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Search took 0.00 seconds. Search: Posts Made By: SARK
Forum: RIBs & ribbing 14 May 2021, 18:40
Replies: 56
Views: 4,374
Posted By SARK
That's good to know, so seems like I am on the...

That's good to know, so seems like I am on the money then.
37 knots is fast enough, only when it's flat it would be nice for more.

What are you getting cruising wise? 28-30 knots is about 4000...
Forum: RIBs & ribbing 14 May 2021, 18:31
Replies: 56
Views: 4,374
Posted By SARK
I tried an SS 16p vengeance & over reved, 37...

I tried an SS 16p vengeance & over reved, 37 knots, but I can see why people use stainless.

& yeah it is a decent V & high bow, wide beam.

Cheers
Forum: RIBs & ribbing 14 May 2021, 17:23
Replies: 56
Views: 4,374
Posted By SARK
Hi Willk Compression, spark, & plug in all...

Hi Willk

Compression, spark, & plug in all good. I had to get injectors cleaned & apparently they should be as good as new. Only issue I have is that its slightly hesitant from tick over, but it's...
Forum: RIBs & ribbing 13 May 2021, 16:40
Replies: 56
Views: 4,374
Posted By SARK
Thanks Limecc And yes I do have them mixed...

Thanks Limecc

And yes I do have them mixed up, ha
I plan to go out tomorrow, so I'll do the trim test.
Forum: RIBs & ribbing 11 May 2021, 11:29
Replies: 56
Views: 4,374
Posted By SARK
Was interesting about the reserve power. ...

Was interesting about the reserve power.

Think stainless is a problem if you hit something, whereas aluminium will dent or chip helping to absorb some impact.

I assume the lower the pitch, the...
Forum: RIBs & ribbing 11 May 2021, 10:55
Replies: 56
Views: 4,374
Posted By SARK
This isn't a question of how do I go the fastest,...

This isn't a question of how do I go the fastest, but a question of should my RIB be going faster, or is there something wrong.

Mostly I'm doing 25-28 knots, but I do like to go flat out once in...
Forum: RIBs & ribbing 11 May 2021, 10:41
Replies: 56
Views: 4,374
Posted By SARK
I said gained revs, not pitch. Yeah understand...

I said gained revs, not pitch.
Yeah understand aluminium warping.

Maybe mine is a 100hp with a 115hp cowling, ha. No I'm sure I've checked the serial number when I bought it.

33 knots is good...
Forum: RIBs & ribbing 10 May 2021, 22:07
Replies: 56
Views: 4,374
Posted By SARK
As said before, I think my outboard might be...

As said before, I think my outboard might be under performing, or set up hindering it.

Lower revs doesn't always mean better fuel economy, its like putting you foot down in 6th gear at 45mph, just...
Forum: RIBs & ribbing 10 May 2021, 21:11
Replies: 56
Views: 4,374
Posted By SARK
With a couple of extra people on board & more...

With a couple of extra people on board & more fuel, think it will bring me down a few hundred revs? So 17" better?

Any experience with Stainless getting more revs?

Thanks
Forum: RIBs & ribbing 10 May 2021, 21:06
Replies: 56
Views: 4,374
Posted By SARK
I thought it was about level, or not too low at...

I thought it was about level, or not too low at least. So definitely not drag slowing it down.

I never experienced cavitation with the 19" prop, with a smaller pitch does that increase the chance...
Forum: RIBs & ribbing 10 May 2021, 20:10
Replies: 56
Views: 4,374
Posted By SARK
So... Cav plate is about 2 inches above bottom...

So...
Cav plate is about 2 inches above bottom of transom.
Trim tap had quite an angle on it, now straightened.

As the weather is crap I knew I wouldn't get a proper test.
However I came across...
Forum: RIBs & ribbing 10 May 2021, 06:42
Replies: 56
Views: 4,374
Posted By SARK
I feel like there's something not right, so if...

I feel like there's something not right, so if I'm under performing in wot, I'm probably under performing cruising too. Efficiency & power.

