gonggongboy

I was wanting to build a Streamline EDF Airboat with a 3.5in 7 blade EDF, powered buy a feigao 12xl on 6s lipo.

First of all is that a safe setup?
What would the speed be like?
What size hull should i make?
Were do i get plans for an Airboat?

I have never built a boat (complety finished one i should say), but how hard is it to build a AirBoat hull.

There are just a few things i want to clear up before i decide to build one.

DJLaPalme

I hate to be the one to break the bad news to you, but, several have tried to build an EDF and as far as I know none of them have worked. Apparently the EDF can't overcome the drag to get up on a plane. Give it a shot. You could be the first. Maybe! Dennis

ISIRC10

For the same amount of money you spend on the ducted fan, you can get a prop setup with about twice the thrust... plus it won't be an amp hog and your run times will be longer.

pinky_d_brain

they work but differently from a air propped boat I'm working on one but taking forever. for their size they put out a lot more thrust then people think making most of the edf boats I have seen dive making them un able to plain off. if you plan to build one go with foam and keep it vary light, as well a hydro stile would work best or something without much drag. an edf don't have the low end thrust or acceleration compared to a prop they are geared more for top end speed so if you can get it going without much resistant's it will be faster than a propped boat of the same power plant. if this is your first boat I would not recommend it but if you have the equipment already why not =)

gonggongboy

I might put in a Predator Rigger and see how it does.

ISIRC10

I was just mentioning that it would be much cheaper to run a prop setup with the same amount of thrust... but have a go, if it doesn't work out as you anticipated, you will have a very cool looking boat at the very least!

If it works out, I might just have to make room for another airboat in the shelf!

DJLaPalme

When I said "maybe" on my earlier post, I was not questioning your build talents. I meant I don't know if anyone else has ever made one that works or not. Give it a go and let us know how it is going. Only way to accomplish something is to try. Dennis

ISIRC10

This is my "dream" setup, something that I would love to try out given the funds. I think your choice to put it in the predator outrigger is an interesting choice. (especially since that particular craft benefits from the lift created by the water-prop). I have built one and once it gets on plane, it needs very little thrust to stay up there. If you keep things light, you will have a very good chance of getting it up on plane... once again, this is all in theory!

My dream setup:
This fan:
www.hobbycity.com/hobbycity/store/uh_viewItem.asp
This motor:
http://www.hobbycity.com/hobbycity/s...idProduct=5158
This ESC:
www.hobbycity.com/hobbycity/store/uh_viewItem.asp
This battery:
www.hobbycity.com/hobbycity/store/uh_viewItem.asp

$272... without shipping... one can dream about it... one day.... (I don't know if I would have the balls to go WOTwith that setup though)
BTW, my estimate is that the power setup above hould push a medium-sized gasser hull to its limits.
so, gonggongboy, what are your plans? This is your thread, don't want to hijack it, just throwin' around some ideas.

Pond Skipper

rcbif

there's one on ebay. he said its never been on water but I bet it has and just dosent go anywhere

http://cgi.ebay.com/Ducted-Fan-Jet-A...item27b2e38826