I noticed that the unmarked pistons were n°1 also, the tiny mark was a bit damaged probably by taking the piston off with a knife. So then it's normal that these have the same hole size :-)
But still, 3 and 4 are also identical.
A pity that losi pistons don't fit, their shaft diameter is a bit larger than the yokomo ones.
The n°3 piston holes are identical to losi red pistons. So with the correct drill it is easy to make orange and blue, but not black (smaller holes).
|