Gannet 15cc engine
HI Graham
Congrats on buying the Gannet. Saw it on Ebay, second one in a week but yours far better of the two
I have one in a 48" offshore racer "Screwdriver" hull. Mine is quite rare as it has a built in magneto on the back end , so no batteries required for starting or running. in a large crashtender hull it will plane like a dream.
As some of the other posts mention, not ultra fast but bags of torque so nothing stops it.
Think some of the posts go a bit over the top re heat etc, don't know if they have ever run a Gannet, but you simply need a reasonable water cooling flow commensurate with a 15cc engine of any type
One operating tip, if you wear rings of any kind, DON'T touch them on the top of the plug when adjusting the engine. it will stop Immediately, but this won't worry you much as you will be shaking your hand about wondering what happened! The HT side if the gannet is quite powerful.
I also have a second engine , same spec as yours bought off a guy years ago but never used as couldn't be bothered to chase around trying to find a minI coil which is also required as part of the set up.
When I bought mine secondhand back in the early 70's, it went back to the makers who were still just trading then for a check over. They supplied me with an owners manual which I still have somewhere. I will try and find it and copy it for you. if you supply an address to me via PM, I will post it to you. it covers details of the battery required, coil etc
cheers
Ian