- Rubber bush
- A British term for Rubber bushing.
- 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.
- 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 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.
- 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 neighboring car).
- Rudder stop
- A stout bracket to limit the swing of the rudder to the maximum 37 degree starboard or port.
- Rule of 78
- A mathematical formula used in figuring a rebate of unearned charges or premium, when these charges were pre-computed and pre-paid. Once referred to as "78 ways we get to keep your money".
- 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
- (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 lane to warn the driver that a stop sign is ahead.
- A series of grooves cut along the shoulder of the pavement. When a vehicle drifts over the rumble strips, a loud noise and vibration results, serving as a warning to sleepy or inattentive drivers.
- 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
- Runabout
-
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
-
Emergency bypath next to a steep downgrade that a vehicle can steer into after losing braking power. Sometimes one to three lanes wide and several hundred feet long, the lane is a soft, gravel-filled pathway which helps to absorb the vehicle'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.
Click image to supersize
Also see
- 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.
Also see
- Run channel
- A U-section rubber used to hold glass parts and other body features in place or to protect panel edges.
- 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.
- Running
- A condition where a motor, engine, or feature is operating at least at its minimum requirement.
- 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.
Also see
- 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-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 rails
- Used to describe a car that is handling perfectly, as though it were actually attached to railroad tracks.
- Running winding
- Electrical winding of motor which has current flowing through it during normal operation of motor.
- 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.
- 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 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 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 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.
- 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
- Rust protection
- Reducing the possibility of rust forming on iron and steel by coating with protective materials or by rendering them passive.
- Rust sealer
- A rust converter that provides a coat on metal surfaces to protect them against air exposure and thus to prevent continued corrosion.
- Ruxton
- A vehicle brand of which the 1925-1948 models are classic cars.