325mm Belt

Looking at the design after almost a year, I realise I was much too optimistic about the fitting of components. My focus should be on getting anything that works first and only then seeing if I should try and shrink things down. Ergonomics already imposes strict and tedious limitations. I guess this entire project has essentially been me reluctantly making Tetrinsic larger and larger.

Anyway, in that time, I know that the black 280mm belt has been discontinued. I've now modelled a 325mm belt and 1-inch pulleys to allow for more space. The 24T is replaced with the 32T already in the pulley for one less unique part. 

If I hadn't already purchased the rotors last year, I would've increased the shaft length from 54mm to 63mm for more design flexibility, but I'm stuck with what I've got now. The issue is that all this stuff here is unreasonably small. That red cross section is 0.8mm, for example:

Maybe the real issue is that I just don't want to buy anything. I know inventing things that doesn't exists costs a lot of money, but it sure feels cold and soggy when you're having to spend your own instead of merely watching someone on YouTube spend theirs. You know, "Think how many [insert item I don't need, especially in the quantity required to make a point] I could buy with that kind of money!" and all that.

[Aug 12]

304mm Belt

It's not actually mentioned in the title or images, but the seller actually offers a few belt sizes in between 280mm and 325mm:

I looked into worm gears and 3mm width MXL belts as possible ways to reduce the amount of bearings and overall size of the torque transmission, but have currently decided on a 24T-40T gear train:

Understandably, I still want to prioritise compactness. The length is currently 141mm.