With the V5 limit of just 8 motors worth of power (even applicable for VEXU ) more teams are considering sharing motors between multiple subsystems. There are various options for doing that using ratchets , differentials , or transmissions , but most are facing the same obstacle of extra power losses to…

@technik3k <R11>… The intent of the rule is to allow teams to purchase their own commodity hardware without introducing additional functionality not found in standard VEX equipment. It is up to inspectors to determine whether the non-VEX hardware has introduced additional functionality or not. S…

How would you differentiate, as an inspector, between a bolt manufactured with a longer unthreaded section, and a fully threaded bolt with the threads carefully filed off to the desired location?

I would recommend more clarification from the GDC. However, the rules allow for larger bolts, like , which could be machined down to the appropriate size, increasing the cost and exclusivity, which is counter to what I believe the GDC has in mind for this rule.

Theoretically a student could chuck some high strength shaft on my metal lathe and turn most any fastener up to 12" long and 1/4" diameter. I’d have the students take pictures to prove the material came from legal VEX parts.

How good is the high strength shaft material for bolts? Vex lists the material type as 1018 steel, but I am not very familiar with the various types of steel

1018 is a pretty typical low carbon steel for non-heat treated fasteners and stuff. The “10” means plain carbon (no alloy) and the “18” means 0.18% carbon.

Very good! Congratulations on creating the transition system for the gear set. Would you like to know more details about this construction, do you have images with more details of the construction or some 3D drawing that could be shared?

This looks very solid, however, I have a few questions about it. Is there any reason why you put a gear on the bottom bar, and is there a benefit to not stacking the two mid-gears? Also, wouldn’t it be sturdier to sandwich the bars connected to the tower rather than attach them on one side?

[image] AperatureLabs: So I may need to clarify what qualifies as a additional functionality. the GDC has confirmed that any commercially available bolt can be used, including set screws and screws with captive washers, … … but not threaded rods or eye bolts . However this is spread across the …

[image] Robo_Eng_13: How would you differentiate, as an inspector, between a bolt manufactured with a longer unthreaded section, and a fully threaded bolt with the threads carefully filed off to the desired location? We found that you can polish screws with a buffing wheel to smooth out the s…

Special partially threaded screw joints and HS gear bearings using modified 393 output gears

VEX V5 General Discussion Technical Discussion

technik3k March 22, 2020, 8:23pm 33

<R5>, <R14>Is it Legal to Use 393 Motor Refurb Gears and V5 Cartridges as Mechanical Compnents? : Robot Events was answered for TT season, once again allowing usage of the 393 motor output gears as mechanical components elsewhere on the robot: