Honda CT90 - Front Suspension

The earliest CT90s shared the same leading link suspension as the C90 Super Cubs. This is a great design, offering

Honda CT90 (k1) - wiring diagrams

I am recommissioning an old CT90 k1, sold in the USA in 1969. I've colourised the wiring diagram to make

Honda C90 - crankshaft refurbishment

There are plenty of places that will rebuild your crankshaft for you, but it is also a job that can

Honda C90 - putting it back together

Intro If you have dismantled your bike in order to refurbish it then, once you have finished reassembling the engine,

Honda C90 - air cleaner and exhaust

It hardly needs saying but the engine only works when air gets in one end and exhaust gasses exit the

Honda C90 - Crankshaft

The forces created by combustion pressure are transferred to the piston through to the connecting rod, causing the crankshaft to

Honda C90 - transmission and performance

The transmission takes energy from combustion and transmits it to the rear wheel. The mechanism is shown below: The power

Honda C90 - brakes

The c90 uses a drum brake design that is essentially unchanged since it was first introduced over 120 years ago.

Honda C90 - forks, suspension and steering

This post explains the design of the Honda Super Cub suspension and steering.  If you are interested in fitting tapered

Honda C90 - piston, cylinder and combustion

Internal combustion engines convert the chemical energy stored in fuel into the mechanical energy used to power machines when the