The first instalment of a short account on the work I did to repair the 1969 Honda CT90 K1 above. The jobs required were largely repairs and recommissioning...
The first instalment of a short account on the work I did to repair the 1969 Honda CT90 K1 above. The jobs required were largely repairs and recommissioning...
Honda CT90
I developed the theme used on this site from scratch and have made it available as free open source software....
I developed the theme used on this site from scratch and have made it available as free open source software....
website hosting
Here are copies of the colorised wiring diagrams I created, based on the original Honda black and white diagrams.
If you aren't familiar with reading this type of diagram (it is not has hard as it first appears!) then you can read more about them here:
Honda C90 - electrical system overviewElectricity Learning...
Here are copies of the colorised wiring diagrams I created, based on the original Honda black and white diagrams.
If you aren't familiar...
C90 electrics
The recommended web server for Ghost installations is Nginx. The software has a number of features in addition to its HTTP server capabilities - including caching, load balancing and more - but the bits we are most interested in when running a simple blog site are the web server and reverse proxy.
As the name...
The recommended web server for Ghost installations is Nginx. The software has a number of features in addition to its HTTP server capabilities - including...
website hosting
I have finally got the comments section of the site working. If you'd like to suggest corrections; ask questions or make a comment, please feel free. No swearing!
You will need to supply an email address (look for the banner at the end of a post) and then check your inbox for an...
I have finally got the comments section of the site working. If you'd like to suggest corrections; ask questions or make a comment,...
website hosting
This article contains a brief survey of the different carburettors fitted to CT90 range, and an in depth look at the the K28A installed on my CT90 K1. The K28 carb was used on the K1-K3 (1969-72) models, and is very similar to the subsequent 556a model that was used until 1977.
carburettor models
The...
This article contains a brief survey of the different carburettors fitted to CT90 range, and an in depth look at the the K28A installed on...
Honda CT90
Checking your cylinder is within the service limit involves measuring the bore with a cylinder gauge as shown in the following diagram:
What follows is what I've found out about this process from research and experimentation, but please note that I'm not an engineer and I'm just doing this...
Checking your cylinder is within the service limit involves measuring the bore with a cylinder gauge as shown in the following diagram:
What follows is...
C90 Engine
Honda invented the posi-torque system in 1967 and used it on the CT90 range of the same year. This ingenious device had the effect of providing the bike with 4 additional hillclimbing gears in addition to the standard 4 ratios for road-riding
Earlier solutions
The posi-torque system replaced the unwieldy dual rear sprocket arrangement used...
Honda invented the posi-torque system in 1967 and used it on the CT90 range of the same year. This ingenious device had the effect of...
Honda CT90
Chains tend to 'stretch' in use because material wears away from the bushings and pins, increasing the clearance between the parts and causing the chain to elongate. As a result, when Honda replaced the Super Cub push-rod engines with a new chain-driven overhead cam model they needed to incorporate a chain tensioner to...
Chains tend to 'stretch' in use because material wears away from the bushings and pins, increasing the clearance between the parts and causing...
C90 Engine