Folding RIB first impressions part one

[philpot]

To be very honest, I have no real knowledge of the 360 but I would assume given that the weight is only a little more than the 330, a 10hp would be fine.

The factory have said that these hulls are very efficient needing smaller engines. The 15hp two stroke I had on the back really made it go but I would suggest contacting Steve Bruce directly to get more information, I have a feeling that Steve did some tests using a 10hp Suzuki but not certain.

Phil

[Ronaldj]

If they can get 15mph out of a 330RF with 2 people and a 5hp outboard.
A 360RF with 2 people and a 10hp outboard should give you between 15 and 20mph

[Ronaldj]

Originally Posted by ba_fisher

Ronaldj, I also live in the US and found an ebay listing of the WinBoat. The seller is in San Francisco and is close to where I live, so I will try pay them a visit. Will keep you guys posted.

The dealer you mentioned doesn't have any boats in stock and won't have any until February.
If you can locate a brick and mortar store that would be great.
When we contacted him he said he would have a boat at the San Francisco boat show

Bruce in the UK has boats.
So far there are 2 guys in NYC and me in Delmava who want this boat.
I live about 200 miles south of them , but we occasionally get to boat together
There are about 5 or 6 guys they go out with weekly and they all have sibs.
If you can't have a trailer (that's dolly in the UK&#128521
This boat looks like it will be perfect

Since we are forced to use 4 stroke outboards in North America outboard weight has become an issue.
Not to mention that after age 50 or in some cases 60.
You are not willing or in some cases able to manhandle a 100lb or 45kg

[ba_fisher]

February isn't too bad. Rock fish season is closed Jan 1 ~ Feb 28 here in California so I don't mind waiting. Plus it will be so cold, like in the 50~40s Fahrenheit here! :-)

BTW "trailer" is a dolly and a "dolly" is a trolley?

My back is not in the best of shape, so I am thinking of making a "trolley" like this chap:

https://www.youtube.com/watch?v=KzFU52AaN-k

I would probably add small wheels on the wood block to make it slide into the back of my Honda Odyssey van, which has a flat floor after you fold down the back seats.

For use on the beach, I want bigger wheels, though. If I had any skills on aluminum welding (sadly I don't), I would make myself something like this:

https://www.youtube.com/watch?v=ut72u-xk0Sw

[Sinistre1]

I so wish I had seen this boat before I boat my last boat!!! I would definitely have one in my closet now. Lol. Hey Ronaldj... sorry if I've been incognito been working on a promotion and now it's tons of training! I'll be down your way in March!

[Max...]

Originally Posted by ba_fisher

Phil,

From the WinBoat performance data, the 360RF with a 15hp can make 23.9 mph with 2 people on board. So maybe a 10hp can make at least 16mph?

Originally Posted by Ronaldj

If they can get 15mph out of a 330RF with 2 people and a 5hp outboard.
A 360RF with 2 people and a 10hp outboard should give you between 15 and 20mph

This sounds very optimistic. You will not see over 13 knots with 2 people and a 5 HP on any SIB.

Hard floor (folding or sectional), regular HP floor or more rigid very tight deepish V (ie Aerotec) the top speed will not differ much.

The figures quoted do not match up to real world speeds as reported by members on here with a huge variety of rigs.

A typical 3.4m SIB with 9.8 or 15 HP lightweight 2 stroke will reach 17 - 18 knots with a normal gear load and 1 - 2 people (light 11 stone each not heavyweights).

Regardless of the type of SIB (someone mentioned a heavy 4 stroke 15) the ultimate SIB engines are still the Tohatsu 9.8 or Mercury/Mariner or Yamaha 15. Both 2 stroke.

[philpot]

Having never had a Tohatsu, forgive my ignorance in this matter Max so are you saying the Tohatsu 9.8, which I know is held in very high regard, is as quick in performance as a 15hp and if so how/why. I am rather interested in this issue with the Tohatsu 9.8

Phil

[Biggy]

I think a lot of it is down to engine condition, trim set-up,prop an such.
My 4 stroke 15hp is about 18kg heavier than my 9hp 2stroke.
I'm expecting a small gain in go go, but not a massive difference.
The 15hp gives me a larger range of props to play with though, so once set up properly I should see a noticeable difference. (Hopefully) !!!

[Max...]

Originally Posted by philpot

Having never had a Tohatsu, forgive my ignorance in this matter Max so are you saying the Tohatsu 9.8, which I know is held in very high regard, is as quick in performance as a 15hp and if so how/why. I am rather interested in this issue with the Tohatsu 9.8

Phil

No! Obviously the 15 has 50% more power but these two 2 stroke engines are the optimum for SIB's. You trade power/speed for weight by going for one over the other but the way things work, despite the extra 50%, the 15 will only give you a knot or two on the top end but will give much more get up and go when loaded and much easier planing without having to faff around with people leaning over the bow etc.

