2 Groove or Not to Groove

GravityX

0
Pro Racer
Feb 25, 2012
3,538
84
48
13
Tornado Alley
Do you believe there is any advantages here? One groove in the normal location with a second groove up by the axle head? Anyone run axles like this yet? We've seen other variations, just curious.

Multi-grooveAxle_zps3d5aa0db.jpg
 
Per the title, the first thing that came to my mind was a Disco song Groove thing haha.
However, I am not a machinist but the groove at the head of the axle might be the result of champhering the head of the axle. That's just a guess.
Now for some Disco...haha
 
The groove right under the axle head will prevent friction with the outer hub inner ring that cannot be removed in most scout races. Our pack and district bans any hub (outer and inner) work or modification.

The groove under the axle head moves the axle contact point into the wheel bore. Both the grooves when sprayed with pledge attract and hold graphite.