In January 1969, the American magazine Model Airplane News (MAN) published Peter Chinn’s review of the new Austrian Hirtenberger HP […]
Continue readingCategory: Engines
In this section, you will find interesting and sometimes historical articles about model aircraft combustion engines. Tests, company profiles and more.
OPS Speed 60 1977
Over the past few years, the Italian OPS firm has enjoyed steadily increasing success in the .60 cu.in. speed engine […]
Continue readingReview Kraft 61 R/C
KRAFT SYSTEMS Inc. of Vista, California, are widely known as one of the world’s leading manufacturers of model radio control […]
Continue readingFirst days of OPS engines
Here is a report on the beginnings of Italian engine manufacturing by Piero Muzio (OPS). Full content is available to […]
Continue readingA visit to Rossi
In 1982, our friend Erich Däubler visited the Rossi factory near Brescia in northern Italy. Here is his report with […]
Continue readingWebra – the story
The engine manufacturer Webra was one of the largest engine manufacturers in model aircraft history. Due to the switch by […]
Continue readingOS Engines 10cc Timeline
For engine collectors, As a passionate collector we put the timeline of ever produced 10cc OS Max engines since 1963 […]
Continue readingWebra Speed 61R
In all, there are now six different Webra 61 R/C engines. Two of them, the Blackhead 61 and Blackhead 61 […]
Continue readingSuper-Tigre ST 60
However, as is often the case with Super-Tigres, a number of design changes followed within a relatively short time and […]
Continue readingROSSI 60
Test Rossi .60 First Impression of the new Rossi 60 10 c.c. speed unit is of a really powerful and […]
Continue reading
























