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More progress on the 48XX


Focalplane

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I seem to be spending a lot of time getting nowhere slowly these days. But at least I have made some more progress on the Comet chassis.

 

I have drilled holes for the Gibson plunger pickups and fitted six of them, including two against the trailing axle wheels. Fitting the nylon housing was difficult on the trailing wheels because of the outer frame, but at least I drilled the holes before soldering the outer frame in place.

 

It seems the difficult part of fitting Gibson plungers is when it comes to soldering a thin wire to the bent "tail" of the brass plunger. Jim McGeown of Connoisseur Models says even 7mm plunger pickups need careful soldering, so I approached this job with some trepidation. However it went well as I decided to reduce the risk of melting the nylon (and fusing the plunger inside to it) by using low melt solder.

 

On the downside, however, I managed to lose a grub screw from the gearbox and so cannot test the completed motion. Wizard's Andrew Hartshorne sells these grub screws so I intend to order a few "just in case". By the way, the grub screws are not yet listed on Wizard's web site.

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