This is for all of you guys who have broken your axles and were shocked at how much summit axles cost compared to e-revo axles ($60 vs $25).
. . . . . . . . . . . . . . . . . . AXLES
summit........metal ends........97mm upper shaft length..........encircled shaft end
e-revo.........plastic ends .......107mm upper shaft length........"U" shaped shaft end
Summit vs E-Revo axle comparision picture:
I have been running an e-revo axle on my original summit (on the LONG DIFF overhang side) with out issues. On full compression the longer erevo shaft reaches its max with about 2mm of play remaining within the blue dust boot - but with NO BINDING (at least on mine, but the total shaft length is controlled by how far you turn the two screws on the axle carriers "knuckles" by the wheels, my screws are showing approx 4mm of thread and runs fine) SEE PICTURE
stock summit axle on the overhang diff side at full compression:
e-revo axle on a summit on the overhang diff side at full compression:
But I did some further testing, I attempted to put an erevo axle on the over hang diff side of my second summit and to my suprise the e-revo axle circular connecter was too wide to fit. The bulkhead of the summit has a "hood" above the diff (only on the overhang side) which contacts the larger e-revo connection point (SEE PICTURE). This hooded portion does not appear to do anything special and 2mm of dremel work would make it fit fine. I probably could have forced it on, but tapping it with the dremel would be a much better idea.
e-revo axle contacting the "hood" of the summit bulkhead:
So in conclusion E-revo axles are not as strongly designed as summit axles (plastic stress points and "U" pronged connections vs metal stress points and encircled connections), but the e-revo axles can withstand up to 6s lipo power on the brushless e-revo with conservative slipper set-up. AND YES THE E-REVO AXLE WILL FIT ON A SUMMIT (INCLUDING THE LONG OVERHANG DIFF SIDE) WITH SOME MINOR CORRECTABLE DETAILS.
I will post this in the summit FAQ for further reference