Talon chuck jaws interchangeable?

Re: Talon chuck jaws interchangeable?

Lyn J. Mangiameli

>Teknatool "Nova" jaw sets do have the same bolt spacing as your Talon, so technically they are mountable and will work. I very much discourage you doing this though. Teknatool chucks have a jaw limiter built into the body that prevents overextension. Talon put a groove in the body and uses a pin in one of the jaw sets to limit overextension of the jaw slides. It would be very hard to obtain an appropriate pin, determine the correct location and drill and seat a jaw slide limiter pin in a Teknatool jaw (possible yes, practical for the vast majority of us, no). So to use a Teknatool jaw on a Talon (or Oneway scrowl chuck) is a most unsafe practice.

It is easy going the other way, as to mount a Oneway or Talon jaw on a Teknatool chuck only require pulling out a the small pin that is press fitted in place. If you saved it, you could even re-insert it if you ever wanted to use in on a Oneway/Talon chuck again.

So, Teknatool on a Oneway = No

Oneway on a Teknatool Nova = Yes

Re: Talon chuck jaws interchangeable?

Jim Rutten

>Lyn,

I just bought what I thought were oneway pin jaws to go on my nova chucks but they turned out to be oneway stronghold. In this case the holes did not line up. Fortunately, there's a woodcraft (not the woodcraft I bought them at) close.

The Oneway Pin jaws work fine on the Nova

Jennifer@Indy.USA

>Jim,

I also just bought the Oneway pin jaws to go on my older Nova chuck. They work fine. They don't make the pin jaws for the Stronghold, only the Talon...that's why I had to put them on my Nova.(I have the Stronghold, not the Talon) You have to remove the pin on the one jaw that won't allow it to seat properly. Other than that they work great. Now all I need is to find an inexpensive adapter so I can use this setup on my General...instead of just my Jet mini.

Jennifer

Correction!!

Jennifer@Indy.USA

>Jim,

I bought the step jaws. They only make those for the Talon....that's the reason I had to use them on the Nova and not the Stronghold. It appears that the spigot jaws are made for both the Talon and Stronghold.

Jennifer

Re: Talon chuck jaws interchangeable?

RonZ

>It's not worth the price difference. It would be better to wait and save money up for the talon if price is the issue.

Re: Talon chuck jaws interchangeable?

Hovey Moore

>I'm going to disagree with you here. The pin is just to prevent over opening, causing the jaws to fall out but does nothing to secure the jaws to the chuck. Otherwise the original Oneway and Talon jaws are perfect copies of the Nova jaws. I took all the pins out of my talon jaws as I found it to be more of a pain when changing jaws than it is worth. Just don't keep opening the jaws forever or you will have to reassemble the chuck. But it works fine and gives another 1/4" capacity with no problems if you need it (I would not recommend using more extra capacity though).

Hovey

Re: Talon chuck jaws interchangeable?

Lyn J. Mangiameli

>I'm not sure where you find a disagreement. I never said anything to imply the pin was used "to secure the jaws to the chuck"

What I said was "Talon put a groove in the body and uses a pin in one of the jaw sets to limit overextension of the jaw slides." Which is what you are trying to convey as well.

Until recently, the Oneway jaws have not been what what can be termed "perfect copies of the Nova jaws." Actually, I suspect Oneway would be rather dissapointed to read that as they have made quite an issue of how their individual jaws are formed to a radius that prevents them from forming a contiguous circumpherance like the Nova jaws (and almost all others) will when closed. Only after many years of making an alternative to the usual (and Nova) style has Oneway finally relented to offer a contiguous circumpherance option.

I can understand why you find a pin to be a hassel to deal with in storage of extra jaw sets, and quick mounting of the jaws, but I hate to see you advocating removing an important safety feature that is integral to the Oneway/Talon design. It is quite possible for a turner, in a moment of distration or overconfidence to open the jaws farther than the jaw slides can be safely engaged in the chuck body (actually the ring gear). If an insuffienct overlap occurs, the jaw slide or teeth can break or distort enough to come loose, resulting in a significant chunk of metal becoming a projectile. I'm quite happy it hasn't happened to you, but the possibility is definitely there. The jaw slide extension limiters are important safety components and while their removal doesn't insure disaster, it definitely increases the possibility of it.

Re: Talon chuck jaws interchangeable?

Hovey Moore

>Lyn sorry I wasn't clear. I had to rush off to dinner and should have waited to post till I had time to read what I wrote.

