Ok, in follow up to all the great help that I received on selecting a new lathe, I now have a new question....I own a direct 1X8TPI Nova chuck....it will now need to be a 1 1/8 X8 TPI.....is there an adapter? Sorry to be so needy!
You are correct. The folks at Woodcraft just told me that because the Nova is direct drive this cant be done....it makes no sense to me!What you probably need is an adaptor 1"x8 tpi to 1 1/4"x8 tpi. I assuming that your new spindle is 1 1/4"x8 tpi?
I do not have any problems with run out and the adapter extends the chuck out less than 2" and since you can't have too many chucks get the adapter and a chuck with the 1 1/4"- 8 thread.Claudio, I agree with Bill. It's better to sell the old chuck with the lathe it fits and buy a new chuck (or two) for your new lathe. I wasn't going to say anything because you already placed the order for the adapter, but perhaps there is time to cancel or change it?
A spindle adapter extends the chuck away from the spindle which can have issues; there is more opportunity for runout; it may be more prone to unthread when run in reverse.
But also a lot of turners, maybe most, have more than one chuck. So what's your next chuck going to be? Another 1x8 G3, or are you going to have to swap the chuck and the adapter? If you were buying a chuck for the Jet 1640 you probably would buy something bigger than the G3.
If you have an investment in Nova jaws you could step up to a Super Nova 2, otherwise there are lots of chuck choices to consider if you decide to replace your G3.
So I it is likely that I have run out that I don't know about what is the problem? The only time there will ever be a problem is when re-chucking but that problem can be minimized by marking the position on the tenon. I did have a serious problem once with the insert on a One Way chuck insert improperly torqued such that it had extreme run out but that only was a problem when I moved the work piece and chuck to my metal lathe to cut threads due to the different timing of the threads on the two spindles.Don I'm glad your adapter connected chuck has no run out. I have somewhere around 21 Nova chucks. Allowable run out from the Teknatool factory is .005 (I have tested all of mine and my run out is .0005 to .0015 which I attribute to the insert versions for the ones that reached the .0015 readings).
I am not planning to sell the chuck that I have. Need more. I don’t like changing jaws....I do not have any problems with run out and the adapter extends the chuck out less than 2" and since you can't have too many chucks get the adapter and a chuck with the 1 1/4"- 8 thread.
What exactly is runout?Claudio, I agree with Bill. It's better to sell the old chuck with the lathe it fits and buy a new chuck (or two) for your new lathe. I wasn't going to say anything because you already placed the order for the adapter, but perhaps there is time to cancel or change it?
A spindle adapter extends the chuck away from the spindle which can have issues; there is more opportunity for runout; it may be more prone to unthread when run in reverse.
But also a lot of turners, maybe most, have more than one chuck. So what's your next chuck going to be? Another 1x8 G3, or are you going to have to swap the chuck and the adapter? If you were buying a chuck for the Jet 1640 you probably would buy something bigger than the G3.
If you have an investment in Nova jaws you could step up to a Super Nova 2, otherwise there are lots of chuck choices to consider if you decide to replace your G3.
I dont either. Thats why I got a Nova Infiniti chuck and a complete set of jaws for it. Takes about three minutes to swap a set out.I am not planning to sell the chuck that I have. Need more. I don’t like changing jaws....
According to Wikipedia, runout ... "is an inaccuracy of rotating mechanical systems, specifically that the tool or shaft does not rotate exactly in line with the main axis. For example; when drilling, run-out will result in a larger hole than the drill's nominal diameter due to the drill being rotated eccentrical." On a lathe, runout results in wobble which may result in vibration..What exactly is runout?
Drilling would only be affected if you mount the drill bit in the head stock. The run out disappears when you mount a piece of wood in the chuck, but if you then drill a hole with the bit mounted in the tail stock the accuracy will be affected by misalignment of the tail-stock.According to Wikipedia, runout ... "is an inaccuracy of rotating mechanical systems, specifically that the tool or shaft does not rotate exactly in line with the main axis. For example; when drilling, run-out will result in a larger hole than the drill's nominal diameter due to the drill being rotated eccentrical." On a lathe, runout results in wobble which may result in vibration..