I've spent several days modeling the bike to avoid building and then changing things. Along the way I spent some time learning a bit about Blender and Librecad. Interesting but a bit of overkill. In the end I mocked things up with Impress. Here's the result:
The issue with this geometry is chain routing. To get the chain to clear the wheel and frame an idler is essential. Here's a commercial bike that illustrates the matter:
There is, however, an alternative ... drive the front wheel. Curzbike makes a line of such bikes. Here's one:
By driving the front wheel a number of problems are avoided including chain routing. A bit of web research revealed several
sites for home built versions.
This is the one I more or less followed.
Since this solves a number of issues, I'm going to switch to this design.
No comments:
Post a Comment