Like buying a range rover but it only does 90mph, even...
Forum: RIBs & ribbing 09 May 2021, 21:49
Replies: 56
Views: 4,374
Posted By SARK
Avon adventurer, just an example of what some...

Avon adventurer, just an example of what some 115hp can do.
Isn't the old 115hp a 1.8L, & newer ones are something like 2.1L? So probably producing & maintaining a full 115hp.

Good to know I'm...
Forum: RIBs & ribbing 09 May 2021, 19:43
Replies: 56
Views: 4,374
Posted By SARK
Hi five prop (can't remember pitch), 2014 yammy...

Hi five prop (can't remember pitch), 2014 yammy 4-stroke which was tuned
Forum: RIBs & ribbing 09 May 2021, 18:17
Replies: 56
Views: 4,374
Posted By SARK
Just spoken with a friend who had a newish 115hp...

Just spoken with a friend who had a newish 115hp on a 6.8M avon, he got 45 knots! I think a new engine though gives much better power.

I plan to be with the boat tomorrow, check the engine height,...
Forum: RIBs & ribbing 09 May 2021, 13:11
Replies: 56
Views: 4,374
Posted By SARK
Yeah I will do, hopefully in a week or so. ...

Yeah I will do, hopefully in a week or so.
Never thought about tuning before, makes sense.

One thing haven't ever done, is trim up at max speed, outboard is generally level or slightly down in...
Forum: RIBs & ribbing 09 May 2021, 10:25
Replies: 56
Views: 4,374
Posted By SARK
Thanks for that I see steel developments do a...

Thanks for that
I see steel developments do a repair service too, handy to know
Forum: RIBs & ribbing 09 May 2021, 10:03
Replies: 56
Views: 4,374
Posted By SARK
Ok so dropping to a 17" definitely worth...

Ok so dropping to a 17" definitely worth considering then. Would a 4 blade be 17" too if same diameter?

Mercury vs Solas, much in it?
Forum: RIBs & ribbing 09 May 2021, 09:37
Replies: 56
Views: 4,374
Posted By SARK
So really then, my 115hp on 19p is under...

So really then, my 115hp on 19p is under performing
Forum: RIBs & ribbing 09 May 2021, 08:59
Replies: 56
Views: 4,374
Posted By SARK
Limecc What's your thoughts on Orwell boy's...

Limecc

What's your thoughts on Orwell boy's Ribcraft getting 5300 on a 21p with 100hp
Forum: RIBs & ribbing 09 May 2021, 08:52
Replies: 56
Views: 4,374
Posted By SARK
So I'm assuming a 4 blade gives you better...

So I'm assuming a 4 blade gives you better acceleration & grip. But not less revs & top speed compared to 3 blade?

Is your humber a destroyer? A deep V like my Tornado
Forum: RIBs & ribbing 08 May 2021, 23:58
Replies: 56
Views: 4,374
Posted By SARK
Appreciate your time in doing that, thanks. ...

Appreciate your time in doing that, thanks.

So think my Tornado (quite broad & high bow) is much heavier than than "Orwell Boy's" ribcraft? If he's getting 5300 on a 21" prop by 100hp?
Forum: RIBs & ribbing 08 May 2021, 23:17
Replies: 56
Views: 4,374
Posted By SARK
Yeah you want to be closer to 6000 unloaded, so...

Yeah you want to be closer to 6000 unloaded, so your around 5500 when loaded.

There's definitely something not right with mine then not pushing past 5000 with a 19".

Maybe get your injectors...
Forum: RIBs & ribbing 08 May 2021, 22:15
Replies: 56
Views: 4,374
Posted By SARK
Hi thanks Do you get into the higher rpms? As...

Hi thanks
Do you get into the higher rpms? As mine doesn't have the guts to get past 5k. 19" prop too?
Forum: RIBs & ribbing 08 May 2021, 21:12
Replies: 56
Views: 4,374
Posted By SARK
115hp EFi only 36 knots?

Hello everyone

Got a 5.3m Tornado with a 2001 Mercury (yammy) 115hp 4 stroke efi.
Top speed at 5000 revs (wot 5-6k) is only 36 knots with only me & 1x 22L tank on board. Prop is 19".

I...
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