DICTIONARY OF AUTOMOTIVE TERMS - "Ru"
- Rubber:
- All the rubber seals, mats, and pads that cushion and protect
vehicle windows, trim, handles, bumper sections, carpets, etc.
- The tires. See also peel
rubber.
- An elastic substance used in tires.
Also See:
blade rubber
bonnet bump rubber
bump rubber
butyl
hard
rubber
hood bump
rubber
natural rubber
peel rubber
precured tread rubber
raw rubber
synthetic rubber
- Rubber bush:
- A British term for rubber
bushing.
- Rubber
bushing:
- A tubular rubber sleeve for mounting a shaft or rod.
- Rubber
coupling:
- A flexible coupling using pressurized rubber blocks.
- Rubber
doughnut coupling:
- A typical flexible coupling, made of vulcanized rubber, shaped like a
doughnut.
-
Rubber-isolated crossmember:
- A laterally aligned structural member that is attached to the body or
the frame via
vibration-absorbing rubber isolators. By bolting suspension or driveline components to
such
crossmembers, automotive engineers can reduce the transmission of noise and/or ride
harshness to the
body.
- Rubberize:
- To coat or impregnate with rubber.
- Rubber
mallet:
- A hammer with a rubber head.
- Rubber-mounted:
- A
system of rubber cushions and/or jointed engine mounts to isolate engine
vibrations from the
rider.
- Rubber plug:
- A molded rubber stopper used to close cutouts or holes in body
panels that have to be
opened only infrequently, e.g., access holes for rustproofing of box
sections.
- Rubber ring:
- See doughnut
coupling.
- Rubber
spring:
- An element of a rubber suspension system such as hydrolastic
suspension.
- Rubber
squeegee:
- A special spreader used for filling hollow, concave or rounded body
areas; the rubber
material adapts better to these surfaces than plastic spreaders and helps to
prevent flat
spots.
- Rubber
valve:
- See sponge rubber
valve.
- Rubbing
block:
- A little block located on the movable point that contacts the distributor cam wheel and causes the
points to open. A
spring causes the points to close.
-
Rubbing compound:
- A polish that contains abrasives harsh enough to remove
layers of "dead" paint.
Useful in radical restoration
procedures, rubbing compounds should
not be used on new
cars or those with delicate finishes.
- Rubbing
strip:
- A strip of plastic at the widest point of the body, along doors and
fenders down each side of
the car to protect the bodywork from minor nicks, (as from the open door
of a neighbouring
car).
- Rudder
stock:
- A vertical rudder shaft that connects to the steering gear.
- Rudder stop:
- A stout bracket to limit the swing of the rudder to the maximum 37
degree starboard or
port.
- Rudge nut:
- A quick-release nut for central-locking wheels.
- Rule:
- See two second
rule.
- Rumble:
- A noise found in high-compression engines
and associated with bending vibration of the crankshaft.
It is caused by abnormally high rates of pressure rise near top dead center.
- A vibration caused by loose components.
Also see rumble seat.
- Rumble seat:
- (RS) An open-air seat at the back of some older automobiles. Called a
"dickey" in
Britain.
- Rumble strip:
- A series of small ridges placed across the driving lanes to warn the
driver that a stop sign is
ahead.
- Run:
- The trail of a paint drip; a dribble of paint
- To form a paint run which is usually caused by moving the spray
gun too slowly or
spraying too close to the panel surface thus causing an excessive build-up
of paint.
- To start an engine and keep it going.
Also See:
chain run
runabout run
channel
- Runabout:
- An open sporting-type vehicle, lightweight, with two seats and
with simple bodywork,
i.e., a roadster.
- A small car used strictly for driving in town
-
Runaway Lane:
- See Runaway Truck Ramp
-
Runaway Truck Ramp:
- Emergency area adjacent to a steep downgrade that a heavy truck
can steer into after losing braking power. Sometimes one to three
lanes wide and several hundred feet long, the ramp is a soft,
gravel-filled pathway which absorbs the truck's forward momentum,
bringing it to a safe stop. Depending on the surrounding terrain,
the ramp may be level or run up or down hill.
- Run channel:
- A U-section rubber used to hold glass parts and other body features in
place or to protect
panel edges. Also see runabout run
channel.
- Run flat:
- Damage sustained by a tire due to driving with insufficient air
pressure or while flat. Some
types of tires will allow you to run the tire with no air pressure for a short
period of time.
-
Run-flat properties:
- The capability of a deflated tire to operate effectively, i.e., to permit
further driving. To
achieve this, the following must be fulfilled: the tire beads must be
retained against the rim
flanges and on the rim bead seats when the tire deflates; the tire must be
able to support all
possible stresses imposed by deflation: the tire must remain undamaged by
internal friction and
heat generated when running flat; the tire should be able to self-seal any
punctures, so that the
remaining air will be trapped and heat will be generated to reinflate the tire
within limits.
