The c90 uses a drum brake design that is essentially unchanged since it was first introduced over 120 years ago.
Renault drum brake
Drum brakes were first patented by Louis Renault in 1902, as shown in the patent diagram below left. Despite its apparent simplicity, this invention was a huge improvement on the previous alternatives...
The c90 uses a drum brake design that is essentially unchanged since it was first introduced over 120 years ago....
This post explains the design of the Honda Super Cub suspension and steering. If you are interested in fitting tapered roller bearings instead of the standard ball bearing used in the steering head then see here.
Leading Link Forks
All the Honda Super cubs since their introduction in 1958 until relatively recently were fitted with...
This post explains the design of the Honda Super Cub suspension and steering. If you are interested in fitting tapered...
Internal combustion engines convert the chemical energy stored in fuel into the mechanical energy used to power machines when the fuel air mixture is compressed in the space between the piston and the cylinder head and ignited by the spark plug.
The design of the piston, cylinder and cylinder head plays an important role in...
Internal combustion engines convert the chemical energy stored in fuel into the mechanical energy used to power machines when the...
The first Super Cubs did not have pumped lubrication, instead the crank, piston and cylinder were splashed by oil thrown up by a dipper on the big end of the connecting rod.
A similar device can be seen in towards the end of this excellent video about engine lubrication:
As shown in the diagram above,...
The first Super Cubs did not have pumped lubrication, instead the crank, piston and cylinder were splashed by oil thrown...
If you've ever worked on a vintage Japanese motorcycle you've almost certainly struggled with countless buggered-up cross head screws. The usual recommendation to avoid further screw mangling is to put aside your old Phillips screwdrivers and get some "JIS" ones instead.
There is a lot of confusion about this...
If you've ever worked on a vintage Japanese motorcycle you've almost certainly struggled with countless buggered-up...
The final wiring system to look at on the C90Z2 super cub is the system that supports the lighting and horn. The wiring diagram is a bit more complicated compared to the ignition and charging systems:
It is not as confusing as it first appears though, and if you trace the wires from the various...
The final wiring system to look at on the C90Z2 super cub is the system that supports the lighting and...
The charging system used on the 6v C90 super cubs is pretty straightforward and consists of a battery (to store electricity), an alternator (to generate electricity) and a rectifier (which converts the alternating current created by the alternator into the direct current needed by the battery). Here is the wiring diagram for the charging system:...
The charging system used on the 6v C90 super cubs is pretty straightforward and consists of a battery (to store...
The job of the ignition system is to produce the spark that ignites the fuel/air mixture in the engine combustion chamber. It consists of a power source (either battery or a generator), a switching device to start and stop current flow at set intervals (contact breaker points or an electronic switch), a device to...
The job of the ignition system is to produce the spark that ignites the fuel/air mixture in the engine...
Electricity
Learning the basics of automotive electrical systems, even the simple system used in the Honda super cub, was something I approached with a little trepidation.
My schoolboy science got me as far as grasping that the electrons in conductive materials like metal can “jump” between atoms, displacing others in the process and thereby causing...
Electricity
Learning the basics of automotive electrical systems, even the simple system used in the Honda super cub, was something...
The history of the automatic clutch used in Honda's Super Cub motorcycles can be traced back to the 1940s. Soichiro Honda's early success with auxiliary engines had shown him there was a market in Japan for inexpensive motorised two wheeled transport.
By the mid 1950s he had begun to think of...
The history of the automatic clutch used in Honda's Super Cub motorcycles can be traced back to the...