I never heard of the LD series so I just went to the OS site to look at the manual. It is an interesting design. Is this engine for a boat? Do you have some type of RC with the engine? If you do post some pics. I'm curious.
i think it's for cars.. i don't have one, just seen it in a local hs.. i've seen the box, says ld, that's why i've also searched it in the net. the specs says about .6bhp@ 20k rpm.
I believe the ld was used in an onroad car that Kyosho made a few years ago. I always wondered why they didn't design a laydown engine for the buggies to lower the CG. Theat would lower it more than laydown servos.