Bikes and Bike Designs

Created by Louis Roland on 16 July, 2018

I want to make a four-wheeled bicycle similar to the one shown in Figure 1, but I encounter difficulties in frame design. This may be the reason why I am not skilled in using SOLID WORKS, so is there a more convenient frame design software? Fig. 2 is a front-end made by SOLID WORKS. Fig. 3 is found in Weibo.

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Obviously, my drawings are not very standard and time-consuming.