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Nova G3 1X8TPI

Discussion in 'Woodturning Discussion Forum' started by Claudio Feler, Sep 13, 2020.

  1. Claudio Feler

    Claudio Feler

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    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!
     
  2. Robert D Evans

    Robert D Evans

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    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?
     
    Charles Cadenhead likes this.
  3. Claudio Feler

    Claudio Feler

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    My mistake, 1 1/4 to 1 inch
     
  4. Claudio Feler

    Claudio Feler

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    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!
     
  5. Chris Lawrence

    Chris Lawrence

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  6. john lucas

    john lucas AAW Forum Expert

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    Well you can get an adaptor from www.bestwoodtools.com but it's really an extension with the different threads. When you buy a chuck that does not have an insert and is direct threaded the extension adaptor is how you have to go. That's why I usually suggest people buy chucks that require a threaded insert. That insert can be removed and an insert with a different thread can be installed. I made the same mistake on my first chuck.
     
    Bill Boehme likes this.
  7. Tom Hansen

    Tom Hansen

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  8. Claudio Feler

    Claudio Feler

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    And, I have sorted it through the Teknatool website. Part ordered.
     
  9. Claudio Feler

    Claudio Feler

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    Thank you!
     
  10. Bill Blasic

    Bill Blasic

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    If it is a direct thread 1" X 8 chuck you will be better off selling it and getting a chuck that either allows for an adapter for different threads or get a direct thread 1 1/4 X 8 chuck.
     
  11. Don Wattenhofer

    Don Wattenhofer

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    I have had the PSI adapter for many years so that I can use my 2 chucks with 1"-8 inserts and 1 direct 1"-8 chuck on the small lathe or the larger lathes with 1 1/4"-8 spindles. I did modify the adapter by drilling a 1/2" hole thru it.
     
  12. Mark Jundanian

    Mark Jundanian

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    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.
     
    Claudio Feler likes this.
  13. Don Wattenhofer

    Don Wattenhofer

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    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.
     
  14. Bill Blasic

    Bill Blasic

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    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). Now the adapter as per Teknatool - (IMPORTANT NOTE As this adapter is used to create a lathe spindle size that will hold a variety of accessories, run out and performance may vary depending on what accessories you are using.We cannot guarantee run out or performance of these accessories while using this thread adapter.These specialized Thread Adapters also have a different warranty from our usual NOVA chucks and NOVA Chuck inserts/adapters) You take the chance that you add a bunch of run out when using an adapter that's all I'm saying. (Note I also have Oneway, Vicmarc, Bulldog and Axminster chucks. None of my chucks have more than .0015 run out). What I'm saying is that if you get a chuck matched to your spindle size you can reasonably expect a fairly true running chuck.
     
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  15. Don Wattenhofer

    Don Wattenhofer

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    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.
    Overall the run out should not be a problem for someone working with wood, but that is just my opinion.
     
  16. Tom McClellan

    Tom McClellan

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    Another vote to just buy an adapter and worry about getting the right spindle size for future chucks. I think I got the PSI 1-1/4" to 1" one for maybe $15 and it's worked great.
     
  17. Claudio Feler

    Claudio Feler

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    I am not planning to sell the chuck that I have. Need more. I don’t like changing jaws....
     
    Bill Boehme likes this.
  18. Claudio Feler

    Claudio Feler

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    What exactly is runout?
     
  19. Gary Beasley

    Gary Beasley

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    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.
     
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  20. GRJensen

    GRJensen

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    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..
     
  21. Don Wattenhofer

    Don Wattenhofer

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    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.
     
  22. Mike Brazeau

    Mike Brazeau

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    I use a Oneway adapter from M33 to 1x8TPI to use a pair of Talon chucks and other stuff I have around that are 1x8 and have absolutely NO problems. It does have a set screw and I only set it finger tight in the groove. If overtightened it can throw the alignment off. I have a couple of midi lathes that are 1x8 so it makes a practical and totally workable solution.
     
    Don Wattenhofer likes this.

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