I have recently bought an HP VT .61 engine but no manual was included when I bought it. The former owner did not have any info about it.
My need is some tech info about performance in RPM range and also Horse Power values. Also recommended prop sizes for running in and for normal use.
If there are any special issues to be aware of concerning this engine I would be grateful to know it, I don´t want to break it since it is rare.
I already know about the "T" crossing for giving a marginal lubrication to the head but this preassure is also used for tank prassure and I don´t know if it is of any use for the head.
I intend to use this engine in a model of a Swedish airplane flewn 1917-1923 called Thulin-K produced in the town of Landskrona (wich also is the town of my flying club)
WBR
Mikael Nilsson