Need info on gears inside drill transmission.

[Elgin Clock]

Thought THIS may help.It's not for the motor directly but info on part numbers for the drill assembly and a place to order them rather cheaply.

Also, THIS PAGE on FIRST's website may have some usefull specs as well you can look over.

[sanddrag]

I remembered that the powerpoint on disassembling that thing (on the first spec sheet page) shows the gears so I was able to count the teeth. It doesn't look like any of them will work for what I had in mind. But I'm still glad I found out how many teeth they have. Maybe I'll get a new idea.

Does anyone know if it is possible to take a gear with a certain bore, weld the bore closed with filler, and then drill a new bore that is smaller? Would this work? Or instead of welding, what about pressing in a pin and then re-drilling it out?

[Peter Matteson]

I have a whitepaper ready to post on how to adapt the FP to the dril. Had more time than I thought today. However, I need to post the print I made as a tif. This format is disallowed by the Delphi system. If I convert it to a JPG I lose too much resolution for it to be legible. If anyone can help with this please let me know.

[Peter Matteson]

Originally Posted by sanddrag

Does anyone know if it is possible to take a gear with a certain bore, weld the bore closed with filler, and then drill a new bore that is smaller? Would this work? Or instead of welding, what about pressing in a pin and then re-drilling it out?

Possible yes. Advisable no.

We made a stepped adapter shaft to accomplish this. One end presses into the pinnion gear and the other presses over the motor shaft. We have had no problems with this and I suggest it as an alternitive to what you mentioned above.