Topic: mCP X blades
Made this to see how printed heli parts will handle real world usage.
I'll record the testing because the likely failure of the part will surely be entertaining.
1 2012-08-08 05:25:42 (edited by Kyle 2012-08-08 05:29:27)
- Kyle
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- Brad
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Re: mCP X blades
I'm really interested in how this turns out, and if its rigid enough for flight. I wonder if the blade pitch will turn out right as well.
3 2012-08-08 06:03:50 (edited by Kyle 2012-08-08 06:04:23)
- Kyle
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Re: mCP X blades
No matter how they turn out I'm exited.
If they fail it should be entertaining. If they do not, $0.16 is a pretty good price for replacement blades when compared to $9 at the hobby shop.
I go back to school on the 28th, I'll print a set then
Re: mCP X blades
I'm curious to see if 3D printed "ridges" affect the performance.
Former Solidoodle employee, no longer associated with the company.
Re: mCP X blades
I would think, (looking at the design)
you'll either need to print the blade thicker (so it touches the bed), (or add support) so that the tip has some support (that overhang will be impossible).
Either way there is going to be a lot of clean up task afterwards, by the time that's finished there probably will be no ridges.
- Kyle
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Re: mCP X blades
danny wrote:
I would think, (looking at the design)
you'll either need to print the blade thicker (so it touches the bed), (or add support) so that the tip has some support (that overhang will be impossible).Either way there is going to be a lot of clean up task afterwards, by the time that's finished there probably will be no ridges.
Support will be a must when printing these blades. I'll also look into as small a layer height as possible to get a nice smooth airfoil. Later, I may try some polishing techniques to further reduce the drag on the part.
Assuming they don't fall apart on the initial stress testing.
Re: mCP X blades
...Im no expert on anything, but shouldn't the blade be pitched upwards instead of just flat? it looks like its all a horizontal motion without any lift...
maybe the circle part could be tilted and the blade be flat...
or both printed flat but separate pieces that are glued to a pitch?
Like i said, I know nothing so don't be angry if I'm wrong..lol
- Brad
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Re: mCP X blades
I believe the bottom of the blade is flat and the top is what has a bit of a curve.
Re: mCP X blades
I dunno... both top and bottom look the same to me... maybe its just me then 
- Brad
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Re: mCP X blades
Rotate the model to view it from the end of the blade and you can see its curved at the top
- Kyle
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Re: mCP X blades
MeshMoth wrote:
...Im no expert on anything, but shouldn't the blade be pitched upwards instead of just flat? it looks like its all a horizontal motion without any lift...
maybe the circle part could be tilted and the blade be flat...
or both printed flat but separate pieces that are glued to a pitch?
Like i said, I know nothing so don't be angry if I'm wrong..lol
This particular helicopter is known as collective pitch.
Instead of the motor speeding up or down, the pitch of the blade changes.
It's also how I can fly upside down
12 2012-08-09 21:00:13 (edited by MeshMoth 2012-08-09 21:02:51)
Re: mCP X blades
Oh yeah definitely, I see that its curved on the top, but i'm saying that same curve is also mirrored on the bottom side.
And when I said that it was flat, i meant the blade was pointing in a horizontal pitch... maybe im just being confusing...
Maybe this stl will help me explain better... I did a crude edit of the blade and probably mucked it up that it can't be used to print, but it should show what I mean...
Edit:
Let me try again:
Re: mCP X blades
Kyle wrote:
MeshMoth wrote:...Im no expert on anything, but shouldn't the blade be pitched upwards instead of just flat? it looks like its all a horizontal motion without any lift...
maybe the circle part could be tilted and the blade be flat...
or both printed flat but separate pieces that are glued to a pitch?
Like i said, I know nothing so don't be angry if I'm wrong..lol
This particular helicopter is known as collective pitch.
Instead of the motor speeding up or down, the pitch of the blade changes.
It's also how I can fly upside down
OHHHHHHH!!!!!!!!!!.... lol sorry.
Re: mCP X blades
If you want to get the blade a little longer you might try printing it at an angle to the bed.
- wolfi
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Re: mCP X blades
Hi,
I remembered that I see something like this at http://www.thingiverse.com/thing:16356
and I'm sure you can find more. You should have a closer look and use the experience to improve yours.
I like your work and look forward to receive my printer.
Test ride with slef-printed blades:
Have a nice day
wolfi
I placed my order 08-18-2012, ID: 3676, it's hard to wait!
- Kyle
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Re: mCP X blades
I finally had a chance to print off a set of these blades.
Re: mCP X blades
Beautiful! What a great use of 3D printing. Perhaps someone will try an airplane ?
Former Solidoodle employee, no longer associated with the company.
- McMuFFin
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Re: mCP X blades
solidoodlesupport wrote:
Beautiful! What a great use of 3D printing. Perhaps someone will try an airplane ?
+1