3 ms·

I have more miles than you :-) (14,000) ((I have exclusively biked for over a decade)) But you know what might be an interesting design idea: Make a shaft dri

I have more miles than you :-) (14,000) ((I have exclusively biked for over a decade)) But you know what might be an interesting design idea: Make a shaft drive like this which is centrally aligned. But the bike has TWO rear wheels as closely spaced as possible and the shaft drives a single axle for the rear -- but has more gearing up front... But make the two rear wheels with a camber such that they angle out slightly such that their centerlines are as clos as possible - allowing for turning to be essentially the same as a single-rear-wheel bike...

cr0sh 7y ago
I'm curious as to how you would drive both rear wheels with a single central shaft? Both sides would rotate in opposite directions; I can't find a good example to illustrate what I am saying, unfortunately. I trust you understand what I mean. Now - there might be a way around this, but it would probably introduce more complications and friction to the mix (one way would be to drop/raise the central shaft off-center of the driving wheels centerline, then have separate fore/aft gearing on the shaft to drive the wheels in the proper direction).
- samstave 7y ago
  Shoot I think you may be correct. I hadnt thought of that aspect. Maybe it would require the central shaft to rotate a single gear in the forward direction which was attached to via smaller chain that rotates the axle between the two wheels...? Yeah... basically what you said in the second paragraph of your comment.... This would be a fun design challenge. Anyone Solid on Solid Works want to give it a go??? --- OH . I thin I have it, but I dont know how efficient it would be: A Worm Gear: https://i.imgur.com/BgJODdP.jpg https://i.imgur.com/BgJODdP.jpg
  - robotresearcher 7y ago
    Here's a solidworks tutorial making a differential gear which is how many/most vehicles solve this problem. https://youtu.be/qqFTMhubEtc https://youtu.be/qqFTMhubEtc A differential gear solves both the direction problem and the distance between the wheels when turning problem.

cr0sh 7y ago

I'm curious as to how you would drive both rear wheels with a single central shaft? Both sides would rotate in opposite directions; I can't find a good example to illustrate what I am saying, unfortunately. I trust you understand what I mean. Now - there might be a way around this, but it would probably introduce more complications and friction to the mix (one way would be to drop/raise the central shaft off-center of the driving wheels centerline, then have separate fore/aft gearing on the shaft to drive the wheels in the proper direction).

samstave 7y ago
Shoot I think you may be correct. I hadnt thought of that aspect. Maybe it would require the central shaft to rotate a single gear in the forward direction which was attached to via smaller chain that rotates the axle between the two wheels...? Yeah... basically what you said in the second paragraph of your comment.... This would be a fun design challenge. Anyone Solid on Solid Works want to give it a go??? --- OH . I thin I have it, but I dont know how efficient it would be: A Worm Gear: https://i.imgur.com/BgJODdP.jpg https://i.imgur.com/BgJODdP.jpg
- robotresearcher 7y ago
  Here's a solidworks tutorial making a differential gear which is how many/most vehicles solve this problem. https://youtu.be/qqFTMhubEtc https://youtu.be/qqFTMhubEtc A differential gear solves both the direction problem and the distance between the wheels when turning problem.