The BB axle of Strida 1 can be modified to adapt differnt crank arms. 
In order to use the magnetic wheel clip system on Strida 1, the axles and wheels must be replaced with those parts from Strida 3.
[url]Strida "2" owner needs our help! on Bikeforums - #4 by Human_Amp]
The rear axle and rear wheel of Strida 3 can be installed on the frame of Strida 1 without problem.
However, you have to “create” a completely new style front axle in order to install the front wheel of Strida 3 onto the “fork” of Strida 1.
Strida 1 successfully installed with the wheels of Strida 3 
It is better to spray the grey wheels into black to match the colour pattern of Strida 1 
