Recent Posts

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General / Re: Decent hovercraft companies
« Last post by Nick Flint on Yesterday at 2:43 PM »
You could start a WANTED CRAFT thread to maybe tempt someone to sell? Put it in FOR SALE where sellers will be placing THEIR advert on here?
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General / Re: Decent hovercraft companies
« Last post by Al on Yesterday at 8:25 AM »
The British Hovercraft Company, or Norfolk Hovercraft. Richard Goosey "RGI" but I think he mainly deal in racing craft, but I could be wrong.


Your other option would be to build from scratch, Amphibious marine for the Sevtec range of plans, or ready to go craft, but importing a complete craft, new or second hand wouldn't be cheap
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General / Decent hovercraft companies
« Last post by philw on Jul 11, 2025, 8:18 am »
With Vortex gone, what other decent companies are out there, we have BBV, Griffon are there any others that may have secondhand craft for sale?
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General / Re: Plough in
« Last post by Al on Jul 08, 2025, 5:40 pm »
I've checked the skirt all over and no visible damage.  I've painted a layer of glue on the contact area of the skirt in the hope it will help protect the skirt against wear.



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General / Re: Plough in
« Last post by Al on Jul 07, 2025, 4:08 pm »
I've ordered a digital spring balance / luggage scales, as they'll probably be more accurate than my 100kg spring balance on such a low tension of 5 to 6lbs.  Un likely I'll be getting out on the hover until at least the end of next week, as working and have stuff already planned for a couple of days.  At least the scales will be here before then, so can double belt tensions are correct.
 
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General / Re: Plough in
« Last post by Steve Holland on Jul 07, 2025, 3:58 pm »
The original surveyor uses approximately 9.5hp for lift on a 9 blade fan at 25 degrees. Your belt should easily handle that. The most common reason for belts turning over is wear combined with an overtightened belt. I would stick to the manufacturer advised tension where possible.
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General / Re: Plough in
« Last post by Al on Jul 07, 2025, 8:27 am »
Becky said last time we were out, she could smell something.  Becky was sat further back than me. "It wasn't me that she could smell, honest" ;D  I thought we had the roof up the last time we went out, but Becky said the roof was definitely down the last time out.  My memory isn't what it used to be  :-[   So perhaps the lift belt was slipping a bit.


The yellow Surveyor I had, the lift fan used to eat belts within a few hours of use.  When building the original drive for Kermit, I spoke to Bryan Phillips about it & he suggested that I fit two belts to the lift fan, as recommended on the Geoduck.  This was why originally there were twin belts driving the lift fan.  From memory it was a nightmare to fit the four idler pulleys in such a tight space.  He tried to sell me the carbon drive system, but the cost was out of my budget, especially with P&P from the USA & import duties etc.


 
 
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General / Re: Plough in
« Last post by Ronnie L on Jul 06, 2025, 10:36 pm »
The Tensioner pulley bearings are new and there are spares ones in the spare parts box.
I wondered if there might be corrosion on the pulley to belt surfaces with the craft standing…..although it’s been inside all the time.
The lift belt isn’t very old, and as Al said there is a a new one cable tied in, so it’s easy to get to.
So that’s easy to change if needed.


When I bought the craft the propeller drive belt would slip quite often.
It was something you couldn’t miss the engine revs would rise when under power.
I changed the drive belt tensioner to jack bolts………solved. Never did it again.
I baffled by this
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General / Re: Plough in
« Last post by Steve Holland on Jul 06, 2025, 3:31 pm »
Your lift belt situation is something I was chatting to John about when he was designing the 'glass cockpit ' for my vanguard. John added an input from a hall sensor on the prop so that the speed can be monitored although you can use software linking engine speed to prop/fan speed to provide a warning which imo would be useful to have.
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General / Re: Plough in
« Last post by Al on Jul 06, 2025, 1:44 pm »

I've replaced the belt with the new one that was cable tied to the frame.  I've also ordered a new set of belts to keep onboard



I've just put spring balance scale about half way between the driven pulley & idler, at 5lbs pull the belt moves about 1/2"  looking in the plans written instructions , that should be about the correct tension.


Both idler pulleys are free and smooth running.


One difference between the first time out and the other two times, is that the first time I had the hood folded away and the last two I had the roof up, but I don't think that should make much difference


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