SAWDUST CAN CAUSE CORROSIONHAnyone have info sawdust Damage hub motor or electric motors of any kind?
Desperately need any info/leads. Following exposure sawdust, motor grinding bike unrideable within 18 days. Motor sent to Bixtrix, deemed irreparable. Rust present, assumed water damage (no water exposure whatsoever!!) Given rust’s unusual appearance said ‘user-end’ as opposed to‘manufacture-end’ problem, not covered under warranty
Bike Swift Electric 2020 nearly brand new no prior problems
Bike’s exposed to sawdust from power saw table (alleging negligence against person operating it) Next ride 8 days later motor grinding, then next ride <2 blocks motor shrieked klunked & went dead. Mechanic diagnosed throttle clogged with debris (?source) prevented throttle from engaging in OFF setting, detected by bikes computer which disengaged power supply. Cleaned with air compressor, works fine.
Motor grinding persisted. Sent to Biktrix who said: Motor irreparable re: rust attributed to WATER EXPOSURE but no history of this (documented by evidence for month in & around sawdust exposure). Bixtrix doesn’t believe it so concluded water damage anyway. The IP65 protection in Motor does not cover particles small as sawdust. This is discussed below. I’m certain Bixtrix doesn’t even understand it.
Below Bixtrix Pics of Motor:
showing rust patches w/ discrete (water generalized re: spraying about) well demarcated irregular borders (water rounded margins) distinctly isolated (multiple tiny droplets diffuse) & separated from one another (water runs into itself) containing areas unaffected by rust (not possible w/ water sprays) between one another:
View attachment 2036
compare pics rust water damage (below):
motor affected throughout, consistent with water splashing as motor spins, spraying tiny water droplets all directions causing uniform distribution of rust.
Pics below of water damage consistent with description showing diffuse confluent generalized appearance
View attachment 2042throughout entire inner surface of motor.
View attachment 2043
Sawdust able to enter motor as IP65 doesn’t prevent Ingress Protection (ie. IP) for particles remaining Airborne >8hrs:View attachment 2044
Clause “2-8” refers to protection wrt particles gravitating within 2-8 hrs. Otherwise stated, particles remaining airborne after 8hrs can pass into motor.
Thus motor not dust proof dust tight.
Am sure Bixtrix doesn’t understand this.
Particle size 1 micron or less remains airborne:View attachment 2045As sawdust particle size < 1micron, can persist in atmosphere indefinitely:View attachment 2046
sawdust within motor affected damage in several ways. Tiny particles have unique characteristics;View attachment 2047
once inside motor, combined with atmospheric humidity:View attachment 2049
Leading to deposition of clumps. Wrt bike, after exposure it sat for 2 wks, giving adequate time for clumps to settle and stick. Then next ride, clumps fragmented off + spread.
Sawdust causes damage in numerous ways. Unfortunately limit with attachments reached
if interested Google Sawdust rust… sawdust corrosion… sawdust emission organic solvents.
Desperately need info Sawdust Damage electric motors. Nonexistent on internet is DUST hub motor damage
SAWDUST EMITS VOLATILE SUBSTANCES WHICH AFFECT METAL
SAW CAUSES RUST: