UEFOC

[katman]

What is the most UEFOC you have been able to obtain? And what components were used?

Please, this is not an foc debate. Thanks.


Summary on page 6.

[monterey]

Best I've done was 23%.  Not real high, but it was a woodie.

[longbow fanatic 1]

Can you provide the range of FOC for these categories?

FOC range-?

EFOC range-?

UEFOC range-?

I'm not being a smart aleck. I sincerely don't know what constitutes the ranges for these categories.

[9 Shocks]

I shoot 29" GT trad .500's with 250 grains up front.  Shot out of 45-47lb bows.  FOC is about 23-24% if I recall.  Havent tried to build much higher than that.

[Friend]

longbow fanatic 1....

Extreme FOC ( >19%) - 1st notable gains are manifested at levels >19%

-- Normal FOC - < 12%

-- High FOC - >12 % to 19%

-- Extreme FOC- > 19% to <30%

--Ultra EFOC >30% - EFOC contributes to a 40% to a 60% increase in penetration having most of the enhancing features

--Ultra-EFOC is (Study defined) as being 30% and above. The reason being, it's really difficult to reach 30% and above FOC without making a concentrated effort to attain FOC.

[Covey]

In theory, one would think after you get that much weight on the front of an arrow it would start having a tumbling effect. Anybody experience this? The EFOC and UEFOC subject really interest me.

[Longtoke]

31%  

Victory vforce 500 shaft cut to 27.5"
300 grain point with the standard 22 grain insert

3 -4" shield fletched and I swapped the shafts around so the graphic was toward the point rather than the nock.

Total arrow weight is about 520 grains

[carbonflyr]

33.7% reference my post in thread "how much weight up front" on page three

[Friend]

Covey...why would one think that?

Toss a brick with a string attached and no turning induced by the release and the string merely follows.

The more FOC, the less fletching is required and if utilizing longer fletchings, may place so much drag on an EFOC and UEFOC arrow that the slowed arrow velocity will be forced to drop at an accelerated rate.

[ThePushArchery]

I got to 32.5%.

500 Spine Black Eagle X-Impact, 40 gn outsert, 80 gn custom made internal SST weight to stiffen spine, 250 gn head.

Thank goodness for metal riser ILF bows, or else that would have been a tough one to tune in...

[Covey]

Friend,
"Toss a brick with a string attached and no turning induced by the release and the string merely follows."

I do appreciate the feedback. I have no experience in EFOC or UEFOC, but would love to learn. So what your saying, is that the EFOC weight is essentially pulling the arrow correct? I'm in the process of setting up some heavy carbon arrows with 250 grains up front.

[longbow fanatic 1]

Originally posted by Friend:
longbow fanatic 1....

Extreme FOC ( >19%) - 1st notable gains are manifested at levels >19%

-- Normal FOC - < 12%

-- High FOC - >12 % to 19%

-- Extreme FOC- > 19% to <30%

--Ultra EFOC >30% - EFOC contributes to a 40% to a 60% increase in penetration having most of the enhancing features

--Ultra-EFOC is (Study defined) as being 30% and above. The reason being, it's really difficult to reach 30% and above FOC without making a concentrated effort to attain FOC.

Thanks, Friend!

[Hermon]

There is a lot of information here

http://tradgang.com/noncgi/ultimatebb.php?ubb=forum;f=24

[Shadowhnter]

Best ive gotten so far is 31%

[dbd870]

I'm at 20.2%  Those of you around 30 has your experience shown a difference on deer sized game?

[Darryl R.]

Im shooting 28.96% (or call it 29% efoc).
Beman Centershot 400's cut to 28.25" (i draw 28.00) with a 75 grain brass insert, 310 grain head, and 3 - 3.5" parabolic fletchings on the back, 10 grain nock.  The calculator calls it 1 to 1.5% less than what the efoc really is when you actually balance the shaft on a knife blade and take real measurements.
Bareshafts fly great out to 25 yards.  In fact, I can even shoot a bareshafted broadhead out to 15 yards quite well (dont try that with normal foc).

[katman]

Originally posted by Covey:
Friend,
"Toss a brick with a string attached and no turning induced by the release and the string merely follows."

I do appreciate the feedback. I have no experience in EFOC or UEFOC, but would love to learn. So what your saying, is that the EFOC weight is essentially pulling the arrow correct? I'm in the process of setting up some heavy carbon arrows with 250 grains up front.

Don't forget the fletching is adding drag aiding in stabilization and its effect is larger due the the longer lever arm as foc goes up.

My last try hit 32%, 465gr point/insert, 4x4 A&A fletch with turbulator, x-impact 300 spine full length.

[Shadowhnter]

Thats a serious arrow katman, Nicely done!

[katman]

Thanks shadowhunter, I cheated a little and had a springy rest and metal ILF riser to help.

[Gil]

Im at 32%. Full length RIP XV with stainless Shok insert, 300 points, 4 fletch 2.75AA and turbolator