Wgkenyon2
The Vitronic Soltec, Stratham NH has the  Smart wave which has a hex shaft just ahead and part of the main wave. It add more time and the angle of the  solder is pushed up the holes and the rest of the wave maintains the heat transfer and wetting. We tested the same Engineering test boards with different lead hole ratios, heavy ground and patterns not connected to ground. In every case the Vitronics solder all the pins and at a higherconveyor speed than the competitor.  
On OSP the Kester 220 worked the best.
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> I saw an interesting wave solder machine developed by OSL in France in the 
> '80s that may be of help here. The jaws of the solder wave were connected by a 
> chain drive to the conveyor speed setting. Thus as the conveyor speed was 
> increased, the jaws of the wave opened wider, so the optimum contact time of the 
> parts to be soldered with the solder wave was maintained. 
> Has anyone else seen such a solder wave/conveyor speed interconnect? If so, 
> what has been the experience with lead-free solders? 
> 
> Bill Kenyon 
> Global Centre Consulting 
> 3336 Birmingham Drive 
> Fort Collins, CO 80526 
> Tel: 970.207.9586 Cell: 970.980.6373 
> 
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