Hi Ian
It's a racing prop and will use lots of power hence the heat.
As you have a cabin cruiser it does not need such a coarse pitch prop and changing to a prop with a lesser pitch will improve your running time and produce less heat. Performance will depend on the chosen prop but should not be much different from what you already experience.
As you already have a water cooler inlet and outlet you could just wrap some copper tube round the motor and connect with silicon tubing to keep the heat down
Dave

Many thanks Dave. I'll see what I can do and let you know the result.
Ian

Nice job performs well.

Looks an absolute hooligan👍

I like it! Nice boat which handles well.

John.

very nice boat and yes it is difficult to video and sail at the same time ! try to get someone else to steer while you video !! using a tripod is best. Les Breame

Thanks for your feedback.
I was using a monopod so I could pan and follow the model. I agree the tripod works much better. All my fellow sailors were otherwise engaged unfortunately.
Dave

Hi Edward, its a fine balancing act of electrolysis to hydroide gas, compression then ignition but utillising vacuum formation as an assisting force to the power stroke so effectively making it a one stroke which sounds odd.still in development ive tried turbine,oscillator pistons and hydraulic recoil as end movers but the best seems to be the straight reciprocator. its scary,how the hell can they tax water??? cheers Neil.

Hi Awesome engine, You better get it patented!

Mobile Marine produce a kit and Model Boats did an article http://www.modelboats.co.uk/news/article/ayton-cross/473/.
The model looks authentic. Any chance of on water shots
Dave

If you research who the original builders were, then the plans would be most likely be available from the archives of the builders. in most cases where vessels were built in Scotland for instance, the plans, if available would be held either by the Glasgow University Archives or the Scottish Archives. Although there are costs involved in obtaining copies of the originals, it is well worth it in the long run so that the details is correct. The model looks great.

That's different, are you going to still use the clockwork motor. How does the rudder work. I see it has a wire from it to inside the boat. Also what is the nipple on the side sponson for?

yes still clockwork,The best improvements have been made by lightening the motor, drilling holes in everything and replacing a side plate with one made of alloy.It is just a nut on the sponson, they are adjustable for incidence.It will now plane on the sponsons "unsticking" the hull.The original was built when I was 13/14,the motor came from the family gramophone when my dad converted it to autochanger/amplifier,the wood came from the woodshed but I was short of plywood and realised the back of my wardrobe was plywood and was hidden behind clothes so when my parents were out I cut the bits I needed from it!,my mates christened it "the wardrobe".Performance is down to propeller choice and is a compromise between speed and runtime.I took it to a boating pond in a nearby town when my wife needed to visit it and a council "jobsworth" told me I was not allowed to sail it,"only yachts and electric boats on here sir"no amount of reasoning would make him change his mind and he escorted me out of the park!.

Awesome looking boat, thanks for sharing your pics, she is beautiful 👍

Any internal photos?