Testing 2 Cox 0,8 cc engines

last part of the vidéo : I never understood why people are filming in portrait mode !!!!! They must have a vertical TV in their room at home !!!!
For the rest, both engine are runing fine according to their ages.
one will be put in a Coxy.
Self made starter with a Mabuchi 480 runing in 2S, totaly armeless for these tiny engines. Battery can be inside or outside (haven'f found yet the right size battery to get in)