SilencerTalk

Sound Suppressor Discussion
It is currently Wed Dec 19, 2018 1:09 am

All times are UTC-04:00




Post new topic  Reply to topic  [ 40 posts ]  Go to page Previous 1 2
Author Message
PostPosted: Thu Nov 22, 2018 2:55 pm 
Offline
Senior Silent Operator

Joined: Thu Aug 29, 2013 6:56 pm
Posts: 110
Location: South South Texas
3013happyshop is who I purchased it from.
A buddy from work bought one also, they told him shipping would take 2-3weeks but our orders arrived same day. He purchased it from bigbigworld700 same for price.

30-45 days till new shipment arrives

_________________
NRA Life Member


Top
   
BulletFlight for Android
PostPosted: Fri Nov 23, 2018 3:22 pm 
Offline
Member

Joined: Tue Nov 20, 2018 6:41 pm
Posts: 33
Thanks. I'll keep an eye on their stores.


Top
   
PostPosted: Sun Dec 02, 2018 2:51 am 
Offline
Member

Joined: Tue Nov 20, 2018 6:41 pm
Posts: 33
Hard_ware, I really hope you don't mind that I keep posting in your thread.

EDIT: Wrong lathe.


Last edited by #40Fan on Mon Dec 03, 2018 1:57 am, edited 1 time in total.

Top
   
PostPosted: Sun Dec 02, 2018 4:17 pm 
Offline
Senior Silent Operator

Joined: Thu Aug 29, 2013 6:56 pm
Posts: 110
Location: South South Texas
No problem.
That’s a 220v 50hz, not sure if it’s an issue as they have a dc motor .

Man I am really enjoying my 8x16.
You will have to do some mods but for such a small lathe it works great.
Drilled holes to adjust compound without unscrewing it.
Under 10 minutes turning.
Currently working on a 22lr form1 build.
Image
Image
Image

_________________
NRA Life Member


Top
   
PostPosted: Sun Dec 02, 2018 7:21 pm 
Offline
Member

Joined: Tue Nov 20, 2018 6:41 pm
Posts: 33
Ah, didn't notice the specs on the motor. Was really looking at the spindle bore.

Your parts are looking good!

You should start a lathe upgrade thread showing everything you have done. I'd very interested in seeing everything.


Top
   
PostPosted: Mon Dec 03, 2018 2:24 am 
Offline
Member

Joined: Tue Nov 20, 2018 6:41 pm
Posts: 33
Ok, here we go. Instead of searching eBay for the TS-210, I used bing and found a link to an eBay seller. Out of stock though. Different seller than the other two listed.

TS-210

Using the gears it shows it comes with and an online calculator, it shows you can get this out of them.

Image
Image
Image
Image

If you get rid of the 33 and add in a 34, you get this.

Image

Website I used.

Change Gear

I used "Other Lathe" and inputted the 2mm lead screw and follow gears available.

24,30,33,40,50,52,60,66,72,80,84

Does this look right?


Top
   
PostPosted: Mon Dec 03, 2018 8:19 am 
Offline
Senior Silent Operator

Joined: Thu Aug 29, 2013 6:56 pm
Posts: 110
Location: South South Texas
To use a calculator you need to have a 56 tooth starting gear.
The ratio will be 56/c x d/e, a and f are not used but a small gear needs to fill the space. The b gear (idler) won’t matter as the size you need will be dictated by the gap you need to fill between gear c and the 56 tooth spindle gear.
Image
http://bilar.co.uk/cgi-bin/change-gear-calculator.pl

Use a 2mm lead screw.
Only results with a 56t starting gear can be used, so look for that in the results after you run it.
This has worked best to find new gear combos for me.
Keep in mind just cause you have a combo doesn’t mean it will fit physically.
Imperial threads are only needed to match a barrel (or some other part you need to match), all other threads needed can be cut metric. Like .5mm close to 50tpi, .75mm ~38tpi , 1mm~ 25tpi, 1.5mm ~19tpi , 2mm ~ 12tpi. Just line up start point and lock the half nut and away you go.
If cutting mainly Imperial threads it’s best to change the leadscrew as reversing or lining up starting marks on headstock and leadscrew are a PIA vs just engaging the halfnuts anytime.

_________________
NRA Life Member


Top
   
PostPosted: Tue Dec 04, 2018 12:37 am 
Offline
Member

Joined: Tue Nov 20, 2018 6:41 pm
Posts: 33
I didn't know that the spindle gear was included in the gear change calculations.

When using the "other lathe" in the link I posted and inputting the gears I have available for my mini lathe, I end up with the same answer.

My main reason for picking up a bigger lathe is so I can thread all of my barrels. If I can find an imperial lead screw and the half nut to go with it, it'll be on the top of my list of things to do. Maybe....seeing how the gear change calculator shows how close it can get with the supplied gears. Right now, it is just a pipe dream until I can find one.


Top
   
PostPosted: Tue Dec 04, 2018 7:19 am 
Offline
Senior Silent Operator

Joined: Thu Aug 29, 2013 6:56 pm
Posts: 110
Location: South South Texas
The mini lathe has a gear in position A linked thru an idler gear to spindle.
This lets you change A/B ratio easy, you can also reverse the lead screw rotation as well with a lever to engage a forward or reverse idler gear.
The 8x16 doesn’t have this option, lead screw follows the spindle.
May be possible to add a gear to reverse lead screw for left hand threads but I haven’t tried it yet.

