench seat, ancor and lots of extra weight in the boat most of the time.