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What motor took a .542 piston?

Posted: Mon Nov 09, 2015 12:38 pm
by mAdMan
I have 2 new pistons and sleeves that I thought were for .12 CV-Rs based on their porting. I tore down a .12 cv-r yesterday and the piston is .551. So then what do these belong to? Is it possible a Picco 12 speed has this piston size?

Re: What motor took a .542 piston?

Posted: Mon Nov 09, 2015 3:50 pm
by mAdMan
Found it.

The OS 12-TG
http://manuals.hobbico.com/osm/12tg-series-manual.pdf

Bore .543
Stroke .551


It's basically a stroker .12cv