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Motor Focus Applied to Vixen Refractor
Ken, thanks for your comment. You have achieved a much neater packaging, using the axial motor, nicely done. The right-angle geared motor mounts more neatly on a refractor than my Mak example, here it one on an FL80.
Note that I made up a toothed belt to fit snugly over the focus knob, with the teeth outwards, mating with the drive belt, because there wasnt enough grip on the hard plastic focus knob. The alternative is to take the knob off, and mount a toothed pulley on the 8.5mm focuser shaft. A 60-tooth wheel is about $12 on eBay, and I have one on order. The 6mm mounting hole on the gear wheel will need drilling out, but there is plenty of material in the hub of the larger gear wheels (unlike the smaller one on the motor shaft). Ed
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