Things to talk about
samson’s brake pedal
potentiometer adding
design review
(dwg)
RSU sims
RSU caliper mount dwg
no dwg needed, can export dxf
FSU caliper mount design review
(dwg)
parking brake mount design review
(dwg)
Fasteners Discussion
ASC says:
mismatch in bolt and nut grade does not batter as long as both individually meet requirement (Grade 5, Class 8.8)
must have two FULL threads protruding out the end of the nut
iusually last 1 or 2 threads are tapered a bit, so those don’t count
(so add extra leeway for bolt length)
OTS parts (e.g. caliper) CAN be modified (shaved, etc) so long as structural integrity is maintained
factory-installed bolts on calipers are allowed to be taken apart, if properly re-installed with a flexloc nut
No shaving nuts
Shaving bolts ????
Caliper mounting bolts: do not need to be secured
Flexlocs:
low profile flexlocs exist, datasheet here
jon sent email, no response yet, will ask for quote
FOR ALL shoulder bolts, use low-profile flex-loc
for static connections, use regular or low-profile (depending on price)
Questions to ask maybe still:
Can you shave/cut/modify bolts
front-most clevises on chassis might require it
Matt check regs, if not jon email
Action items:
parking caliper: take apart factory bolts, align slots, and replace with M10 locknut + bolt pairing
Brake Design Review
How to read input:
rotary potentiometer
limit switch
brake fluid pressure sensor
rotary encoder w spring ('tape measure')
Problem with displacement-based sensors is distance from rotating axis:
(sensor travel range) = (sensor distance to pivot point) * 30mm/4mm
Potentiometer
no space doesnt work with design
Limit Switch
limit switch is much simpler mechanically & electrically, would be preferred
‘Tape Measure’
Force-variable resistor
Hydraulic Sensor
Design Concerns
To-do:
find a limit switch that works within parameters defined
2.5mm limit switch travel to actuate
~4mm cylinder travel to actuate
screw mounting if possible, no hot glue pls 😞
make the pedal arbitrarily 10 degrees forward
check the “Pedal Behaviour Nodal” sketch or make ur own
Parking Caliper - Pull Cable
Caliper Mounts
Jens was tired so he will look at details later, but no glaring issues
Ahnaf Shahriar will do the drawings :))))
Misc:
high strength
send sponsorship package
this could mean
you do another part
you give a grant
you re-consider costs a little bit
accelerometer pedal cad?
might exist somewhere, but dont hope on it
what is the max gauge the ESMS can bend?
must be at least 10 gauge or else it’ll fail sims
Questions for ASC: (Jon will ask….)
modifying bolts?
parking tow cable not nyloc?