- Run-flat tire:
- A tire which can run for a certain length of time without air in it. In
the inflated state,
conventional tubeless tires perform the task of containing air and rolling.
Once deflation occurs,
the tire bead becomes dislodged from the rim bead seat and slides into the
rim well. As a result of
friction, the tire will become distorted and the rim may plough into the
road, leading to loss of
control and potentially resulting in an accident. Run-flat tires are designed
to operate effectively
with or without air, providing acceptable handling qualities when deflated,
and good handling
qualities when inflated.
- Run in:
- A British term for break-in.
- Run-in:
- See break-in.
- Runner:
- See seat runner.
- Running:
- See:
daytime running
lights
slow-running
- Running
board:
- A long flat footboard on either side of a vehicle which acts as a step
for passengers. They
were particular common on vehicles before 1940.
- Running fit:
- See running-fit.
- Running-fit:
- A fit in which sufficient clearance has been
provided to enable the parts to turn freely and to receive lubrication. Where
sufficient clearance
has been allowed between shaft and journal to allow free running without
overheating.
- Running
gear:
- The system of the engine, transmission,
drive shaft, differential, and wheels.
- The parts of the vehicle which cause the wheels to roll, i.e.,
suspension, steering
components, springs, shock absorbers.
- Running-in:
- Driving a vehicle or running an engine or other mechanical unit at
reduced speed and load
when new, to prevent pick-up and seizure of the bearing surfaces, and to
ensure even initial
wear.
- Running
lights:
- See daytime running
lights.
- Running-on:
- A condition of a spark ignition engine in which fuel continues to burn
after the ignition
switch has been turned off, causing the engine to keep on running. Also
called dieseling.
- Running-on
control valve:
- See idle stop
valve.
- Running
on rails:
- Used to describe a car that is handling perfectly, as though it were
actually attached to
railroad tracks.
- Running
time:
- Amount of
time a condensing unit Is run per hour or per 24 hours.
- Running
winding:
- Electrical winding of motor which has current flowing
through it during
normal operation of motor.
- Run on:
- Condition when the engine continues to run, even when the key is
turned off. See dieseling.
- Run-on tire:
- A tire with a limited ability to run without air in it; sufficient to pull
over safely. Compare
run-flat tire.
- Runout:
- The amount a gear or wheel moves in and out away from its
true center as it is rotated. If runout is excessive the gear or wheel can be
seen to wobble as it rotates.
- Side-to-side warpage of the brake disc friction surfaces.
Measured with a dial indicator.
Also See:
vacuum runout point
lateral runout
radial runout
- Runout point:
- See vacuum runout
point.
- Rupture:
- To break, burst, or split.
-
Rush-hour traffic:
- A road or area that is full of vehicles during peak time such as in the
morning when
commuters are going to work, at noon when people are going for lunch or
coming back to work,
and after work when people are going home.
- Rust:
- Oxidized iron or steel, the product of corrosion.
- To form rust.
Also See:
anti-rust treatment
scale rust
white
rust
- Rust bucket:
- A colloquial term for a badly corroded car.
- Rust
converter:
- A chemical substance containing phosphoric acid etc. which
transforms rust into a stable,
firmly adhering iron compound by means of a chemical reaction.
- Rust eater:
- See rust killer.
- Rusting:
- A chemical or electrochemical destruction of iron and ferrous
metals.
- Rust
inhibitor:
- A substance which reduces or prevents the formation of rust on iron
and ferrous
metals.
- Rust
inspection:
- A vehicle inspection conducted to detect rust and corrosion damage,
usually by means of an
endoscope.
- Rust killer:
- A substance which convert rust into a dry mass which can be
removed with water.
- Rust
neutralizer:
- See rust converter.
- Rust pinhole:
- The early stage of rust penetration of a panel; rust pinholes will often
reveal larger rust
damage once the surface rust bubbles have been ground away.
- Rustproof:
- Resistant to rust.
- To make resistant to rust.
-
Rustproofing:
- A process in which metal (such as iron and steel) is sealed from
moisture and oxygen so
that it will not corrode. Also see aftermarket
rustproofing.
-
Rustproofing agent:
- An anti-corrosion, wax-based sealant.
- Rust
protection:
- Reducing the possibility of rust forming on iron and steel by coating
with protective
materials or by rendering them passive.
- Rust
remover:
- Any chemical substance which removes rust.
- Rust sealer:
- A rust converter that provides a coat on metal surfaces to protect
them against air exposure
and thus to prevent continued corrosion.
- Rust
treatment:
- See anti-rust
treatment.
- Ruxton:
- A vehicle brand of which the 1925-1948 models are classic cars.
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