School me on EDF

[FighterCat57]

Heh, I found the bestest dealest evar!

It's Bruchless! Yes Bruchless!

http://cgi.ebay.com/64mm-RC-EDF-4500...ht_5677wt_1137

Think it will be enough thrust?

If not there's this one:

http://cgi.ebay.com/89mm-RC-EDF-3600...ht_5134wt_1137

I was considering one of these two:

http://www.hobbycity.com/hobbyking/store/uh_viewItem.asp?idProduct=11165&Product_Name=HK_EDF70_Brushless_Power_System_2800kv_&_45A_ESC

http://www.hobbycity.com/hobbyking/store/uh_viewItem.asp?idProduct=11166&Product_Name=HK_EDF64_Brushless_Power_System_3500kv_&_45A_ESC

Anyone have a recommendation for an ESC/Fan/Motor setup?

Planning to pick up some fiberglass sheets and get this thing started!

[FighterCat57]

1200grams of thrust. I think that will move a boogie board!

[questtek]

You might find this dual ducted fan boat with no rudder of interest to your project. I posted this years ago but still have the boat. It would be an easy concept to use in your application.

http://www.rcgroups.com/forums/showthread.php?t=580340

[FighterCat57]

The rudderless, dual fan setup is very cool. I think they make a box that goes between the receiver and the ESC's for just this sort of thing, like a signal matrix to mix throttle and steering signals. Can't recall their exact description, but do recall reading about it.

Thanks for the link!

[FighterCat57]

The rudderless, dual fan setup is very cool. I think they make a box that goes between the receiver and the ESC's for just this sort of thing, like a signal matrix to mix throttle and steering signals. Can't recall their exact description, but do recall reading about it.

Thanks for the link!

[launchpad]

rescue boat 1.jpgrescue boat 2.jpg
I hope I did this right;I attached a couple of pics of a cool rescue boat.The boat is a traxxas villian ex.But I do like the fan ducted idea also.Just starting to build my Genesis and it will be twin.Almost everthing I need is here now minus the battery tray.

[785boats]

Ben
Whichever fan you decide to use, make sure the ESC is capable of handling about 3 times the max amps in the specs of the unit. Because the EDF isn't moving through the air at high speed (like in a plane) the fan can't spin up to its full revs & the motor is always overloaded. The EDF's on my were rated to 23A & I had 50A reversing ESC's with them & they got pretty hot & one of them finally burnt out. Mind you there was no water cooling on them & they were under the canopy with no moving air over them.
Here's the Boogie board on a bit of a speed run. It has two fans with forward & reverse ESC's using "tank steering" on a 4 channel set.

http://www.youtube.com/watch?v=0o0JRuxilY0&feature=related

Paul.