Thanks for your question,
Although RCV is currently focusing on the CD range, we will still look at expanding the SP range in the future.

For the time being however, we need to ensure that RCV has a representative range of model aero-engines, to ensure that the products gain the maximum of exposure in modelling shops and flying clubs. Although the SP range if very important to us, the scale use market is limited, whereas the CD range does appeal to a much wider group of modellers so is also of importance.

On top of this, as we already have 3 engines in the SP range, so we want to ensure we have a number of engines in the CD range to balance this out.

One of the real scale benefits you will find with the larger CD engines is their size. The 58CD is 1.4cm shorter than conventional engines which make cowling much easier. This size advantage will be increased even more, the larger the CD engine

I hope this answers your questions,
Best regards
Laurenne