ORIGINAL: scubyfan
Howdy,
I'm sorry, but I do not understand your question. I will not be making the gearbox, if that's what you're asking, so any technical questions regarding that I will not be able to answer.
What was it that you wanted to know?
Scubyfan,
I think what F1992 is asking is, what are you going to use for props after you get the gear box? I have to agree with him, making the gear box is not a problem. Propellers will be your biggest problem especially if you want scale props as shown in your picture. From the beginning you have to pick a scale for your project that you can power efficiently with your gearbox-prop combo.