Tips & Tricks

Philips screws on Bearing holders
Keying the metal gear on to the motor spindle

Keying the metal gear on to the motor spindle

In Hercules assembly instructions chapter 6. Motor Assembly Paul writes about the importance  of keying the metal gears are keyed on to the motor spindle.
 

Drawing by RoR
On other homepages I have seen that people are breaking a lot of drills trying to lock the gear wheel.

I decided to do a part of the process in reverse order.

First I cut of the motor spindle as describe in chapter 6.

Then I "glued" the metal gears on to  the motor spindle with Locktite 601.


Photo by RoR
Then I set up a fixture in the pillar drill using a drill vice to hold the motor and  clamp to lock the position of the gear & motor spindle.

I started drilling with a center drill, because it is more robust than a ordinary drill.

After drilling a millimeter or two changed to a 1.5 mm HS drill, and used a small drop of cooling fluid.

I put a small drop of Locktite and inserted a piece hardened steal into the hole.

Philips screws on Bearing holders

The bearing holders are made up from a sandwich of 4 layers of steal bolted together with 3mm screws 6 nyloc nuts. As philips screws are not seen on railroad trucks in real life I decide to cover the holes before the final painting.

Bearing holders assembly with
acrylic sealant covering the holes
Acrylic sealant is cut away After painting it looks as if it had been riverted.

 

Copyright © 2000-2009 by Steen Rudberg.
Last Updated: 29. december 2009 13:18:36 +0100.