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3/4" x 16 TPI on Oneway 1224

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Dean Moldenhauer

Joined
Mar 11, 2019
Messages
11
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5
Location
Mount Vernon, WA
Hi, all.
I have a Oneway 1224 on order and one of the things I've noticed is that the outboard spindle is 3/4" x 16 TPI - as opposed to the 1" x 8 TPI on the inboard side. I have seen this mentioned before, but I don't remember there being an explanation and I can't find that forum thread again.
It doesn't seem like a big deal since that lathe isn't really intended for outboard turning (to my knowledge), but I'm wondering why the different size. I think Oneway makes mention of a vacuum system in their literature... is that why they did this? Is 3/4" x 16 TPI the common size for vacuum systems? It seems that a company like Oneway must have a very sound reason for making the outboard spindle that spec.

Forgive my newbie-ness. The answer to this may be a well-known fact... just not by me. :D

Thanks, Dean
 
The 1224 is a nice lathe... you will find it is a pleasure to turn on.

I am not sure why ONEWAY did this. I’m sure they have a reason since they don’t do things by chance.

It is fairly common to find a smaller thread on the handwheel side of the spindle on lathes.
And sometimes a left hand thread especially if the lathe does not reverse.

The ONEWAY vacuum adapters use a stronghold adapter insert and they come Several pages of common lathe thread sizes.

The ONEWAY 2036 was the first lathe I saw with a right hand thread on the outboard side of the spindle.
ONEWAY
 
Thanks, Hockenbery. I am excited to get the lathe in the shop. I don't expect I will have any kind of immediate need for the outboard spindle, but I was curious about why Oneway designed this lathe this way. Since Oneway builds these to order, I was kind of wondering if it was worth it, or even possible, to ask them to put some other spindle size on the outboard side. I expect that that part of their design is probably pretty set in stone, but who knows. Besides, I could probably always get an adapter if I really needed one. I haven't read a lot of complaints about it, so I doubt it's anything worth asking them to change. I'm sure I will be perfectly happy with it the way it is.

Thanks for the input.

Dean
 
Sam Angelo gives good review of lathe....he just mentions the outboard and the different tpi....does not go into it use other than its there....he does highlight the other features.....i just googled the lathe and different turners u tube came up.
 
I think I would feel safer using faceplate outboard than a chuck just because cannot use tail stock on outboard turning. Nobody said if outboard tool rest is secured to lathe or free standing.
 
My guess without actually seeing an exploded parts diagram is that the smaller size is necessary because of the headstock construction and to facilitate belt removal and replacement. Also, there needs to be some means of tweaking axial play of the spindle and at the same time allow the pulley to be removed so that the spindle can be removed for maintenance. All of these factors place constraints on the design ... the outboard thread size being one of them. Or, it might just be Oneway being one way. :)
 
charlie knighton said:
Sam Angelo gives good review of lathe....he just mentions the outboard and the different tpi....does not go into it use other than its there....he does highlight the other features.....i just googled the lathe and different turners u tube came up.
Click to expand...

Yeah, I’ve watched the WyomingWoodturners videos a number of times... in particular the ones featuring the 1224. The other guy that I’ve seen is the Canadian guy who speaks French (in most of his videos) and seems to have made at least one of his videos in response to a request from Sam Angelo. There aren’t really that many YouTube videos on that lathe and no explanation of the logic behind the outboard thread size.

Like I said, I really was just curious, it doesn’t make any difference to me after I gave it a little thought. The inboard side is going to be the business end for some time.

As far as turning on the outboard, I know there is an extension for the 1224, but I have seen nothing implying that it can be mounted on the outboard side similar to the Laguna Revo 12|16 so I’m pretty sure it’s mostly intended for the vacuum chuck apparatus... at least that’s really all I could find reference to.

I actually thought about calling them just to ask if, since each one is made to order, it would be possible to put a different size on the outboard, but, a)I didn’t want to sound stupid and b) I didn’t want to waste their time asking about a mod I probably wasn’t going to ask them to make. It would have been interesting to find out directly from them why they do it that way... maybe I will call them. :D.

Thanks everybody,

Dean
 
Those (2) sizes of thread pitches would be the most common ones for the midi size lathes which would provide the greatest amount of versatility for anyone that has a selection of turning accessories for a wood lathe in the domestic market.
 
Get a small faceplate for that outboard spindle and mount a nice piece of hardwood to turn a handwheel. That's a very useful accessory that I leave in place and use all the time.
 
Tom Albrecht said:
Ah, didn’t know that. I know that my big Oneway did not.
Click to expand...
Sherry uses a 10” faceplate for a handwheel on the outboard side of her 2416.

The big oneways are designed to turn outboard and their various bed options support that extremely well. You can even add a tailstock on the outboard side.
Want a short bed for hollowing bolt on a 17” bed.

The 1224 and 1018 are not meant for outboard turning.
 
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