Exciting or what!!!!!!!!!!!
Really looking forward to this one!!
Earthwormjim's Stuff
Moderators: BeligerAnt, petec, administrator
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earthwormjim
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Re: Earthwormjim's Stuff
Next delivery from shapeways is due tomorrow!!!!!
Exciting or what!!!!!!!!!!!
Really looking forward to this one!!
Exciting or what!!!!!!!!!!!
Really looking forward to this one!!
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Remote-Controlled Dave
- Posts: 3716
- Joined: Sun Apr 03, 2005 5:30 pm
- Location: Antrim, Northern Ireland
- Contact:
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earthwormjim
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Re: Earthwormjim's Stuff
More antweight mayhem!!!!!!
I have been experimenting with a lower profile fan unit using a hollowed out 50mm fan blade from hobbyking, with a 20mm dia outrunner shoe horned into the centre. Seems to work well on 3s. Not as much power as a proper EDF motor, but seems to be plenty for antweight use.
I am in two minds whether to use this, or go back a step and re make Trouble, which I think I can design the flaws out of, and would be a simpler solution. We'll see!
Anyway, here is the "prototype"...
Here is the chassis fresh from shapeways...
With fan and painted...
And here is a youtoob link to it making some noise and stuff...
http://www.youtube.com/watch?v=W6FH8Cz4 ... TsU4Bo8-jg
The channels on either side of the fan opening are for 2 aluminium runner strips, but I havn't got round to making them yet!
I have been experimenting with a lower profile fan unit using a hollowed out 50mm fan blade from hobbyking, with a 20mm dia outrunner shoe horned into the centre. Seems to work well on 3s. Not as much power as a proper EDF motor, but seems to be plenty for antweight use.
I am in two minds whether to use this, or go back a step and re make Trouble, which I think I can design the flaws out of, and would be a simpler solution. We'll see!
Anyway, here is the "prototype"...
Here is the chassis fresh from shapeways...
With fan and painted...
And here is a youtoob link to it making some noise and stuff...
http://www.youtube.com/watch?v=W6FH8Cz4 ... TsU4Bo8-jg
The channels on either side of the fan opening are for 2 aluminium runner strips, but I havn't got round to making them yet!
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bitternboy
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Re: Earthwormjim's Stuff
Oh my... 
Does it self right?
Does it self right?
Jonathan Atkinson
Before you criticize another person, first walk a mile in their shoes. Then, when you critisize them, you'll be a mile away and have their shoes.
Before you criticize another person, first walk a mile in their shoes. Then, when you critisize them, you'll be a mile away and have their shoes.
Re: Earthwormjim's Stuff
I'm guessing the flaps will do that, they will help direct the air flow so they act like a flipper arm.
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Andrew_Hibberd
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Re: Earthwormjim's Stuff
Jim is your fan on upside down? How much force are you getting from that fan?
TEAM GEEK!
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Remote-Controlled Dave
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earthwormjim
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Re: Earthwormjim's Stuff
Very good.I like it!!Dave26 wrote:Fan of Bruce?
Still not sure whether to use it or not. Just thought the opening vents were cool!!!!
I dont think it will self right reliably. Where as Trouble will run inverted.
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earthwormjim
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Re: Earthwormjim's Stuff
Hey Andy.Andrew_Hibberd wrote:Jim is your fan on upside down? How much force are you getting from that fan?
Here is the fan...
http://www.hobbyking.co.uk/hobbyking/st ... eller.html
And here is the motor I have squeezed into it...
http://www.hobbyking.co.uk/hobbyking/st ... oduct=5380
I am running it with a 12A esc on 3s.
The fan is an unusual design, it is difficult to tell the orientation when it is in place, but a side profile pic shows the blade shape better...
I think the effectiveness of using EDF's in antweights so far is best measured not in the thrust of the fan, but in the suction created. IE the weight that a robot can lift. I havnt done that with this yet. It was more of an experiment to see if I could get a lower profile setup, as all the EDF units are tall and awkward to fit into an ant. This unit is 20mm tall. Still debating what to do with it.