Forgot to say, that there is another Diehl variant, 513, this uses a "window" for the sprocket teeth. The whole idea was to decrease the forces at play on the end connector. On this version, the end connector serves to join the track, nothing more. There is a small alignment pin that sticks out of the main pin at a 90°C angle in the slot where the end connector bolt thread can be seen.
The pads are longer and do not have the metal "fin" the full length the way
the 213 pad does. Fin is only at each end of the pad.
Will just see if I can find a photo.
I have not heard of Canada using 513.
Regards
Doug
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dgrev@iinet.net.au
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