Originally Posted by
harryn
Hi, I have been studying belt drive setups for a while. My personal opinion is that the best tooth form for a conventional belt drive is the AT style, and for even more precision, the ATL style. You can also buy precison shaped timing pulley teeth to reduce backlash even further.
All of that being said, tooth shape, tooth strength, and engagement accuracy is most likely not your current limiting effect, it is belt width, and there is nothing much you can do about that with those actuators. That leaves you with only the tension members to work with.
Steel tension members, IMHO, are a must. Further, not all tension member construction is the same, and Brecoflex is one of the best for this, regardless of the tooth style. edit - I did some more reading on the carbon fiber members that R. Zastrow discussed - also a viable option if you are happy with the belt style.
If you are wanting to do this on a tight budget, then just change out the belt for a better one, but I would go the full route and go for an AT style chance out if you can. AT-10 25mm wide. Just keep in mind that there will be some stretch under high loads / high acceleration no matter what you do. When I ran the numbers, the main challenge was acceleration of the gantry.
What are your build goals for results ?
Harry