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Centershot question...it just doesn't compute

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Re: Centershot question...it just doesn't compute

Postby KCummings » Sat Aug 07, 2010 3:59 pm

Jim:

For this experiment, I was using Beman ICS Bowhunter 500's, 28" bop, 125 grain tips.

40 lb Black Max wood/glass limbs (longs), which scale out right at 40 lbs at my draw at the lowest preload setting.

Now, having said that, the same phenomenon holds true when I switch to my hunting setup which is the Extreme BF limbs, 45lbs at my draw, using Carbon Express Terminator Select (45/60), 29.5" bop and 125 grain tips. With the felt pad, impact is right where I'm looking, with the Hoyt rest, impact is well left. I have to align the arrow inside of center for the impact to be where it is with the felt pads when the arrow is set up left of center.

I'm gong to go try something radical and report back in a while.

:?

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Re: Centershot question...it just doesn't compute

Postby Jim Casto Jr » Sat Aug 07, 2010 6:17 pm

Eager to hear the radical report. :^)

Those arrows would be waaaay too stiff for me at that poundage with light heads.
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Re: Centershot question...it just doesn't compute

Postby KCummings » Sat Aug 07, 2010 7:37 pm

Jim Casto Jr wrote:Eager to hear the radical report. :^)


OK, I think the mystery is solved. (thanks to you guys...) I tried using my daughter's Easton Blues 1716's, 28" bop, 80 grain point. This is out of the same 40 lb Black Max wood/glass limbs. I lined the arrow up just left of center and impact is back where it is supposed to be.

I would have thought these shafts would have been WAAAAAAY too weak, but apparenly they aren't.

Apparently, with the stiffer carbons, the felt pad acts more like a cushion plunger and absorbs more than I would have thought.

Interesting...

:mrgreen:

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Re: Centershot question...it just doesn't compute

Postby Bender » Sat Aug 07, 2010 9:53 pm

Interesting indeed!
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Re: Centershot question...it just doesn't compute

Postby KCummings » Sun Aug 08, 2010 6:37 am

Now I know why I've just stuck to shooting off the pads. Those elevated rests take too much effort.

:mrgreen:

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Re: Centershot question...it just doesn't compute

Postby Feral Donkey » Sun Aug 08, 2010 7:52 am

Yeah, elevated rests can be a pain in the butt. Simple ones like the Bear weither rest or the RWS vynal siding rest I like. Plungers and magnetic flippers are something I like on a target bow.
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Re: Centershot question...it just doesn't compute

Postby trapperDave » Sun Aug 08, 2010 8:15 am

id just change tip wgt till it came back in. add a bit of wgt itll make up for the diff in side pressure
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Re: Centershot question...it just doesn't compute

Postby JackDaw » Sun Aug 08, 2010 2:43 pm

Interesting yep!
Glad you solved that riddle KC.
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Re: Centershot question...it just doesn't compute

Postby Bender » Sun Aug 08, 2010 4:25 pm

But how much point weight would it take to get a 28" .500 deflection shaft to behave like a 28" .880 deflection shaft?
Or looking at it another way, how much wood could a wood chuck chuck if a wood chuck could chuck wood?
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Re: Centershot question...it just doesn't compute

Postby JackDaw » Sun Aug 08, 2010 6:19 pm

Bender wrote:But how much point weight would it take to get a 28" .500 deflection shaft to behave like a 28" .880 deflection shaft?
Or looking at it another way, how much wood could a wood chuck chuck if a wood chuck could chuck wood?


If a wood chuck could chuck wood, it would need longer arms to chuck it.
"Chucking wood" generally means throwing a quarter-split, fireplace length of white
oak about 17.3 yards. That's a LOT to ask of a wood chuck.

I don't think wood chucks ever were true serious contenders.
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