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Blake - n/a
2-Feb-06, 11:37 AM
Has Anybody ever heard of a folding hovercraft or any real clever ways of compacting a hovercraft to trasport. i remeber seeing on the net an inflatable craft before. any comments???



Blake

team black - n/a
2-Feb-06, 12:26 PM
The Skima craft were collapseable and I think were intended to be carried by soldiers



http://www.hoverhire.co.uk/images/skima4-tn.jpg (www.hoverhire.co.uk/images/skima4-tn.jpg)

Sean Atterbury - n/a
2-Feb-06, 01:10 PM
i THINK THE ONE YOU THINKING OF IS THE HOVERY (sorry caps)



http://www.hovery.com/gallery.htm



there is also the one one of the members made and raced at Black ditch and Wittlesey I think.

Keith Oakley - n/a
2-Feb-06, 05:51 PM
Folding sidebodies were a common design feature in the 70s with the outer say 1.5 -2 feet of the hull folding upwards and inwards thus making storage and transport easier. It also enables you to have a wider craft thus reducing cushion pressure and easing the hump problem and/or increasing the lifting capacity - great for a cruiser. Usually a nylon 'piano hinge' ran the length of each sidebody in order to spread the load.

The technique is still used by some of the Griffon commercial craft but has gone out of fashion in the UK with the predominance of 'Simple Cyclone clones' whose integrated design uses the sidebody as an air feed duct. But it's still a very useful technique.

GavinParson - n/a
2-Feb-06, 10:17 PM
Owning a larger craft can be a problem when trying to find storage, especially if it's 7 or 8 ft wide. Folding sides might be a good idea for a coastal racer/cruiser that wouldn't completely fill your garage when not in use.

Sheer size is probably one thing that puts people off owning hovercraft and why compact jetskis are more popular.

I for one would like a folding craft as access to my place is limited.



Gavin

Don83000 - n/a
3-Feb-06, 12:57 AM
For a craft with folding sides look at the Canair 502 see

www.acvdesigns.com

Sean Atterbury - n/a
3-Feb-06, 05:56 AM
I'd love a set of plans for that craft of your, you build it yourself?



I remember you sent me some pics of some of your other craft a while back, I hope in the comming years to aldo build up as good a collection of working craft. For all my friends, then we can go on cruises and all that sort of things. http://hovercraft.org.uk/images/icons/smiley_icons/icon_razz.gif

Nick Long - n/a
3-Feb-06, 08:56 AM
Looks like it has a sensible number of rudders, too.



Nick

Don83000 - n/a
3-Feb-06, 10:39 AM
http://hovercraft.org.uk/images/icons/smiley_icons/icon_smile.gif Four rudders in all Nick and the left pair operate independant of the right pair so you can close the duct off for neutral and reverse and for turning one pair will allow forward thrust whilst the other pair give reverse thrust so you can come up on hover and stay in one spot doing doughnuts.

Blake - n/a
3-Feb-06, 10:48 AM
excellent replies people, im just thinking of creating a must smaller more compact craft, would it be possible to use ......say a material duct?!?

Don83000 - n/a
3-Feb-06, 11:36 AM
http://hovercraft.org.uk/images/icons/smiley_icons/icon_eek.gif Not practical as no protection from a fan loosing a blade etc or from a person falling on it as the duct is as much a protection device as it is a device for containing and directing airflow you could however use a prop with a lightweight ally cage which would be more compact like they use on paragliders.

Nick Long - n/a
3-Feb-06, 11:55 AM
Hi Don,



Four rudders, and made of aluminium too. That's what I have on my racer. I honestly don't know how those people with less get by.



As for guarding fans and props, you are right there are two issues, keeping people out and containing failed parts, apart from the boring aerodynamic details.



There are Club regulations on construction of ducts and guards. These have just been updated, expect a new release of the documents very soon.



Nick

Anne Scrimshaw - n/a
5-Feb-06, 04:58 PM
My Dad made one years ago – before I was born. It would fold up and fit in a Cortina estate boot. The duct wasn’t a problem, because in those days we had <font size="1">teeny tiny[/COLOR] ducts.

I think it had a framework inside, sort of lots of x’s which folding up in both directions. A bit like those camping chairs you can get now. With a material cover.

I think this was the hovercraft which someone has a photo of it floating in the water at Standford and Dad was handing a car battery over to someone on the shore. The battery was important because it was one off the Cortina, and we wouldn’t have been able to get home without it.

Keith Oakley - n/a
6-Feb-06, 08:46 PM
I remember it well - a brilliant machine around 16feet long with 2 9bhp villiers 9e invalid car engines. Built on the Zeppelin principle of a thin framework of metal rods covered in fabric it resembled an airship floating over the water. So light and yet large in cushion area it had the lowest cushion pressure ever seen so hump speed was non existent but it did tend to drift downwind... I seem to recollect another drawback is that it had no inherent hull to alight on water, so if Malcolm forgot to put in the 1 gall oil cans that were it's floats, it sank... But fortunately the day it did that it was close to shore and we dragged it out.

Keith Oakley - n/a
21-Feb-06, 12:44 PM
Just found this photo from 1970

index.php?t=getfile&id=70&private=0

Michel - n/a
1-Mar-06, 07:08 AM
Guy Ackerman has made one folding hovercraft too, able to be carried by road .

I' ll join a pic in a while.

Michel - n/a
23-Mar-06, 07:05 AM
I join a pic of the Ackerman "Orenoque" type hovercraft, specially designed to be carried by road on a standard trailer, folded width less than 2, 5 meters. index.php?t=getfile&id=149&private=0

Sean Atterbury - n/a
23-Mar-06, 01:07 PM
A bit dull wouldent you say http://hovercraft.org.uk/images/icons/smiley_icons/icon_cry.gif



But if it works, who cares. http://hovercraft.org.uk/images/icons/smiley_icons/icon_biggrin.gif

Michel - n/a
23-Mar-06, 09:22 PM
Not dull, but sad,

Guy Ackerman died after building this last hovercraft, and his sons are not fortunate enough to keep it running.

Sean Atterbury - n/a
24-Mar-06, 04:18 AM
Sorry to hear that http://hovercraft.org.uk/images/icons/smiley_icons/icon_sad.gif