While our team has shared many of the same Falcon 500 failures as others (Vex has been great at resolving and sending us replacement units/parts) I have not seen any posts related to this specific failure.
As you can see in the gif the shaft is free spinning from the mounting flange. The laser weld on the bottom securing these 2 seperate pieces together has sheared in half and while the shaft remains retained in the flange it does not spin with it.
We have had this failure 4 times now all with V2 long shafts 1 being on our intake Falcon and 3 being on our drive train. We have SDS MK4, 2 of this failure happened on drive motors while 1 happened on a steering motor. These were spread throughout the year with 2 being in season and 2 being during the offseason.
I’m just curious if there are any teams out there having this same issue or if it’s something we’re doing that’s causing this failure.
Is there a lot of side loading (cantilever) on the shaft?
As noted above 3/4 were on COTS SDS MK4 modules. I can’t speak to the amount of cantilevered radial force in these modules as I’ve personally done no math pertaining to it but I’m sure if it were an issue other teams would have mentioned something.
The one on the intake is face mounted to a plate with a pinion pulley as close the faceplate as it can be minimizing the amount it can be cantilevered but I would assume there would still be some.
My hope game permitting would be to use MK4i next year and to support the ends of the shafts with bearings like 254 did and suammarized in their write-up. While they mentioned they did not think it was necessary I personally love the idea.
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