I was thinking of modding my build to a double Y-tube system.
Maybe it’s just possible by mirroring one side of the 3d printed files.
I simply don’t like the idea of using a wood table to run my bearings on, and I think it could help accuracy and sturdiness of the machine.
Has anyone done something like this before? I couldn’t find anything like that.
Ryan notes: * The single Y rail keeps the machine properly constrained while maintaining ease of use. Two rails are extremely difficult to align, and fully constrained rails do not allow for easy removal of the machine.
I think its not that hard to align them, and I am not concerned in regards of removing things.
Welcome. It is strongly encouraged that you build it as designed before you start making significant mods like this one. That is to “try the chef’s dish first before seasoning it yourself”.
You’re not the first and won’t be the last to suggest this.
There were many improvements between the LR3 and LR4 and this is not something that changed. I can promise you the level of thought, planning, testing, engineering, and iteration of the design is significant. If this was deemed to be a concern, it would have been changed. In my experience (with the LR3), it’s a non-issue.
If you do this, you’re going to end up with an overconstrained machine. The Y belts do all the motion and torque transfer work, the Y rail is only needed to provide a linear reference.
You’re over thinking it and missing the elegance that makes the LR4 such an awesome machine.
As one who relies on the experts, you would be better rewarded building it as is, follow the YellowBrickRoad. Once it’s up and you’re running, then you can mod it however you want. But having built V1E machines in the past and not knowing anything about the design that went into these, I trust Ryan and crew 100%.
The Y tube I believe is no more then the steering mechanism Kinda like the cars at Autopia at Disneyland lol. (definitely just dated myself). And frankly, the majority of people driving should still be restricted by a single rail.
Good responses here telling you why you should build it stock first. It is not an enormous cost to build that end of the gantry twice.
I will say, it is your machine. Do it however you want.
If the issue is just running the machine on wood, maybe just run the bearing only side on a piece of flat bar or plastic plate. The LR3 had a few examples of people running that side on unistrut.
(definitely just dated myself). And frankly, the majority of people driving should still be restricted by a single rail.