Viable or Existing XAxis motor mount idea?

I had a thought about separating the X the mounting points from the X-axis mount in order to move the motor out to tension the belt instead of having a separate tensioner on the other end or on the carriage.
Is this a viable idea or has this already been tried?

Have a look at my upgrade parts for my Prusa i3 Steel inspired printer [www.thingiverse.com]

The X-motor sits on a carriage on extended X bars.



Richard

Edited 1 time(s). Last edit at 02/10/2017 02:02AM by RGN01.

Quote
RGN01
Have a look at my upgrade parts for my Prusa i3 Steel inspired printer [www.thingiverse.com]

The X-motor sits on a carriage on extended X bars.
[attachment 90316 e646c6e8501fee000b57035a9cd374ed_preview_featured1.jpg]
[attachment 90314 3ace77781742e02607e598c9f18f883f_preview_featured1.jpg]

Richard

Thanks, didn't think of springs.

1st attempt at a new mount.

Make sure that the Z slide is locked to the X rails firmly. If not the tension in the belt will try and pull the Z guides together.

Quote
MCcarman
Make sure that the Z slide is locked to the X rails firmly. If not the tension in the belt will try and pull the Z guides together.

I was hoping that the spring would compensate for that but I'm struggling to find spring suitable.

To try and be clearer, using RGN01s picture.
If the X guide rods went straight through the Z carriage then his springs will push the Z carriage to the right and it could move on the rods. The belt tension will pull the other z carriage to the left. you probably get bowed "vertical" sides.
If the X guide rods finish in the Z carriage and the motor is mounted on separate rods the Z carriage can't slide and you only need to stop the other z carriage moving.
The springs are only there to provide the tension in the belts. Belt tension = spring stiffness x spring compression distance.

Quote
MCcarman
To try and be clearer, using RGN01s picture.
If the X guide rods went straight through the Z carriage then his springs will push the Z carriage to the right and it could move on the rods. The belt tension will pull the other z carriage to the left. you probably get bowed "vertical" sides.
If the X guide rods finish in the Z carriage and the motor is mounted on separate rods the Z carriage can't slide and you only need to stop the other z carriage moving.
The springs are only there to provide the tension in the belts. Belt tension = spring stiffness x spring compression distance.

Yeh, sorry, brain crashed and misunderstood.
Also found an issue on the mount that I forgot to account for.

Edited 1 time(s). Last edit at 02/14/2017 03:22PM by GRAYWOLF.