The Engine is a 4035, delivered some years ago by Hobbyking. The original shaftlenght was 36 or 38 mm.
So if that motormount in your picture is from an LOGO 700 (I don´t own one), it cant´t be a original shaft.
When Mikado says, that you need a 55 mm shaft, I would presume, that 50 mm is too short.
How comes it, that your 4525 has a 50 mm shaft?
Gruß, Wolfram
PS: Found this picture:
Picture in the thread: 4035
Edited 1 time(s). Last edit at 09/25/2016 10:31AM by Wolfram.