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My frame weights 10,8 grams, so it's only about 3,7 grams heavier then the original one. In my opinion it's worth it because You get much more stiff frame which means better handling in the air. It's a lot easier to fly. Another benefit is that it's modular. You don't have to move all the parts to new frame when You break prop guard. You just have to print new prop guard and install it without touching PCB and motors.

This frame is 68 mm so it's also smaller than original frame. Expect that You will have to precisely organize Your wires etc. in order to make everything work fine.

I have changed original props for these props:

• http://bit.ly/2O1RBe6 - One such propeller weighs 0.43 grams. One original prop weights 0.92 grams. This means that You save almost 2 grams just by changing props. These are also much cheaper than original ones. With these props this drone flies so much better! It reacts a lot faster, flies faster and handling in the air is even better!

If You want to buy Mobula7 You can do it here: http://bit.ly/DronMobula7

Print every frame part using PETG except for battery holder. Battery holder should be printed with flexible material and then glued to the frame. Use some sand paper with frame to achieve better adhesion. The batteries should be at an angle of 90 degrees to the front of the vehicle. As a result, they will not come out when You will hit something with the front of the vehicle.

You need to have Your 3D printer well calibrated in order to achieve good results. Print it with 0.4 diameter nozzle and extrusion width.

Video: coming soon.

If You have problems printing this model, these links may help You:

• I3 Mega ULTIMATE upgrade guide - There is a lot of knowledge which may help You get the best 3D printing results. You will find it here: http://bit.ly/2OVbu5Z
• If You don't know how to calibrate Your Flowrate check this guide: http://bit.ly/2V2uXEF