Cylinder prototypes are finally done! They have been completely machined,
bored, nickasil plated, honed and finished... they are really ready to go, now!
Here you are:
As it can be seen from the pictures, the two prototypes have different internals
(look at the exaust flange). Different diagrams, different port shape, different time-area, etc. etc.
There are various alternatives for exaust and transfer ports, which I can insert into the mould prior casting in various combinations. I want to test the various configurations at the dyno before starting the real production.
More news coming soon... stay tuned.
Literally hundred hours of late night work were spent in thoroughly
redesigning the cylinders in order to adapt them to the RG while
preserving reliability and performances.
The internal (transfer and exaust ports) is state of the art and comes from engines that are currently racing: I signed a NDA (Non Disclosure Agreement) to be allowed to use them and that's why I purposedly omitted more revealing pictures.
Some features are described in the following.
There is an adapter plate being machined now. Here is a picture showing the partially done object:
The cylinder has abundant cooling; exaust port and valve are water cooled too. As you can see in this picture, the cylinder casting has been specifically modified with two "tunnels" to match the rear water input of the RG: