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Shaprap View Drop Down
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  Quote Shaprap Quote  Post ReplyReply Direct Link To This Post Topic: Hovercraft
    Posted: 05/Mar/2010 at 2:15am

I'm converting a large toy hovercraft into brushless.

going to put three motors on it, one for the lift and two for driving it. Both motors are placed on the rear and need to work fwd and reverse separately, spinning a prop.
 
I need two lightweight ESCs that won't require water cooling, for driving on dry surface as well.
 
The car's ESC seem too heavy, any other ideas?
 


Edited by Shaprap - 05/Mar/2010 at 2:16am
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  Quote Blind Vision Quote  Post ReplyReply Direct Link To This Post Posted: 24/Mar/2010 at 7:30am
what, ? -i  would geuss the only ESC that has 2 directions of rotation would be those for cars.

BUT if the motors are separated as on the picture (one at each corner), you should be able to control it any way useing (one directional) normal ESC's. -THAT is, if you intend to use a Normal TX (not the toy one).

How does the toy look, -post a picture.

and let us in on the way you want to control it, and with what ?
I might be back agian - like it or hate it
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  Quote BrazFly Quote  Post ReplyReply Direct Link To This Post Posted: 24/Mar/2010 at 7:37am

As you nees FW and RW, think that only those for cars...

 
Life is simple, eat, sleep, and FLY!
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  Quote BrazFly Quote  Post ReplyReply Direct Link To This Post Posted: 24/Mar/2010 at 7:37am
Oh,
 
Please post some pictures from this machine!!
Life is simple, eat, sleep, and FLY!
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  Quote maxx78 Quote  Post ReplyReply Direct Link To This Post Posted: 24/Mar/2010 at 5:58pm
Take a look at this ESC's:
 
 
i use a lot of them for some boats. You can programm a lot of parameters.
 
Best regards Max
 
Pictures would be nice...
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  Quote Shaprap Quote  Post ReplyReply Direct Link To This Post Posted: 31/Mar/2010 at 9:28pm
Dont have any pics but here's a video of the hovercraft, all stock:
The text is in hebrew:  "HoverJet hovercraft by Pilotage"
"About 5 minutes of hovering with the stock battery: 750mAh NiCd 9.6V"
 
as you can see - it's big and slow, and the battery is a joke. I tries packing 8x 2900mAh AA and it hovered for a longer time, but was slower cuz the pack was heavier.
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  Quote Blind Vision Quote  Post ReplyReply Direct Link To This Post Posted: 02/Apr/2010 at 9:06pm
OK, now i see why you want to UPGRADE or modify this hovercraft.

my modification would be RUDDERs on the Thrusters, and Brushsless moters for everything.
as for the Reverse funktion, -ITS not needed when you got RUDDERS.

Rudders can be made to operate from one servo only, -linked together by a carbon rod (or something like that)

Rember the lifting units (ESC), should be operating at almost full throttle (or else you just burn power in the ESC (going to waste) - get the right motor for the job (KV).

-as for the Motors for thrust, only the sky is the limit Wink -could be very fun at about 50+ kmh.
I might be back agian - like it or hate it
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  Quote Beladog Quote  Post ReplyReply Direct Link To This Post Posted: 04/May/2010 at 3:39pm
I am in the process of stocking up for a very large scale scratch built hovercraft. It will use two 30mm 1100kv bl out-runners for lift(APC10x6) and one 40mm out-runner for propulsion(APC11x10). It will use Thrust vector and rudder for steer control. This model is estimated to weigh close to 15lbs (6.8kg)! Testing shows it will have an 8" ride height at 1/2 throttle and will clear 12" briefly at full throttle.
Blind vision is correct! For steer control rudders like the full size ones work best. You will be able to turn much faster, and the machine will be easier to control and will track much better this way.
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  Quote Packocrayons Quote  Post ReplyReply Direct Link To This Post Posted: 01/Oct/2012 at 3:36am
You can't ride 8" off the ground, it will be far too unstable.
Mine is a little touchy at about 1", although it has a wall skirt (tire tube) instead of a filled skirt.
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