Gingery Lathe

[Jw60]

Posted an intro on the homemade and improvised tool thread. This thread will be a deep dive into bringing the lathe to life (on a budget) along with tooling, modifications, and upgrades.

I just brought this home... My Father In Law made this lathe.

Loosely based on the "Gingery Lathe"

It needs a motor, the tailstock fixed, the feed screw is bent, and I would prefer a 3 or 4 jaw chuck, maybe even some collets.

More to come...

 

[53A1]

That's really cool. I remember the Gingery plans back in the day. You would build a smelter, drill press and cuttings tools then a lathe and then you could build all the other tools. Something like that.

 

[Royal-a1]

I'll try to follow this thread. I work in a machine shop. I might be able to pass along stuff we no longer need.

 

[Jw60]

Stopped by harbor freight the other day and got a tapered chuck, tool stock, and some files.

 

[Jw60]

Motor (1/2hp), cord, switch box (extra outets for lights and corded tools) it will be single direction rotation and power feed for a while.

I'm gonna try to place the motor to where I can use a twisted belt for reverse.

 

[Jw60]

Motor is a two speed!

 

[Jw60]

Drive pulleys are being printed:


Notes:
Mainshaft for the headstock is 3/4"
Jack shaft and motor shaft are 5/8"

1725rpm at the motor on high
1140rpm on low

The motor and driven pulleys will both be 2.75" to start (I have hi-lo jeep pump belts to burn)

The jack shaft mainshaft pulley pairs are 3.75 / 1.75"
3.25 / 2.25"
2.25 / 3.25"
and 1.75 / 3.75"

3,696rpm max 532rpm min

 

[Royal-a1]

That's pretty fast. I regularly use speeds around 100 rpm for larger parts or drilling

 

[Howard Eisenhauer]

3,696rpm max 532rpm min

That's pretty fast. I regularly use speeds around 100 rpm for larger parts or drilling

Agreed. I'd be looking to throw a 2.5:1 reduction into the formula someplace or powering with a treadmill motor/controller.

 

[Jw60]

Ok. The smallest item I plan to turn are BrianP's high altitude metering rod. Largest item is a 4.5" OD clamshell puller adapter.

Max swing is aboud 7" OD but the clamshell is pushing the limit on having the tool solidly supported.

It is 10" between the head and live center

 

[Jw60]

That's pretty fast. I regularly use speeds around 100 rpm for larger parts or drilling

Agreed. I'd be looking to throw a 2.5:1 reduction into the formula someplace or powering with a treadmill motor/controller.

Ok the current printed pulley is 4" and the motor pulley is 1.75". This gives me the following speed combinations:
1617rpm and 1068*
1090* and 720rpm
522rpm and 345°
352° and 232rpm
several duplicates... might be ok because the motor speed can change on the fly.

High quality video:
20260420_122430 by Joe the adapter guy, on Flickr

 

[Howard Eisenhauer]

For some odd reason placing appendages into a running lathe powertrain makes me nervous...




Can't quite put my finger on why

 

[Jw60]

For some odd reason placing appendages into a running lathe powertrain makes me nervous...

View attachment 105430


Not sure why

note that I did not wrap my hand inside the belt and pay no attention to the electrical.

I am happy to see how it looks on your screen it takes forever to upload the video and I have to keep the screen awake the entire time.