Set up on any SIB is crucial but to be honest there is little to play with regarding prop etc with such a low powered engine.

As discussed in past topics the vast majority ran on the same trim hole and 99% use the standard factory prop as the best compromise. The main issue is engine height must be right - again see endless previous topics on this or check Locozodiacs numerous posts on the subject.

And use a tinytach (<£10 on eBay) to check you are getting 5250 to 5500 rpm at WOT.

[Fenlander]

>>>Hard floor (folding or sectional), regular HP floor or more rigid very tight deepish V (ie Aerotec) the top speed will not differ much.


Well yes... and no... Max.

True weight and speed achievable related to prop pitch are important factors but there is a fair difference between a flappy rubber bottom in contact with the water and a GRP hull with a flattish profile towards the transom.

For example this 185lb 3.2m GRP Bonwitco with an efficient flattish hull shape will make 16kts with a 6hp and 20kts with a 10hp.

http://www.bonwitco-boatbuilders.co....itco_320_a.jpg

I have to say when I saw the hull profile of the F-Rib it made me think back to our Bonwitco and how well it went for a given outboard size.

[Max...]

Well, I was not really thinking of the crappy flappy floor bottoms but more a well set up SIB. The floor on an Aerotec, Honwave, ply floor Suzumar etc should be drum tight in my experience. Even my slightly looser Zodiac Fastroller floor made little difference compared to the others I've listed.

But seriously - an 85KG Bonwitco + passengers will see 18.5 mph with a 6HP?!?!

If so that is incredible.

[philpot]

Ah okay, I thought perhaps I was missing something there and the 9.8 was a perfect engine to tune and therefore get more power to weight ratio.
I could not agree more regarding 2 stroke for sibs and I would not use anything else. 15hp 2 stroke is the very maximum I can handle on my own to move around on land.

I have however made a liar of myself and bought a 2.5 4 stroke Merc for some of my fresh water fishing but am not counting that in the equation.

Phil

[Fenlander]

>>>But seriously - an 85KG Bonwitco + passengers will see 18.5 mph with a 6HP?!?! If so that is incredible.

Yep indeed that flattish towards transom hull profile is so efficient.

[Ronaldj]

Max
I think you are missing the point.
We are not talking about a Sib
We are talking about a Rib
A Rib which the Fboats are .
Are far more efficient than any Sib is
Actually having a hard hull and a real V does matter.
More importantly the hard hull
A hard hull does not bleed energy the way a soft hull does

In fact the boats we refer to as Jon boats and Skiffs in North America will give the same type of performance on small powered outboards as they are hard hull boats designed for small outboards
The reason for gravitating to the Fboats Rib is the fact that we can finally own a hard bottom boat without the need for a trailer and have the increased performance

[ba_fisher]

330-RF WinBoat 330RF SPRINT | WinBoat USA

Test results conducted on March 2010 by Boats and Yachts Magazine with different payload.
Conditions:
Air temperature – 26 Fahrenheit (-2ºC)
Water temperature – 38 Fahrenheit (4ºC)
Wind – 2 knots (1-2 m/s)
Wave height – 0-4 inches (0.0-0.1 m)
Outboard motor – Mariner 5

Load (adults) Speed (mph) Speed (km/h)
1 17.8 28.6
2 15.2 24.5


360-RF: WinBoat 360RF SPRINT | WinBoat USA

Test results conducted on March 2010 by Boats and Yachts Magazine with different payload.
Conditions:
Air temperature – 26 Fahrenheit (-2ºC)
Water temperature – 38 Fahrenheit (4ºC)
Wind – 2 knots (1-2 m/s)
Wave height – 0-4 inches (0.0-0.1 m)
Outboard motor – Suzuki 15
Load (adults) Speed (mph) Speed (km/h)
1 28.6 43.2
2 23.9 38.4
3 22.5 36.2
4 21.6 34.7
5 19.3 31.1

[Biggy]

Pennine Marine now have the F Boat on their site, A good write up from a straight talking, no frills - Yorkshireman.
F-Rib - "Unique Folding Rib" - New for 2015 | www.penninemarine.com

[philpot]

Originally Posted by Biggy

Pennine Marine now have the F Boat on their site, A good write up from a straight talking, no frills - Yorkshireman.
F-Rib - "Unique Folding Rib" - New for 2015 | www.penninemarine.com

I may live in North Lincs but I still have yorkie blood running through my veins and like you Biggy, would expect nowt else from another yorkie but straight talking.

Phil

[Mickhitchuk]

Great review, perhaps I need to sort out a passport and translator and head up to Yorkshire,

[philpot]

You can call in here on route Mick to get your jabs before entering god's own country

Phil

[Biggy]

Originally Posted by philpot

You can call in here on route Mick to get your jabs before entering god's own country

Phil

You can tell he's an outsider...
Yorkshires a county, not a country lol..