CYC X1 Gen 4 72v going pretty hard up an EBIKE downhill track.
Was max of what I got in me....but far from what the motor can really do. 59c motor temp at the end.

Watch me go down same track with a Trek Slash with a CYC Stealth kit on here:    • CYC Motor Stealth Gen3 Ebike Motor Ri...  

https://www.cycmotor.com/x1progen4
CYC Owners group:   / 407576456456280  

Bike is Saracen Myst 2015 27.5 with CYC X1 Gen 4/X12 controller
Fox 40 drop crown with 2 tokens
Fox DHX2 550lbs
Magura MT 5 223 TRP R1 disks
Bulletproof Single Speed with Zee deralieur.
12t/63 Primary.
36t/36t gearing
Paul Comp Hub with UHD Freewheel
510 Single speed chain.
Domino throttle
72v 15ah battery. 120A peak.