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Author Topic: Spine/FOC. Tester  (Read 273 times)

Offline Earl Jeff

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Spine/FOC. Tester
« on: December 13, 2009, 03:54:00 PM »
Posted some pics of a spine/FOC tester I was building a few weeks ago, thought I would post some finished pic's.
 
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Offline Hot Hap

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Re: Spine/FOC. Tester
« Reply #1 on: December 13, 2009, 08:22:00 PM »
It looks very nice to me! Would like to see the FOC part in action. Hap
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Offline Earl Jeff

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Re: Spine/FOC. Tester
« Reply #2 on: December 13, 2009, 09:14:00 PM »

 
 FOC in action Glynn nothing more than a balance point a tape measure and the math formula.
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Offline Old York

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Re: Spine/FOC. Tester
« Reply #3 on: December 13, 2009, 10:40:00 PM »
Earl, how do you zero out the dial indicator before lowering your weight?
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"We were arguing about brace-height tuning and then a fistmele broke out"

Offline Hot Hap

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Re: Spine/FOC. Tester
« Reply #4 on: December 14, 2009, 11:35:00 AM »
That is slick! Hap
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Offline Tom Leemans

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Re: Spine/FOC. Tester
« Reply #5 on: December 14, 2009, 03:50:00 PM »
Old York - The bezel on the gauge rotates and then you can lock it into position.
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Got wood? - Tom

Offline Earl Jeff

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Re: Spine/FOC. Tester
« Reply #6 on: December 14, 2009, 04:02:00 PM »
Thanks Tom.  It has to be adjustable for different dia. Arrows
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Offline Old York

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Re: Spine/FOC. Tester
« Reply #7 on: December 14, 2009, 04:30:00 PM »
I know the bezel can rotate, but one still needs to get the plunger
dial under the shaft with no pre-load    :banghead:  

I'll re-phrase my question - Earl, how is your jig adjustable for different diameter arrows?
How do you move the dial indicator up and down?
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"We were arguing about brace-height tuning and then a fistmele broke out"

Offline JEFF B

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Re: Spine/FOC. Tester
« Reply #8 on: December 14, 2009, 04:33:00 PM »
now that looks awesome!
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'' sometimes i wake up Grumpy;
other times i let her sleep"

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Offline Art B

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Re: Spine/FOC. Tester
« Reply #9 on: December 14, 2009, 06:02:00 PM »
Old York, on mine, I made my right post adjustable up/down/in/out to help zero everything up. Course, mine's not slick built like Earl's for sure. ART
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Offline Old York

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Re: Spine/FOC. Tester
« Reply #10 on: December 14, 2009, 06:20:00 PM »
Hi Art! HA! I know what you mean...that's
a nice piece of work Earl did with the copper piping and fittings.
Least that's what it looks like to me. Pretty dang clever he is   :D  

Mine looks like something from the Red Green School of Engineering,
but she's accurate. I learned how to null out the dial indicator influence,
thanks to your support!
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"We were arguing about brace-height tuning and then a fistmele broke out"

Offline Earl Jeff

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Re: Spine/FOC. Tester
« Reply #11 on: December 17, 2009, 04:26:00 PM »
I WOULD LIKE TO TAKE CREDIT FOR THE GREAT PIPE FITTING BUT IT WAS PART OF A OLD SCOOTER MY BOY DISGARDED, AT LEAST I HOPE HE DID.  :confused:
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