Bill,
Welcome to the T-100 Mariah Club!? We are a small group here on groups.io, we had over 200 members on the yahoo group but unfortunately, a lot of the members didn't make the transition to the new group yet.? Historically, this has been a very quite group.? We do not get much e-mail traffic on the group for some reason.? I get more e-mail sent to me directly than what we see here in the forum and that is OK.
To answer your question concerning the prototype T-100D Mariah, it was destroyed in a very bad storm.? The prototype didn't last a hanger door collapsing down on it. so it was a total loss and wasn't rebuilt.? I wish that it had been sent to a museum, it may still be with us if it had.? There are at least two T-100D Mariah's built if not more.? One is in Italy, the other is in Tennessee and possibly one in Japan.? I don't know if any have been flown, it has been a few years ago since I have heard anything and unfortunately, the builders do not stay in touch.? We have plans owners/builders all across the USA, Mexico, Canada, Germany, the UK, Scotland, Ireland, South Africa, Japan, Australia and parts unknown.? The sad part is that we do not hear from our builders.? Which goes to show that the plans are really great and builders need little help from us.? There is very little detail left out and the design is just simple to build. ?
To answer your question about engines, modern engines such as the Hirth F-33, the Simionini Mini 2 Plus and others would be a great choice for Mariah as well as the original Cuyuna 215.? If you can get a NOS Rotax 277, that would be a very good choice as well.? We can provide rebuilt, new and NOS 277 engines if you are interested.? Also, the Kawasaki 340 would be a great little engine to use as well and we can provide this engine too.
If you are interested in a conventional "airplane" design, we also own the Frank Griffith designed CA-2 Ultralight.? This is a great option if you want to work with Aluminum instead of wood.? Both are terrific designs and would draw a crowd at any airport or fly-in.
Ride the Wind!
Ken Adams, Jr.
T-100D, CA-2, T-40, T-40A, T-40AS design owner