Weight issues from my critique point.
The third shaft is the output shaft and is geared down from the second shaft's spur gear by what seams 1:2 maybe 1:3. There isn't a whole lot of reduction and a lot of weight. Possibly eliminating the third shaft and making the second shaft longer to attach a sprocket... but then that wouldn't work because the shaft moves and the sprocket would need o be mobile. SO maybe if you made the first shaft move with a spur gear straight from the CIM the one of the 2 gears on the first shaft. That would make the first shaft mobile and you could then attach a sprocket to the immobile (laterally, not rotationally) second shaft. In essence that would reduce the size of the big middle spur gear originally on shaft 2 and the gear it connected with on shaft 3 would no longer be necessary.
Its kind of a radical change, but just an idea of other possible means to reduce weight.
Also, the hubs on the gears can be reduced. a lot. They are pretty huge massive in the pic. a simple trip to the "digital lathe" could fix that.
my $.02
Good luck with version 1.2 Arefin.
