Today I have to solder the large gears with the hard drive axles first.
For this I draw to the first position of the gears on the axles and imagine a Caliper firmly so that I can later adjust the exact position during soldering.
Between these two lines I sharpen the axes in such a way that the grooves run along the axis and thus also results in a set of teeth to the rotation direction. That's what I do with my favorite tool, a small belt sander.
So that the brazing area also connects the gears to the axles I file into the bore of multiple channels into which the solder can be spread by capillary action with a file.
Then brush the parts at the contact points with flux, solder and stuck together.
After quenching in water I edit the workpieces to the lathe and plasters them. The teeth I work with a stainless steel brush with the buildup I remove the coverings and fluxes.
The last step is again a small heat treatment, notably, the axes are not sensitive to shock. So I give the parts again for one hour at 230 ° C in the oven.
The axes are then ready for installation. But before I fit more to the drive wheels.
But still not right with the chain.
With late drive to set the track is easiest. One only has an aluminum bar stuck in the middle of the rollers.
Since the drive wheels must still 3.8 mm closer to the tub I edit it again on my big lathe.
And it must look like then.
Tomorrow I'm doing the countershaft to then.