Sawtooth rails for Gravitrax

This is a another ‘slow’ rail, that takes speed off a marble as it progresses down a track. There are 2 versions.

• Version ‘a’ has wider tooth, so that marble moves up a shallower incline.
• Version ‘b’ is narrower tooth with a steeper incline.

In general, version ‘b’ rails are slower. The 2hx and 3hx length rails have extra teeth.

Version ‘a’ rails are marked with an ‘*’ and version ‘b’ rails are marked with a ‘+’ sign. This makes them easier to identify.

In the print file you'll see 3 plates - 1Hx_a+b, 2Hx_a+b and 3Hx_a+b. That's one for each standard length rail. The 3Hx rails are oriented at 45 degree across the plate to fit the A1 Mini.

I've included a short youtube video to show how they can be used. For some reason the 2Hx_b rail is tricky to use on a track.