My issue was with "So to use a Teknatool jaw on a Talon (or Oneway scrowl chuck) is a most unsafe practice." We all have to decide what is safe or not for us. Woodworking especially turning is a dangerous activity. The point I was trying to make is that you can safely use Nova jaws on a Talon chuck. You just have to use a little care. I think this is like using the stock blade gaurd on your table saw. You can use the saw without it but it makes lawyers nervous.

I do agree that opening the jaws beyond a certain point is dangerous but this is very easy to manage with the Talon. When opened the gear racks that engage the ring gear inside the chuck extend well beyound the chuck body. At about 1/2" the chuck is at the end of normal travel. At about 1" the first jaw can come off. So a simple observation can verify if you are getting near the end of safe travel. The gear racks are about 1/2" wide so it is real easy to estimate. More than ~1/2" and you need to be changing to larger jaws. Just look while you are mounting your blank like you should do anyway. It's no different than looking to make sure you didn't leave the chuck key in the chuck or if the tenon is seated properly.

The Talon has a very small amount of overlap between jaw sizes so the big advantage of the extra movement is that you can expand enough to fit a tenon inside the jaws and then tighten back down to the "normal" range thus allowing the teeth on standard Talon jaws to bite. But it takes a full six revolutions past the normal end point to get the jaws to come loose so the jaws are not going to just fly of when you remove the pin and open them a little too far.

Don't forget that the talon, even with #3 jaws, still does not take a very large tenon, so the tenon will break or come out long before the steel in the chuck fails unless you are very close to having a jaw come off anyways. This would not be true with a larger chuck like the Stronghold.

You are right the jaws are are not exact copies but close enough that it doesn't really matter. The main difference is at what radius the jaws fit in a circle. Oneway's fit a tenon best at a point slightly larger than what a "contiguous circumpherance" provides. What design works best depends on what size tenon you have. Regardless, I fail to see how a slight difference in how the clamping part of a jaw is shaped matters when talking about safely mounting the jaw to a chuck. For gripping the wood it can matter but when the jaws are open near capacity the slight shape difference is not significant. You even stated that it is fine to use Oneway jaws in a Nova chuck. So assuming that the jaw is not opened too far what is the problem? Using a set of Nova jaws is no big deal I've done it several times. You just have to understand where the stop point should be.

Hopefully you noted that I only advocated a small amount of increased capacity (1/4"). The jaws are still on securely at this point. I certainaly didn't recommend seeing just how wide a tenon can be while still gripped in the Talon as you seem to be thinking.

I don't recommend removing the pin when you first get the chuck but once you get used to how far the chuck can expand, then it can be an option if you are careful. Dennis sounds like he has some experience with the Talon so it should be no problem for him.

Hovey

Re: Great reply...

Lyn J. Mangiameli

>which nicely illustrates how folks can disagree or approach things with different priorities and still interchange informative posts.

I think your analogy to the table saw guards is good. I'm one who replaced the guard on my PM66 with a $500 aftermarket Brett Guard to have the safest guard I could obain. I have a friend how never uses any guard at all. Thus far we both have all our fingers, and likely we both have similar peace of mind when using the saws. For me, the Brett guard (coupled with constant vigilance) is important to achieve that piece of mind, for him it isn't. I do think the accident statistics are on my side.

You provide a great set of instructions on how to forgo the travel extension pin on the Talon. Anyone who is, or is considering doing so is well advised to read your instructions carefully.

My only factual point of disagreement is your statement that you " fail to see how a slight difference in how the clamping part of a jaw is shaped matters when talking about safely mounting the jaw to a chuck, " implying that I do. I just reread my posts and can't discern how they can be read that way. I was only pointing out how they are not identical in ways other than the overstop pin.

So I suppose it comes down a difference in "can" vs "should."

We both agree on the "can." We disagree on the "should." The nice thing is that this interchange has allowed others to have a deeper understanding of the issues involved, so they can make their own choice.

Re: Great reply...

Hovey Moore

>Thank you for the compliment. It is nice to be able to have a disagreement and not have it turn nasty. I think we both agree that constant vigilance is needed for the safe operation of any power tool.

I'm sorry about the jaw shape comment, that came out poorly. I just meant that the shape is not significant in this discussion.

I do want to clarify one point though, I have never said you should remove the pin, just that you can do so safely if you pay attention. But, I do not recomend carelessness when doing this or any turning activity or to remove the pin with larger chucks.

Hovey