Broadhead adapter question

[Tickbait]

I decided to use some old Bear Razorheads (greenies) recently and bought some steel broadhead adapters to mount them.  I've always used Stingers and this is my first attempt at mounting broadheads.  When I mounted them, the adapters stick out the bottom of the ferule by a small amount.  I realize there are two sizes of adapters but just wanted to make sure this is okay if the broadhead spins true.  Are all broadhead adapters and ferules the same angle?

[Orion]

They're pretty much the same angle, about 5 degrees (11 degrees for the nock).  However, there are little inconsistencies in construction.  Not all ferrules or adaptors are the same length, and, of course, the diameters vary as well. Not a problem to have a little adaptor protruding from the head as long as it's on straight.

[Tickbait]

Thanks Orion.  Do you happen to know which size adapters mounts flush with Zwicky or Ace heads? Looking to give them a try also.

[Terry Green]

Different broadheads have different ferrel lengths you're not going to find one that fits exactly flush on every single Broadhead.  I've been using the Zwickeys for 30 years and all the adapter stick out a smidgen it's no big deal if it was I wouldn't still be using them after three decades

[Tickbait]

Thanks Terry.  I take it it's better for it to stick out a little than to be recessed inside the ferule?

[Terry Green]

I would think so you'll get a more solid flush-mount that way against your adapter insert merger and the post will be completely seated inside the insert

[Terry Green]

I would think so you'll get a more solid flush-mount that way against your adapter insert merger and the post will be completely seated inside the insert.... I need gap between the insert and the adapter creates the weakest link and that's the post you want to alleviate any leverage whatsoever

[Tickbait]

Thanks Terry!

[Orion]

Though most of mine mount flush or protrude a little from the broadhead, I also have some 5/16-inch adaptors that ride an eighth inch or so inside the ferrule.  I'm thinking that's a good feature because on a really hard direct hit on something that might mushroom the shaft, the small amount of broadhead ferrule surrounding the shaft might keep the shaft from mushrooming.  

Have never hit anything that hard to test it, but in theory it would seem to be a benefit, albeit one that most would never need.

[JimB]

Adapters vary in diameter.I don't mean 5/16" vs 11/32".I have a lot of 11/32" adapters and they are all different.Some seat deeply,some don't.Ferrules rated 11/32" also vary.The adapters and ferrules are supposed to be 5 degrees but the width at the base can vary.Still the same angle.Spinning true is the most important thing.

I agree,I'd rather have adapter protruding than recessed.If the sharp edge of the rear edge of the adapter's taper bothers you,you can chuck the shank of the adapter in a drill press and use a mill file to taper or round over that edge.

[Terry Green]

Yes Jim...thanks for elaborating...

 the weakest link is the post ....and so you should also keep your broadheads screwed on tight and use plumber's tape if you have an issue because you do not want any Leverage to break the weakest link....thats also why I use right wing fetch cause the spin direction will tighten at impact.

Any gap between the insert and adapter is flirting with disaster. Flush n Tight is Right

[Orion]

Jim:  Think I said pretty much the same thing in my first post (except for mixing up the degree of point and nock taper, which I've since fixed).

The 5/16 inserts in an 11/32 ferrule represent an extreme example of the insert being recessed, but I'm inquisitive as to why you prefer the adaptor protruding,

If the arrow shaft diameter is flush with the back of the adaptor (where it's milled down to the post, the joint forming the weakest area), and the ferrule encloses that joint on a recessed adaptor, seems that would provide extra strength at the joint.

On the other hand, there is then a lip formed by the base of the ferrule around the arrow shaft, which doesn't look terribly good and would retard withdrawal from a target (or critter).    

[Biathlonman]

Razorheads have always seemed to be a touch smaller then 11/32.  Most others are truer to the 11/32 size.  I've found the 100 grain, 5/16" steel broadhead adapters that you can get at Braveheart archery an excellent one for the Razorheads.