Hi Jet flash (sorry don't know your name nor who you are)

I see that it is your first post here, so before anything else, would like to welcome you.

I have nothing against manuals, in fact when I started with jets, I used to read every bit of available info, both in manuals and internet. Still do.

Since you are my country fellow, you know that when I started in jets some years ago, there were no fellow members to help and share experience, so I had to do a lot of reading, research and mainly this was made in RCU and reading instruction manuals. I never get tired to thank RCU for the help most people gave me. That allowed me to have many sucessfull flights in these years, eventhough I have started with a though plane (F18F), it was possible to do it[8D].

Solenoid valves are normally closed (NC), it means that they only mechanicaly open under voltage. If there is no voltage (reverse polarirty, power off, etc), they sure don't open.

Nevertheless, they can also jam and get stuck in either position (opened or closed). This is a mechanical issue. They don't do it whenever they want, but whenever there is a reason to happen. This may happen more often in gas valves because there is no lubrication, temperature differences (gas is very cold and dry) or dirt. To solve this, a drop of silicone oil and some tapping with your fingers usually solves the problem.

If you fly or planning to fly jets, be free to contact me.

Also look at this: http://coimbrajets2011.blogspot.com/

Regards

Nuno