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Old 29 September 2012, 08:22   #1
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Country: UK - England
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Make: Quicksilver + Gemini
Length: 4m +
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excel XHD535

Hi looking to buy a new boat anyone got feed back on the excel XHD 535
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Old 02 October 2012, 15:50   #2
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Hi Dodge

No problem with the brand but there are a few things to consider for such a large inflatable:

The boat weighs in at 145kgs, so won't be very portable if you are not keeping it inflated on a trailer.

It would need a 3-cyl engine to move it along at full potential, so expect a minimum of about 75kgs for that.

Although its a big boat for its type, the hull is still relatively flat, without much of a vee at entry or at the transom, so it will not dig in as well as a deep vee on the turns.

Although listed as an XHD with huge tubes, tube material is still pretty standard at 1100D. In my opinion, it is really just a big version of something like the Quicksilver HD, with more reinforcement in the transom.

With all this said, it has the carrying capacity of a 6m RIB, so if that's important to you, I can understand your interest!
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Old 02 October 2012, 16:25   #3
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Thanks for this. I have a Quicksilver which I used this summer, This is lighter than the Gemini but must say the despite its age the Gemini performs a lot better when loaded up. I have in my mind to sell them both and buy something newer but still not a 100%.
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Old 02 October 2012, 16:37   #4
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Boat name: Nautile
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Engine: Tohatsu 18 /30 HP
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Dodge, why would you need a sib so large for ? The fabric material is prety standard for that large size, a heavy duty thicker fabric would have been more proper to have. Your actual 30 HP will move it reasonable well although not heavily loaded to it's full capacity.

Hope that large sib doesn't have standard alum floors and small size side joiners to handle well a 50 HP engine and not wrecking the alum panel floors, among other tech virtues as advertised on their web page.

Redrock, seing your avatar you have a XPRO 530, is that a rib comercialized by Defender USA and having a 3D Tender sticker at tube's rear sides ? If so, how does it handle ?

Happy Boating
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Old 02 October 2012, 16:38   #5
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At 535 not many boats are portable without a trailer, unless you have a big van and a couple of friends.

Not sure why the number of cylinders has any bearing, the HP will do though. A 40 hp engine (max for this boat) 2 or 3 cylinders it will still be 40hp.

Stating it will have the same carry capacity as a 6m is silly, which 6m? if this 535 has exceptional carry capacity then so will some 6m.

You cant beat physics, a 6m boat has more length and width more air in bigger tubes, and will be able to take a lager engine, so will run better loaded.

Logic wins every time.
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Old 02 October 2012, 16:48   #6
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Hi Dodge

Is your Gemini a GRP or inflatable hull? If inflatable, does it have an airfloor rather than aluminium? If so, this could explain the better handling under load as the floor itself gives extra buoyancy, whereas aluminium floored SIB's with flatter vee's tend to rely more on the tubes for buoyancy.
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Old 02 October 2012, 17:18   #7
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Help the guy out by giving valid uncluttered information.

I have a 3cyl on my boat, 90hp, that OK for this boat? OFC not .
HP over cyl is a much better guide, (look at what ALL manufactures state, HP and or weight not no of cyls).

I have not mentioned brand, just its length, length to get comparison.

If you want comparison ,the zodiac F530 has a stated load carry capacity of 1560kg, less i know, but it can use up to 80hp, which will give much better load carrying performance when loaded.

The FUTURA MARK III (4.5M) carries up to 1280kg with up to 60hp, again comparable length/capacity.

Clear Info, and logically backed up with comparisons is the way to go.

See Redrock edited his post this was a reply to.
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Old 02 October 2012, 19:05   #8
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Quote:
Originally Posted by Redrock View Post
Is your Gemini a GRP or inflatable hull? If inflatable, does it have an airfloor rather than aluminium? If so, this could explain the better handling under load as the floor itself gives extra buoyancy, whereas aluminium floored SIB's with flatter vee's tend to rely more on the tubes for buoyancy.
The floor provides no buoyancy whatsoever unless it sits in the water. That's like saying that taking a bunch of extra lifejackets allows for a heavier load, as their flotation adds to the boats capabilities. The boat's buoyancy is detemined by the displacement of the wetted parts, i.e. tubes, floor and transom.

An air floor may weigh less than a wood or aluminum floor, and increase the reserve buoyancy by that amount, but it adds no buoyancy.

jky
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Old 02 October 2012, 20:57   #9
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Glad you added "unless it sits in the water." to the bit about the floor not providing buoyancy. That's exactly what I am talking about.

For example, I have owned a Honwave Air floor with a fixed, inflatable floor/hull that sits firmly in the water. I also owned a Suzumar Alu floor that had a separate hull that only inflated at the bow.

The Honwave's floor had quite a deep vee and its entire length was in contact with the water, providing quite a lot of the boats displacement and buoyancy. The Suzuki's hull flattened towards the transom, without much water contact, so the tubes provided more displacement.

I must add that your analogy about lifejackets didn't reflect what I was saying at all.
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Old 03 October 2012, 03:13   #10
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i have owned a honwave too, i would not say it had a deep vee, it has a very shallow vee at the stern and some vee (more than some inflatables but less than others) in the bow.

from your logic, on an air floor version, the floor is more important than the tubes as the amount of tube in the water is ,minimal as the floor will be doing most of the supporting?

Deep Vee
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