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WTT3 bow photos and FD curves (images on page 3)

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Re: WTT3 bow photos and FD curves (images on page 3 added May 9)

Postby badger5149 » Fri May 08, 2009 11:54 am

Jim, that was outstanding, we will be studying these charts all year. Kirkl had some extreme efficiency going on, so did TJ. Thes are some of the hottest bows ever built. Trad bowyery has stepped into a new era. Steve
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Re: WTT3 bow photos and FD curves (images on page 3 added May 9)

Postby BK in TEXAS » Fri May 08, 2009 11:58 am

Holy buckets! That's awesome!!!!

NOW I got questions :shock: :shock: :shock:
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Re: WTT3 bow photos and FD curves (images on page 3 added May 9)

Postby Hornseeker » Fri May 08, 2009 12:21 pm

Do we seriously not get to see the numbers for the two fastest bows there??? Kens and Jimmy's??

OK... I dont understand how Kirks bow can shoot 194 and be 95% efficient, but Dans bow can shoot 195 or 6 and be 86% ????

Also... how in the hell is Kirks bow with the similar geometry of mine making 7% more efficiency??? Not getting that at all... Cool numbers. I am mostly miffed by Dan's lack of efficiency yet hitting high speeds????

Thanks very much Jim!!
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Re: WTT3 bow photos and FD curves (images on page 3 added May 9)

Postby tjdeerslayer37 » Fri May 08, 2009 12:31 pm

Ernie what charts are you lookin at? The first one is kens, the centaur is a few down. The centaur numbers on the chart aren't the ones from when it was hotrodded since they did that the next day.

Yeah the efficiency thing beats me too....
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Re: WTT3 bow photos and FD curves (images on page 3 added May 9)

Postby jwillis » Fri May 08, 2009 12:36 pm

Ernie, I'm also confused about the draw force numbers on Dan's bow. The last two numbers went down...which looks questionable. Maybe Marc or Kenro can comment on how the draw weight was measured on that one? All I have is the data that was called out when the bow was pulled. Ken opted not to record FD numbers on his Reaper double carbon, so you might ask him for the explanation. Jim
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Re: WTT3 bow photos and FD curves (images on page 3 added May 9)

Postby badger5149 » Fri May 08, 2009 12:37 pm

Dans bow had over 100% of stored energy compared to draw weight. Some of the higher energy storing bows fell off a bit in efficiency but were still high, while some of the lower energy storing bows were higher in efficiency. Bending out closer to the tips usually drives up efficiency but lowers energy storage. The net result was all of you had some fantastic speeds just got there isn slightly different ways. I plan to study these quite a lot over the next few weeks, some real valuable stuff here. Steve
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Re: WTT3 bow photos and FD curves (images on page 3 added May 9)

Postby jwillis » Fri May 08, 2009 12:41 pm

Steve, is that correct on Dan's bow for it to have more SE than PDF? I entered the numbers twice on that bow just to make sure I plugged it in correctly. Jim
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Re: WTT3 bow photos and FD curves (images on page 3 added May 9)

Postby Kenro » Fri May 08, 2009 12:52 pm

WOW!! Now thats going the extra mile Jim!!!! thats cooler than smashed cats!! :D
If you dont mind Jimmo, I'll get you the force draw numbers from my hotrod and can replace the empty FDC chart thats up? If you want?
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Re: WTT3 bow photos and FD curves (images on page 3 added May 9)

Postby BK in TEXAS » Fri May 08, 2009 12:59 pm

badger5149 wrote:Bending out closer to the tips usually drives up efficiency but lowers energy storage.


Steve.....Do you mean bending out as in the unstrung profile, or the tips uncurling at full draw?

BK
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Re: WTT3 bow photos and FD curves (images on page 3 added May 9)

Postby Hornseeker » Fri May 08, 2009 2:24 pm

TJ... for me... Centaur's numbers aren't there... just draw weight and speed??/

Cant wait to see Kens...

So.. .abow can store X amount of energy and shoot an arrow super fast, but "not" be as efficient as another that stores similar amount but shoots an arrow slightly slower? By a long shot?? Dont get it. Hopefully we can have some good discussion on this, ala Mr. Gardiner and I can learnt sumptim... :roll:
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