tapers

Amount of taper: 0.068" Taper per inch of length: 0.0432-

I think you have a #1 Morse taper. I measured one of mine: length of taper 1.850" large diameter 0.500" small diameter 0.420" amount of taper: 0.080" taper per inch of length: 0.0432+

In other words, the degree of taper on yours is essentially the same as the degree of taper on mine. Yours has a bit more at the narrow end than mine, and a bit less at the fat end, and it's shorter overall, but the angles are the same. I *know* mine is a #1 Morse. Sounds to me like yours is too.

Beg , buy, borrow or steal a MT1 tapered fitment. Clean male & female tapers. Chalk or ink the male taper. insert into spindle and twist once. remove straight out. If the coating is smeared evenly, that's your taper. In shorter words, fit , instead of measure.

Turn to Safety, Arch Fortiter

"Arch" wrote: (clip) In shorter words, fit , instead of measure. ^^^^^^^^^^^^^^ Arch, that is much easier to do now that Doug has spoken.

Right Leo, ....and even easier if there is a machinist's handbook on the coffee table.;) I shudda suggested getting MT1 & MT2 to try, before Doug spoke.

Turn to Safety, Arch Fortiter

Thanks for the info. I will borrow a MT sleeve and check it against that.

I also have a revolving centre, again with strange dimensions (length). Is it possible that this may be a #2MT. Again I will try and borrow a suitable sleeve to try it.

The dimensions are:

Length 50mm (1.968") Large diameter 17mm (0.669") Small diameter 14.5mm (0.571")

Thanks again for your help.

Regards, T

Taper = 0.669 - 0.571 = 0.098" Taper per inch of length = 0.098 / 1.968 = 0.0498 Using the metric figures, taper per mm comes out at exactly 0.05 (2.5mm taper along 50 mm length).

I think this is not a #2 MT. Here are my measurements on a drive center that came with my #2 MT lathe:

Length 2.500 Large dia: 0.700" Small dia: 0.579" Taper = 0.700 - 0.579 = 0.121" Taper per inch of length = 0.121 / 2.500 = 0.484

here are the 'theoretical' dimensions for a Morse #2 taper, may be of some help

CBII

----------------------------------------------------------------------------

- Taper Name Large Taper/ Taper/ Angle Small Length End Foot Inch From End Center

------------------------------------------------------------------------- #2 Morse 0.7000 .5994 . 0500 1.4307 0.5720 2.56

-------------------------------------------------------------------

Oops, decimal point in the wrong place. Should be 0.0484. Sorry.

Where did you find this?

Hmmm.... guess mine wasn't made exactly to spec. :-)

I stole the info off the Logan lathe site tho it doesn't seem to be there anymore

some not-so-quick Goolging yielded the following:

concise layout of all the Morse Tapers with a good diagram from a Brit woodturner a chart with all the information any sane person would ever want to know about Morse Tapers from the folks at LittleMachineShop - parts for the dreaded Chinese metal mini lathe Morse Taper info - with Jacobs Tapers as well also has data for Brown&Sharpe and Jarno

Let's face it. If its a wood lathe, then the chances of it being a Morse Taper is in the vicinity of 99 out of a 100. Rather than 'cuss and discuss' it, why not just try a MT and see if it works? Dan

Thanks to all for your help. It turns out that I have a #1 &#2 Morse taper. Though these parts are somewhat shorter than normal the tapers are correct. I was able to borrow sleeves and verify this.

Thanks once again and Merry Christmas to all.

Regards, T.