21 century lathe, DIY motor?
- Thread starter DngBat7
- Start date
DngBat7
Silver $$ Contributor
Your right. I was hoping for something mounted tho, With on off switch
ClassCat
Unlimited
Hi Dan;
I have different motor drives that i use, and i don't know anyone that has DIY on that unit. Saw a video of the motorized version and was ALMOST impressed. The only thing i did not like was the motor and cutter appeared to be off center. If you attempt this take into consideration how critical that will be to a concentric cut.
I have different motor drives that i use, and i don't know anyone that has DIY on that unit. Saw a video of the motorized version and was ALMOST impressed. The only thing i did not like was the motor and cutter appeared to be off center. If you attempt this take into consideration how critical that will be to a concentric cut.
DngBat7
Silver $$ Contributor
I have never used a 21 century lathe yet. Was about to buy. If I do just use a drill, Will it be hard to keep the brass concentric? Or is it gonna wobble?
ClassCat
Unlimited
It's not a wobble, The drill and cutter appear to be off center. Without having the case that was cut in hand for a measurement i could not tell if it was not concentric. You see the pop up adds on these pages. Click on the one for 21 Century and find the video for the motorized cutter. Notice that the cutter and motor are off center when the case is placed on the mandrel.
Yes....I made my own case turning lathe using a right angle gear motor, 170 RPM/ 1/8hp AC. IIRC it was north of $250 for the motor and capacitor. All said and done it would have been cheaper to buy a motorized 21st Century. But...that has been a recurring pattern in my life...hmmmm.
http://www.1stopmotorhouse.com/34R-5R_and_42R-5L_AC_RT_Angle_GM_Series.html
21shooter
Site $$ Sponsor
Hi, This is the powered neck turning lathe in question...http://www.xxicsi.com/powered-neck-turning-lathe2.html
There is NOT any misalignment Issues. The motor spindle and the arbor center/line are the same in both axis .The shell-holder is on a ball joint, allowing alignment from the case head to the case mouth on the turning arbor..John
There is NOT any misalignment Issues. The motor spindle and the arbor center/line are the same in both axis .The shell-holder is on a ball joint, allowing alignment from the case head to the case mouth on the turning arbor..John
ClassCat
Unlimited
Hi John;
I was not aware that there was a Ball Joint involved. It may be beneficial for you to state that in the video so someone like me does not make an ASSumption like that in the future. How do the cases measure ? What is the RPM on that motor ?
DngBat7
Silver $$ Contributor
Thank you John. I will check it out
ClassCat
Unlimited
Hi John; Thanks for your response.
Do you have different chucks available ? IE: PPC , 300WSM, or are they generic ?
I am pretty comfortable where i am now, but i like the speed of your unit. It takes me about 6 minutes to cut and prep 1 case, but i do achieve the same tolerances as you.
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21shooter
Site $$ Sponsor
Hi, Yes . John
LA50SHOOTER
Sworn To Protect The Constitution.
I purchased one of Johns 50 caliber Lathes back when they first came out to turn 50 BMG & BMG Improved brass as well as 416 Barrett.
The Lathe is a very precision method to accomplish the neck turning on these big cases. - I use a Milwaukee battery powered driver that will run 0-400 RPM and has a lot of torque to offer. - The biggest thing I found to keep in mind is to Not take to much of a cut at one time. I've found that multiple passes may be required depending on the starting thickness & where your trying to end up.
-Ron-
The Lathe is a very precision method to accomplish the neck turning on these big cases. - I use a Milwaukee battery powered driver that will run 0-400 RPM and has a lot of torque to offer. - The biggest thing I found to keep in mind is to Not take to much of a cut at one time. I've found that multiple passes may be required depending on the starting thickness & where your trying to end up.
-Ron-
I have built a DIY bearing tracked motor unit that is perfectly lined up and works perfect with the 21st Turning lathe. The parts are about 100.00 total, if that, including the motor. Harbor freight and EBay online order for the sealed bearing track required. The motor is on track and glides easily in same plane as the shaft to the lathe. I will post photos and details when I can(my retired neighbor loves it and trims my 223 and 6mm PPC for me on it in addn to his! I have to go get it from him to take photos).
jghoghunter
Gold $$ Contributor
I would like to see this. Plus its great that you get someone else to do your cases!
How great is that.
Dan. This is what I put together with an RCBS case trimmer motor that I bought from Midsouth back in 2013. Not that hard to set up and works like a charm.
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