ptern's blog View Details
Posted by ptern | Dec 21, 2019 @ 03:12 AM | 3,736 Views
There is no amount of dampening will get rid of the vib to the gyro.
You will need to eliminate all of the vibs in the first place, and it is good for the heli anyway.
High level of vibrations will cause high wear and tear on the bearings or moving parts.

On both of my DMD K130s ( and 2s K110s), the gyros do not have any foam at all, just a bit of packing tape to
stick and secure the k110 gyro to the frame and that is.

I am sharing my experience of eliminating vibs at the hardware level:

1. Main head component checking:
- Physical check the main head for vibs:
carefully inspect for 100% straight main shaft(if in doubt try a brand new main shaft)
next check the feathering shaft. Remove both main blades, use a fs screwdriver , rotate the fs while watching the the main grips.
They should be level and should not wobbling up/down while the fs is rotating. If they do wobble, the fs is bent and must be replaced
Check the 2 head damping rubber O rings, one for each grip, check if they are not worn out or broken.
These two O rings can cause head vibs if they are bad.

For the main blades, if in doubt, you'll need to check if they were balanced.

Check the main motor for any vibrations, Worn out bearing will cause vibs.
Check the main plastic gear for broken teeth etc....

- Checking vibs during power with main blades attached:
unplug the tail motor, set pitch to 0 deg from 0 to 100% throttle.
secure the heli to a platform or you can hold the heli in your hand during this test but...Continue Reading
Posted by ptern | Aug 28, 2019 @ 12:02 AM | 1,268 Views
I'll make an instruction of how to make customised push rods for your micro helis. There are many reasons why you would need such a customised push rods.
For me it was the customised head for my K130 helis which I use the Tarot450 tail assembly.
The reason I chose the Tarot tail assembly, the grips have builtin thrust bearings, hence totally eliminate the centrefugal loading on the grip's radial bearings.
Let me know if you are interest in this head from the Tarot 450 tail, I'll make some instructions.
Now... the instruction for making push rods.
Posted by ptern | Dec 10, 2018 @ 09:25 PM | 14,410 Views
I am starting this thread on how to rewind the K110 1s motor to make it run on 2S.
The preferred new wire size is 31AWG gauge or 0.226mm or 0.0089 inches wire diameter.
Posted by ptern | Jun 10, 2018 @ 05:20 AM | 14,384 Views
Here are the mentioned files. Since I have none of this ESC, I could not test them. Please test them at your own risks.