We have everything here from supersonic MK15.5 pilots to Volkwagen (errr, I mean that *other* German company ... Drager) Powered homebuilt pilots.
The important thing is that they all speak the same language and if you have a question, and it actually has an answer, there's some one here who knows it and will share it with you.
Of course, if more than one person has the answer, then they'll be happy to debate it for you, and if there is no answer, some one will be happy to make one up for you.
Welcome to Rebreather World,
Darlene