Why is my scope always left?

[GeoffT]

Originally Posted by Fugue

Okay I'll admit I have never seen a Hooter Shooter, but surely they don't aim!?! So how can you tell if it is to the left or not for the Hooter Shooter?

Good point.

[The Meggy]

Pete, have not seen a hooter shooter in the flesh, but basically as I understand it its a machine that shoots the bow perfectly, thus taking out the human factor and allowing a new dimension in tuning and bow set-up. I believe that they will indeed shoot arrows down the same hole (as long as there's no wind or whatever) so its probably best to pull each arrow before shooting the next. One obvious thing you could use it for would be to make sure all your arrows shoot the same. cheers The Meggy

[Marcus26]

The reason your scope is to the left of the string is because of torque on the shooting system induced by the cable guard.
When you draw the bow this torque is reduced and the scope comes into line. During the shot the arrow has left the bow before the torque has returned. So despite the bad associations with the term, it is perfectly accurate and consistent.

how can they replicate an archer. what do they do .... can you only shoot one arrow at a time ,because the second one in theory should go straight down the back of the first. weather you bow is spot on or not

Not always. I use a Hooter Shooter to introduce faults and test their responses. It is perfectly easy to set up a bow that can shoot repeatable holes, but that's not the goal. You want to use it to see what happens when you do bad things. This is what impressed me about the Guardian, it was very resistant to inconsistancies.
Also while the HS can replicate your technique, best is to replicate it's technique as it shoots better than you do.

[The Meggy]

Cheers for that one Marcus, so you're saying that the bow is in effect aligned differently at full draw than at the beginning of the draw, due to a reduction in torque? I think I get the general picture, but I still don't understand why my arrow appears to point a bit right but goes central. If the torque doesn't reappear until after the arrow has gone I would expect it to go in the direction it is pointing at full draw. Still a bit confused (as usual) sorry...

[Watch_Man]

When Wendy changed one of her bows to use a HyperGlide it did effect scope position as it increased clearance by 1/8th inch or so but moved the cables position in relation to the string. This would fit with what Marcus said about torque as when the bow was drawn fully back in the Apple D/L machine we had to make a minor adjustment to the bow to get everything 100% again. This was partly to do with the bow having a string set with a fixed rather than floating yolk and a small amount of cam lean had to be removed.

Regarding the Hooter Shooter. Wendy wrote the article for Geoff and hopefully the photographs will give everyone a good idea what it is like. Wendy tried to provide some images of the release aid setup and other areas not usually seen. Once the Glade is out in print for a while then we may publish some of the images Geoff doesn't use, until then the Glade has exclusive rights to them.

As has been said, the Hooter Shooter is just a machine and you can use it to test various changes. In my case I mainly use it to blow up fruit with my Axis FMJ's However if for example you change fletch type and you want to compare the difference, or perhaps if you want to compare different arrows spines to see how they group, or even creep tune your bow accurately then it will do it. The machine is not magic and it will not take a sh*t bow and turn it into Chris White's love toy, but it will remove the major inconsistancy ie the archer, from the equation.

If it is a nice day then we may take it along to the County Windsor on Sunday as I know the Meggy is going. Just depends how much time we get and if I run out of apples and melons to kill with it

[The Meggy]

Thanks Trevor, though not sure what a HyperGlide is, is it a type of cable slider? Would love to have a look at the HooterShooter if you take it to the County Windsor. Not sure I would want my bow to be Chris White's love toy even if that were possible! Also I am thinking it's about time I renewed my Glade subscription, will get on to that one.

Anyway, see you at the Windsor, cheers Graham

[Watch_Man]

Originally Posted by The Meggy

Thanks Trevor, though not sure what a HyperGlide is, is it a type of cable slider? Would love to have a look at the HooterShooter if you take it to the County Windsor. Not sure I would want my bow to be Chris White's love toy even if that were possible! Also I am thinking it's about time I renewed my Glade subscription, will get on to that one.

Anyway, see you at the Windsor, cheers Graham

Graham

the HyperGlide is made by Saunders and have become popular because of US dealers fitting them to Bowtechs before selling them.

[bimble]

That's right, I'm a leftie so it's all opposite. The arrow is about an arrow's width off to the left and the scope is slightly off to the right (of the string). But the arrows seem to fly straight (least when I shoot them properly!! )

Originally Posted by The Meggy

Bimble, are you shooting left-handed? In which case you would be experiencing the same effect as me, if I look down at my arrow before I shoot it points slightly to the right (makes sense if the scope is to the left). But for whatever reason, the arrows (the good ones anyway!) still go straight.

Interesting that I still get this even though I'm using a shoot-through cable system that's supposed to remove torque from the cable guard...

Originally Posted by Marcus26

The reason your scope is to the left of the string is because of torque on the shooting system induced by the cable guard.
When you draw the bow this torque is reduced and the scope comes into line. During the shot the arrow has left the bow before the torque has returned. So despite the bad associations with the term, it is perfectly accurate and consistent.

[sambow]

Originally Posted by Marcus26

The reason your scope is to the left of the string is because of torque on the shooting system induced by the cable guard.

This would seam to tally with a recent experience I had. The cable guard on my Merlin TM5 shuck loose during a shot. No problem I thought, I will just move it back to where it was and tighten it tighter. Not the case the left right positioning of my arrows shifted completely because I hadn't got it to the exact same position. In the end I decided rather than adjust the sight I would adjust the cable gaurd in an attempt to get it back to the same position. It took alot of trial and error but eventually The arrows came back on target.

So the cable gaurd definately influences left right scatter and hence where the scope ends up.

[The Meggy]

Cheers for all your replies folks, it seems to be definitely down to the cable guard as detailed by Marcus. Interesting to hear that bimble still gets this effect when using a shoot-through system though - maybe there is some secondary effect going on also. One conclusion I make from all this is to try not to have your cables pulled to the side any more than is necessary to achieve good clearance.

Cheers again, the Meggy