28.015 is 28tpi. Keep in mind .015 is not 15 thousands.
It’s .015 of width of 1 thread, slop and improper depth of cut can cause out of spec threads way more then the .015 of a single thread due to gears.

More experienced lathe operators will know more and can pass on if this is an issue, but that’s how I see it.

_________________
NRA Life Member


Top
   
PostPosted: Wed Dec 05, 2018 10:44 pm 
Offline
Silent But Deadly

Joined: Mon Mar 29, 2010 11:37 pm
Posts: 3134
Hard_ware wrote:
The mini lathe has a gear in position A linked thru an idler gear to spindle.
This lets you change A/B ratio easy, you can also reverse the lead screw rotation as well with a lever to engage a forward or reverse idler gear.
The 8x16 doesn’t have this option, lead screw follows the spindle.
May be possible to add a gear to reverse lead screw for left hand threads but I haven’t tried it yet.

28.015 is 28tpi. Keep in mind .015 is not 15 thousands.
It’s .015 of width of 1 thread, slop and improper depth of cut can cause out of spec threads way more then the .015 of a single thread due to gears.

More experienced lathe operators will know more and can pass on if this is an issue, but that’s how I see it.


For old lathes such as Southbends or Atlas 618, etc, a reverse gear set with
handle is supplied. Allows for left hand threading ...start from head stock to tail stock.

e.g.,SOUTH BEND LATHE 9 INCH REVERSE GEAR TUMBLER WITH GEARS AND LOCK BOLT
<< https://www.ebay.com/itm/SOUTH-BEND-LAT ... :rk:4:pf:0 >>


Also most useful for winding springs. At your leisure lots of YouTube on spring winding.
One of best is winding a 'double-mouse-trap' spring for an old WW2 piece.

Tubalcain YouTube instructional videos a good set of tutorials.

Welcome to Metal-Mania ... tool junkies anonymous ... 'Toad from 'Wind In The Willows
wide eyed excitement. Someone once said that tool companies could give the lathes
away because the tools that 'you must have' every time a new MSC or
McMaster-Carr catalog is delivered will bring in revenue 10 times the cost of lathe.

Happy chip making.


Top
   
PostPosted: Thu Dec 06, 2018 10:16 am 
Offline
Silent But Deadly

Joined: Mon Mar 29, 2010 11:37 pm
Posts: 3134
I ran across a clear presentation on the geometry of a tumbler gear
reversing mechanism operation on old lathes.

<< http://www.navodayaengg.in/wp-content/u ... ture15.pdf >>

I marvel at the ingenuity of the first person over one hundred years ago
who imagined a function he wanted, looked at the lathe operation, and
then with intuitive sense of analytic geometry configured 3 gears to
perform action.


Top
   
PostPosted: Thu Dec 06, 2018 12:24 pm 
Offline
Senior Silent Operator

Joined: Thu Aug 29, 2013 6:56 pm
Posts: 110
Location: South South Texas
Perfect!
That will reverse leadscrew by adding a gear if needed.
Since the gear on the top shaft is just an idler gear the dual gear setup could be made to fit.
The amount of teeth won’t matter as it’s a tooth per tooth rotation 1:1.
Only ratio of the first and last gear in a sequence matter.
Even provides an easy way to disconnect spindle from lead screw without pivoting gear assembly out of contact with spindle.

Thanks!

_________________
NRA Life Member


Top
   
PostPosted: Thu Dec 06, 2018 2:41 pm 
Offline
Member

Joined: Tue Nov 20, 2018 6:41 pm
Posts: 33
I had stumbled across this last night as well.

http://andysmachines.weebly.com/leadscrew-reverse.html


Top
   
PostPosted: Thu Dec 06, 2018 7:45 pm 
Offline
Senior Silent Operator

Joined: Thu Aug 29, 2013 6:56 pm
Posts: 110
Location: South South Texas
Nice!

Here is a program that can be setup for most lathes.
The changejs.zip has a program called change wheels.
You can add your model of lathe and the gears you have or a range you want to check.
http://www.myvirtualnetwork.com/mklotz/
I added the mx-210v. The gear pic is reversed side to side.
Image

Added a 27T gear accuracy for imperial very improved.
.0001mm off I don’t think that can be measured with low end calipers.
When cutting imperial it takes 10” of travel to return to zero marks 254mm.
Just an FYI if disengaging leadscrew.
Image

_________________
NRA Life Member


Top
   
PostPosted: Thu Dec 13, 2018 12:07 am 
Offline
Member

Joined: Tue Nov 20, 2018 6:41 pm
Posts: 33
If anyone is looking for one of these with a 29.5" center....

https://www.ebay.com/itm/Techtongda-750 ... :rk:4:pf:0


Top
   
Display posts from previous:  Sort by  
Post new topic  Reply to topic  [ 40 posts ]  Go to page Previous 1 2

All times are UTC-04:00


Who is online

Users browsing this forum: 1rflman, partsguy22, Witchgrass and 62 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Powered by phpBB® Forum Software © phpBB Limited
[ GZIP: Off | Load: 0.57 ]