QuoteOriginally posted by Jake Diebolt:
I've yet to have someone explain the benefit of this offset blade thing to me. Can anyone explain the rational? Is it the same as the rotational motion in a single bevel? Any testing to back it up?

x2.  Enquiring minds want to know.    

QuoteOriginally posted by LimBender:
 

QuoteOriginally posted by Jake Diebolt:
I've yet to have someone explain the benefit of this offset blade thing to me. Can anyone explain the rational? Is it the same as the rotational motion in a single bevel? Any testing to back it up?

x2.  Enquiring minds want to know.        [/b]

The offset blades compliment the single bevel causing alot more rotation through the whole cutting process. Similar to a drill bit, but with flat surfaces so they are easy to sharpen.

Here's another question - at what point does rotation through tissue become a liability?

I know the rationale behind single bevels and rotation - rotation splits bones as the head goes through them, and single bevels leave S-shaped wounds that possibly bleed more. Does the greater rotation make much difference in terms of penetration during testing? Does it use up some energy as it rotates? With the offset blades, is there more resistance when cutting soft tissue?

I have to say that my initial reaction to this is 'gimmick'. I'm not meaning to insult VPA - the glowing accounts of quality and service on this forum are proof of their integrity. But I can't help but think that this is one of those good ideas on paper that doesn't make much real difference. I'd have to see some comparisons between double bevel, single bevel and single bevel offset before I'd be convinced. Anyone have pictures or testing data?

Seems there have been MANY offset blade designs and they don't seem to last long. Maybe there is a reason for that? BUT, I'm probably not smart enough to figure it out anyway!        :D

In soft tissue and North American sized game, I don't think it will make a hoot of a differance between single or double bevel offset or straight blades. Where it might help out a little more is heavy bone on large dangerous game. Over 2 feet of penetration you might see a 90 degree rotation. So you won't see any loss of energy compared to a standard double or single bevel with straight blades. Having said that, there has been literaly hundreds of large game taken with our standard 2 and 3 blade. Including a complete pass through with our 300gr 3 blade on a water buffalo. It does however give dangerous game hunters another choice/advantage.

Can they be sharpened with a kme

QuoteOriginally posted by flyne:
Can they be sharpened with a kme

Yep  

Well I put my order in for some from broadside archery hear in Austrailia so I guse now iv just got to weight
Thanks for all the help Jim

QuoteOriginally posted by flyne:
Well I put my order in for some from broadside archery hear in Austrailia so I guse now iv just got to weight
Thanks for all the help Jim

Make sure you put them to good use.    

Don't forget to send pictures.  :D

You mentioned a complete passthrough with your 300 gr. 3 blade-can you tell us what bow was used for that?  Have you had many folks using the 3 blade with trad equipment and buffalo?

Will do I'm going to have to find some thing to shoot first lol
Jim

For those following the thread.....I cleaned it up.

I was trying to read it myself and it was annoying and distracting at all the gripping about the price....which was not the original question.

C'mon guys....lets try not to clutter up threads with whining about prices ok?

QuoteOriginally posted by calgarychef:
You mentioned a complete passthrough with your 300 gr. 3 blade-can you tell us what bow was used for that?  Have you had many folks using the 3 blade with trad equipment and buffalo?

The pass through was done by Andy Ivy with a compound in Australia when testing against other high end 2 blades. There are also others that got complete penetration with the broadhead sticking out the other side of the buff with 60# compound. Like I said this is in Australia.
The problem in Africa is that in most areas you are required to use a 2 blade broadhead. Which alot are using our 2 blade Penetrator.

Could someone post a better pic of this broadhead please? The pic on the VPA site leaves a lot to be desired, because I can't even tell it apart from the normal Penetrator. I would love to see what it looks like from the front so you can see the offset and the "drill bit" point or whatever.

Thanks

Here are some photos from Boomerang. Flynes link above has the same photos.





Sometimes an image is indeed worth a thousand words.

I would love to hear more about the experiments and physics behind this design and the whole, rotational thing with single bevels in general.

Better Pictures?...Here you go    

quote:

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Originally posted by Boomerang:
The guy's that won't spend $50.00 on a 3 pack of this quality probabably aren't going to spend 5 to $10,000 going to Africa either. Which these are designed for large dangerous game.     Will have to give these a try. I've been looking for a buffalo BH! Thanks!