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Old 12-29-2016, 02:53 AM   #401
Atomic Skull
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I have a suggestion, how about a 3D printed tail hub? Instead of a solid hub it could be a teetering tail like the Goblin 380 uses. The hub block would have a hole in it that the shaft is pressed/glued into and there would be a common spindle and dampers like a main rotor head. Because the tail spindle floats on rubber dampers it reduces the strain on the tail. Most implementations of this style of tail also have some delta-3 to correct for dissymmetry of lift in the tail rotor which further reduces stress on the tail hub and bearings (SAB uses something like a 15 degree offset on the tail grip links). Note also that this type of tail requires link balls on the tail grips because the grips and spindle must be able to teeter slightly which isn't compatible with links that are restricted to being parallel with the tail grips and slider.

In addition to the performance improvement this type of tail allows for some bearing preload to be designed into the grips because the dampers can be compressed slightly which yields tight stop free tail grips.
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Old 01-09-2017, 10:08 PM   #402
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Anyone use 3dHubs for their parts? How much do the parts from ShapeWays cost?

Looks like about $100 in parts on 3dHubs.
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Old 01-31-2017, 04:00 PM   #403
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What else is new with this project?
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Old 03-10-2017, 08:13 PM   #404
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very cool little machine!!
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Old 04-03-2017, 03:17 PM   #405
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Hey guys,
is ABS or NYLON good plastic choices for this heli?
thanks.
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Old 04-04-2017, 02:18 PM   #406
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hey guys,
a few more questions, please (I hope this thread isn't dead):
-what kind of bearing should I use to join the two swash plate halves?
-I see that the main blade grips look different in some photos. Are you guys using blade grips from another brand?
-is someone printing the heli in abs or nylon?
thanks.
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Old 04-04-2017, 02:25 PM   #407
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Quote:
Originally Posted by hilarious View Post
hey guys,
a few more questions, please (I hope this thread isn't dead):
-what kind of bearing should I use to join the two swash plate halves?
-I see that the main blade grips look different in some photos. Are you guys using blade grips from another brand?
-is someone printing the heli in abs or nylon?
thanks.
Well, swash bearing is stated on website, 12x18x4mm

The Smooth, thick version of the grips is new and considerably stiffer than the old version with the support ridges on top and bottom. Just didn't redo the renders as it's quite tedious.

It's not recommended to print this heli out of filament, and afaik no one has ever tried it. I'd be concerned about blade grip ejection. The recommended process is to order at shapeways
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Old 04-05-2017, 12:44 PM   #408
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hello Jonas,
thanks a lot.
what does "M2 locknuts and M2x4/6/8/10/12/16/20 bolts" mean exactly? how many of each length?
thanks again.
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Old 05-14-2017, 07:22 PM   #409
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I started to work on this.

All parts are printed.

I am unable to source out the 8mm brass ball.. Does anyone have one they can send me ?
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Old 05-25-2017, 10:37 PM   #410
s0laris
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I cannot locate a ball for swash. can someone here make one and send me one ?

Happily pay for it.
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Old 05-26-2017, 02:52 AM   #411
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Quote:
Originally Posted by s0laris View Post
I cannot locate a ball for swash. can someone here make one and send me one ?

Happily pay for it.
Hi. The advise is to get 1x GE4E spherical ball bearing (pop out inner ball)
http://www.oblivion-heli.com/index.php/getting-started/

My experience that this bearing size is available with more then one inner ball size. So please order 1 or more from different suppliers.

To be honest, I bought a massive ball and drilled the hole.

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Old 05-26-2017, 08:58 AM   #412
s0laris
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Ya I did order one and the ball was 9.1 mm instead of 8.

what vendor had the 8mm version ?

I will look for more vendors in mean time
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