Author Topic: Inspire Clone with mods - buid diary  (Read 659 times)

Offline Raven

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Inspire Clone with mods - buid diary
« on: June 26, 2018, 05:29:11 PM »
Hello everyone...
First I'd like to thank the initial creator of the files, and all of you guys that helped to create this cool drone and provide an enjoyable hobby project.

Through this build diary I'd like to share some modes and improvements I made to the inspire clone.

First, I focused on removing the excess play from the arm structure.
The excess play is caused by:
- flexy coupler which stretches holding the weight of the central part. Additionally, the weight of the center part is held by servo which could be the reason the servo burns out.
- excess play around the T8 screw/brass nut.

To address the first point, I decided to fix the T8 screw to the frame of the inspire drone, giving it a firm and stable grip, and removing the excess stretch from the servo.

I found one of these "horizontal mounting ball bearing" on ebay:

https://www.ebay.com/itm/T8-Lead-Screw-Support-Set-Mounted-Ball-Self-aligning-Bearing-Pillow-Block-8mm/332340133858?hash=item4d6103ffe2%3Am%3AmDo45014lufwtXOGUwc8e0Q&var=541341290985

They have two little screws that can be used to hold on to the T8 screw.
First I removed the ball bearing from the case (you can do so by just rotating the bearing in the case vertical by 90 degrees, and it will slide out of the case trough the bottom).
Once removed the bearing is approximately the same size as the bearings originally intended for the inspire.
You can slide them in (if they do not fit easily, heat them a bit to melt the excess plastic in the frame), and use some screws to additionally fix the bearing to the frame. The result is shown in the pictures.

Two of the roller bearing are used, one on the "center_bottom_battery_plate" and the other one on the "center bottom battery plate". They are also placed on the opposite sides of the frame, to compensate for the opposing forces that pull on the main T8 screw.

Some modifications to the parts were made.

center_bottom_battery_plate was modified, the place, cap, for the roller bearing was removed from the top and moved to the bottom of the part. It is in a separate file (center bottom battery plate_cap) to allow a smooth printing. It can be additionally glued and screwed to the bottom of the center_bottom_battery_plate afterwars (little acetone if using ABS can help).
This design also gives more height to the drone, the legs can be lowered a bit more.

Some pictures and .stl files follow...

Offline Raven

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Re: Inspire Clone with mods - buid diary
« Reply #1 on: June 26, 2018, 05:29:53 PM »
And the .stl-s....

Offline Bioethical

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Re: Inspire Clone with mods - buid diary
« Reply #2 on: September 18, 2018, 05:25:24 AM »
Raven,
I am sorry for the delay in express my comment.  Your generous contributions are greatly appreciated for this community. Thank you very much.