i like trains - perfect loop
Логика первый закон Закон тождества
Fast endless Bi-directional spiral with an ho scale train ( side view )
Fast endless Bi-directional spiral with an ho scale train ( side view )
MTH HO scale American Freedom Train GS4 coming down the line.
The Double bi-directional figure 8 spiral with Ho scale using KNEX and Bachmann EZ track