Here is the entry for the current line up of Aero engines from Mantua Model in Italy:

http://www.mantuamodel.com/index.php...elli&Itemid=92

The four stoke 1.20 is pictured in the link. It is a belt driven SOHC design.

The link shows a catalogue page from 2000. I understand OPS have some newer engines out as well. The 30 MAXI and 1.20 four stroke are apparently still made.

For parts, check with this gentleman in Canada, he should be able to assist. Copy edited entry from an OPS thread on another RC forum:

[Hey FIERY, The OPS 30 MAXY and the .120 4 stroke are always available and their replacement part to. If you need part or complete engine let me know.

My name is Sébastien. I'm from province of Quebec. I'm recently OPS distributor for OPS engine. I will receive my first stock soon. If you need part for your engine let me know and i will help you. Thanks!!

Sébastien
Hobby Soulanges
[email protected]]