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Old 25 July 2008, 08:38   #11
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Country: Canada
Town: British Columbia
Make: Gemini
Length: 4m +
Engine: 40hp 2 str
Join Date: Oct 2003
Posts: 2,151
Quote:
Originally Posted by dverstege View Post
It’s been ten years ago that I brought down a moose. I still miss the hunt, I’ve got 8 moose and 1 caribou to my record and a lot of good eating. It’s good to know that your sib can hold up to heavy loads and still move that fast. Don’t forget to let us know your max speed when you get things in tip-top shape.
Wow, you've done very well. It sounds like you are originally from somewhere other than the GTA. Caribou is my favorite type of venision, but I've only had some on a few occasions.

Easyrider, sorry about the hijack (then again the thread is about boats with hijackers ). Can you post some pictures of your surfcat?
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Old 25 July 2008, 21:55   #12
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Country: Canada
Town: Newmarket
Boat name: ELA
Make: METZELER
Length: 4m +
Engine: 20 Suzuki
Join Date: Sep 2007
Posts: 157
Newfoundland

Great place to live and hunt if you can find a job that pays the bills.
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Old 26 July 2008, 02:11   #13
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Country: UK - England
Town: Sussex
Make: Ceasar Surfcat
Length: 4m +
Engine: Tohatsu 50hp
Join Date: May 2006
Posts: 105
I havnt got any pictures yet, i'll post some up when i get around to it.
I took it out by myself the other day, and she REALLY flies and was suprisingly stable with just one person in it- i would guess i was reaching 45/50 knots, but i wouldnt want to be doing this speed into a headwind by myself though.
It also pulls a 3 man ringo with ease which was a nice suprise considering that im using a semi cleaver prop.
The power to weight ratio is brilliant- i think it works out to be somwhere in the region of 350hp per tonne!!!!
Only used about 20L of fuel in about 6 hours of boating as i wasnt going full speed everywhere because theres really no need too as shes still really quick without thrashing her
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Old 26 July 2008, 15:24   #14
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Country: Germany
Town: Germany/Texas
Boat name: wicked weasel
Make: 3.6m Metzeler Maya S
Length: 3m +
Engine: 6hp
Join Date: Jul 2008
Posts: 50
A couple of questions from a new guy.

1. What is the difference between a Ceasar Surfcat, and a Zodiac or Avon with speed tubes mounted?

I just looked at a older Avon w/Speed Tubes mounted and I can't see a great difference.

2. Is it possible to add speed tubes to any Hypalon boat?
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Old 26 July 2008, 17:43   #15
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Country: UK - England
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Make: Ceasar Surfcat
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Engine: Tohatsu 50hp
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Quote:
Originally Posted by SnappingTurtle View Post
A couple of questions from a new guy.

1. What is the difference between a Ceasar Surfcat, and a Zodiac or Avon with speed tubes mounted?

I just looked at a older Avon w/Speed Tubes mounted and I can't see a great difference.

2. Is it possible to add speed tubes to any Hypalon boat?
The difference is that the sibs with speed tubes still have a centeral keel/hull-this is the part that causes the slamming in a chop.The Surfcat hull is a catermaran hull with a deep but thin sponson/hijacker either side of a flat deck-the best way to see the profile is to google an image search for "thundercat boat" or "zapcat" as these have exactly the same setup(slightly different profile though).
I should imagine that it is possible to add speed tubes, which will make it more stable at speed, but you will still get the pounding when out in a slight chop due the hull profile.
Hope this makes sence.
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Old 26 July 2008, 17:53   #16
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Country: UK - England
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Forgot to add that the cat hull compresses the air beneath it which helps further with the ride characteristics.
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Old 27 July 2008, 06:04   #17
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Country: Germany
Town: Germany/Texas
Boat name: wicked weasel
Make: 3.6m Metzeler Maya S
Length: 3m +
Engine: 6hp
Join Date: Jul 2008
Posts: 50
Quote:
Originally Posted by Easyrider View Post
The difference is that the sibs with speed tubes still have a centeral keel/hull-this is the part that causes the slamming in a chop.The Surfcat hull is a catermaran hull with a deep but thin sponson/hijacker either side of a flat deck-the best way to see the profile is to google an image search for "thundercat boat" or "zapcat" as these have exactly the same setup(slightly different profile though).
I should imagine that it is possible to add speed tubes, which will make it more stable at speed, but you will still get the pounding when out in a slight chop due the hull profile.
Hope this makes sence.
I have been looking at the Cats for a couple of years now, but have yet to see one in person other than one I saw go past on the Main river at about 45/50MPH one day, by the time I got in the boat, he was long gone. A friend who spoke with him later told me he was a South African, here on vacation, and I never saw it again. I think I would enjoy one, but they are pricey.

I saw the Avon with the Speed Tubes last week, and to tell you the truth I really didn't consider the influence of the inflatable keel. I would think it would have a affect on the tunnel effect by reducing the lift.

Would Speed Tubes mounted on a flat bottom SIB with a aluminum, air floor, or wood floor, without the inflatable keel, achieve the same overall lifting affects as a “Ceasar surfcat”?
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Old 27 July 2008, 07:15   #18
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Country: Canada
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Make: METZELER
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Join Date: Sep 2007
Posts: 157
Modified vs true Cat

Just a guess but speed tubes like the Zodiac are very small according to the pics, but the Gemini’s and the true Cats actually have large pontoons that keep most of the hull “floor” out of the water. I would say that the Gemini and zap-cats would be a lot faster but what would the advantages be in Zodiacs eyes to do it there way?
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Old 28 July 2008, 00:16   #19
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Country: Canada
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Engine: 40hp 2 str
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Quote:
Originally Posted by Easyrider View Post
The difference is that the sibs with speed tubes still have a centeral keel/hull-this is the part that causes the slamming in a chop.The Surfcat hull is a catermaran hull with a deep but thin sponson/hijacker either side of a flat deck-the best way to see the profile is to google an image search for "thundercat boat" or "zapcat" as these have exactly the same setup(slightly different profile though).
I should imagine that it is possible to add speed tubes, which will make it more stable at speed, but you will still get the pounding when out in a slight chop due the hull profile.
Hope this makes sence.




Forgot to add that the cat hull compresses the air beneath it which helps further with the ride characteristics.

That is an excellent explanation.
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Old 28 July 2008, 00:31   #20
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Quote:
Originally Posted by dverstege View Post
Just a guess but speed tubes like the Zodiac are very small according to the pics, but the Gemini’s and the true Cats actually have large pontoons that keep most of the hull “floor” out of the water. I would say that the Gemini and zap-cats would be a lot faster but what would the advantages be in Zodiacs eyes to do it there way?

The futura design might get a boat onto plane a bit sooner since the center keel raises the height of the boat in the water while at rest. Regardless, the cat hulls get onto plane so easily that they won't have any real world disadvantage because of this. By the way Dan, NL is the only Canadian province I haven't been to yet, hopefully one day I'll have the opportunity to tour it.

I went out today and went through about 60 liters of fuel over a 177 km round trip. The first 60 km or so was going into some very choppy waves - no other boats were out in the water (from a quite busy harbour) at that time. There is a write up titled "SIB Daytrip" in the Rib Gallery section. Link here:

SIB Daytrip - Gimli - Gull Harbour round trip
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