FiveO..... bubbagates gives some great advise!!
I have the UCD 46/YS 63... This plane is so easy to fly and land..
It'll float forever... Well almost:-) And because of that it lands
easy.... And I for one think the UCD with a forward CG and low
rates will be a great trainer.... But..... Only you know your skills
3D type planes are built "light" which means they "Will" not take
much if any abuse... So landing "lightly" on it's wheels is a must!
I have not heard of any firewall problems unless your going to
really over power it... But the landing gear "will" need to be
reinforced.. If not you will rip it out... I just added some C.A. on
the 1/4 angled bulsa and epoxied to the four corners above the
L.G. block and it has worked great for me.... Also some has
reported stab. failures, So a few people(me) added tail wires for the
added protection piece of mind.
A few people say the 46 size flies better that the 60... Visit the
UCD thread's.. Ton's of tips and info there....