Quote:
Originally Posted by Hurband
If you connect (stack) the 2 identical gearsets by lets say by soldering them you will find that by some axial endplay adjustement these will fit nicely and you will have a 31.2:1 gearbox.
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We tried soldering two of the gearsets together, but we couldn't get the solder to stick. Tried 60/40 rosin core and silver bearing acid core. Do you need to use a special flux or do some special surface prep to be able to solder them together?