Re: Any feedback on size of a boat and size of the engine ?
Answers in blue on your message
> How was your summer ? Not funny report about a trip in the US this
> summer ? Summer in Greece and French Riviera. No funny report.
> I don't think that I will need a 40 mm pipe to do the engine. I will
> probably use a 8 mm pipe or what I will find here which is similar. I
> found some cheap balsa sheet and strip this afternoon so I will built
> the hull as light as possible, I will also use some mini servo and
> receiver and some "light" battery. For the heat source, I will try
> some "methanol" gel found in a hobby shope here and also probably I
> will try some alcool. Once optimized, with 2 pipes of ID 8mm you should get a thrust of 80mN.
> I was very interesting this weekend by one of your article concerning
> the reduction of the exhaust pipe to get more propultion. I am not
> specialist in thermodynamic (even if I major in chemical engeniring)
> but do you think that I can use a 2 inch 6 mm exhaust pipe link to my
> 8 mm pipe without any problem. Though it could improve slightly the thrust, the best way is not to use a cylindrical nozzle, but a conical one.
> Well first of I need as much information as possible to figure out
> what I am going to do and then I will try to build the hull. My major
> problem for the moment is to get an heavy boat which can not be run by
> the pop pop. I like such a project. I had a 45 foot sail boat for 24 years. Now I have only a small Norwegian boat...and less worries.
> Have a nice day. Same to you. For me, today should be mainly used to test a 8 pipe engine. I started this morning. It works fine but I expect to increase the thrust.