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michael30.06 - n/a
26-Feb-08, 06:36 AM
http://hovercraft.org.uk/images/icons/smiley_icons/icon_cool.gif I've decided I NEED a UH18sp now so that I can have the Wing version later on. My use will be open water for fishing with the hope of reaching out to far flung spots in the future with the wing option? Who has a UH18 and what open water conditions have you used it in. Including stopping engine off then restart and over the hump? I tried to email John who has a great how to build diary on his site but could not get the message to go through. Very glad to hear all opinions, even the ones which will burst my bubble. I understand that the SevTec should be a better performer in open water but the WING has me hooked on the UH18. http://hovercraft.org.uk/images/icons/smiley_icons/icon_twisted.gif

jar2 - n/a
26-Feb-08, 09:27 AM
Hi Michael,



Don't know why email didn't work - my address is john at hovercruiser dot org dot uk if you want to try again?



The UH18 performs pretty well on roughish water - up to about 18" or so it will cruise along fine. Getting back over hump in waters above 12" or so is difficult - ut;s hard to gain enough speed without swamping the low mounted front lift fan - with potentially disastrous consequences (fans don't like eating big lumps of water http://hovercraft.org.uk/images/icons/smiley_icons/icon_sad.gif ). On the plus side the craft is very fast and, if driven moderately is surprisingly economical (I get around 30mpg cruising at 30-35mph).



I haven't built the wings just yet but, after talking to others who have, I'm not sure how practical they are (although they are seriously COOL http://hovercraft.org.uk/images/icons/smiley_icons/icon_cool.gif ). The craft performance drops considerably (speed reduces and fuel consumption increases) and you can't land/takeoff on anything other than smooth water because of the risk of the wing leading edge clipping waves.

michael30.06 - n/a
26-Feb-08, 09:47 AM
http://hovercraft.org.uk/images/icons/smiley_icons/icon_evil.gif The limitations are better than I had expected, and you are right the wings are almost too cool to resist. http://hovercraft.org.uk/images/icons/smiley_icons/icon_twisted.gif

tonybroad - n/a
26-Feb-08, 10:22 AM
7" off the ground is quite high enough for me, if we were meant to fly we'd have wings, but then if we were meant to hover we'd have lift engines so that argument doesn't stack up, what am i on about...



good luck whatever you decide to do



Tony

sixpackpert - n/a
26-Feb-08, 10:42 AM
if we were meant to hover we'd have lift engines so that argument doesn't stack up






Some of us do after a good curry http://hovercraft.org.uk/images/icons/smiley_icons/icon_eek.gif



http://i41.photobucket.com/albums/e253/sixpackpert/getmecoat.gif

jon_curtis - n/a
26-Feb-08, 08:04 PM
i would consider the wing really rather dangerous, but thats your call, it does look cool, but scary also!

from seeing a vid of one flying there does not apear to be any roll control of the wing in flight, turning will pitch the wing down on one side and its possible to clip the water and thats it! a far more sensible approach and practical (in the sense you can fly off into the sunset) is to put a very large ram air parachute on a hovercraft http://hovercraft.org.uk/images/icons/smiley_icons/icon_smile.gif

jar2 - n/a
26-Feb-08, 09:33 PM
...there does not apear to be any roll control of the wing in flight, turning will pitch the wing down on one side and its possible to clip the water and thats it!




The trailing wing tips have little water-skis fitted - the wing tip just skips along the water surface when thee craft rolls. If you watch some of the UH videos you can see them deliberately doing this to get the craft to turn quicker.



It's probably safer than it looks - you have a nice soft air cushion under you if you come down a bit too hard http://hovercraft.org.uk/images/icons/smiley_icons/icon_eek.gif