Originally Posted by
Roelof
The existence of Novarossi .28 models w/o a pull starter proves it is possible. In the past I have made a .28 backplate.
Basically all Novarossi crankcases and so all backplates are the same, If you have a crank case with a 25.8 bearing you can get the backplate of a .21 engine, 2 things you have to do. enlarge the flat spot that makes space for the piston because the larger diameter of it and you have to grind off the pull start pin from the crankshaft
Well that isn't that simple. It would be easy to assume that which was my first idea but that's why I ended up asking. I wasn't sure if all 28 were the same spec case and surely wouldnt be going out and buying 1 only to come to find that a backplate wont fit
