Wow I see you managed to get this set. Congratz!
Makes me feel like opening up my set... my wifey thinks Technic sets look 'naked' and cannot be displayed in our house.
I find building Technic sets hurt my fingers a lot. Some more very hard to clean and disassemble to store away. Any tips to share?
Good to have a Technic expert among us. Keep up the good work, sharing and "poisoning" us....
Ok, updated my blog. No MOC / modifications lately. Still waiting for parts.
Other stuff not reach KL yet
Lego 9398 - Motorized Rescue HelicopterNothing new in this, as per building instruction. The length and width is bigger than Unimog & Crawler, mainly due to the main-rotor. Height wise, lower. I did not put on any stickers ... yet.

I don't know about others, but my winch is very tight. Due to the grey-pin bush with friction below. The motor can't turn this, so I replaced with a 5.5 axle with stop. BTW, I use my own longer string. However, when I disengage the gear for winch, it is free fall when something is on the hook.
I may need to sacrifice some spare bush-pin and sand-down some of the friction on the pin. Or research more for other solutions.
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I do not have the power-function motor set (8293), so I take the parts from other vehicles to try here:
- M-motor
- Battery box
- IR receiver
- Remote control
- 8-tooth gear
- 24 tooth gear with clutch (white)
All works fine, after the above fix for the winch. Here is the video with the winch, rear-cargo door, landing-wheels and rotor.
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Something I note (before I do further research on internet), when the rotor rotates, it has momentum and when I stop the motor, the rotor will continue for a while. This can mean disaster for the gears, as the rotor forces the gear to rotate the motor. Hence, a smart design here for the safety mechanism, there is a gear on L-beam which can roll up to prevent gears grinding.
Also, this means the motor can only rotate the rotors in one single-direction. If switch the other direction, the gears will rotate freely. Which is what a helicopter rotor should be, rotate in one direction for lift. Below is the video of how it works.
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All in all, the helicopter is quite complete. There is a stick to adjust the rotor pitch.
One thing missing though, is the tilt (front and back) for the chopper to move forward/backward, in real life.
