Spin testing = Dodgy Field tips

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Dash
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Spin testing = Dodgy Field tips

Post by Dash » Sun Jul 08, 2012 9:10 am

Over time I acumulated a bunch of bolts that didn't perform well in a spin test so they were put aside. Today I was playing around with them.
I started with the worst ones by swapping the field tips in them with my good bolts . I didn't expect any change, but just had it in my mind it was worth checking. After marking and swapping the field tips around, the bad bolts all spun perfectly smooth, and the good bolts inherited a vibration. To the naked eye, none of the shafts or tips looked untrue on my spinning jig, but felt bad on the hand spin test.
I don't have a dial gauge to check, but the problem is definately in the bunch of dodgy field tips.
Has anyone else run into this problem before?

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nchunterkw
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Re: Spin testing = Dodgy Field tips

Post by nchunterkw » Sun Jul 08, 2012 9:56 am

Dash...absolutely. It gets really clear if you put the bolts in a cordless drill and spin them that way. I have also seen the same thing with certain BHs. To me it speaks to the quality of craftsmanship.
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joe171
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Re: Spin testing = Dodgy Field tips

Post by joe171 » Sun Jul 08, 2012 10:18 am

Morning Guys
" spin arrows in a cordless drill " could you please explain I don`t get it
Thanks Joe171

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Limbs and Sticks
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Re: Spin testing = Dodgy Field tips

Post by Limbs and Sticks » Sun Jul 08, 2012 10:36 am

Dash wrote:Over time I acumulated a bunch of bolts that didn't perform well in a spin test so they were put aside. Today I was playing around with them.
I started with the worst ones by swapping the field tips in them with my good bolts . I didn't expect any change, but just had it in my mind it was worth checking. After marking and swapping the field tips around, the bad bolts all spun perfectly smooth, and the good bolts inherited a vibration. To the naked eye, none of the shafts or tips looked untrue on my spinning jig, but felt bad on the hand spin test.
I don't have a dial gauge to check, but the problem is definately in the bunch of dodgy field tips.
Has anyone else run into this problem before?


This has all ways been a problem, each arrow has it's own feel for what bh or fp it likes, I keep spinning each one until I find it's match, and it's not that the arrows aren't made the same treat them like people :)

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Flswampwalker
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Re: Spin testing = Dodgy Field tips

Post by Flswampwalker » Sun Jul 08, 2012 11:18 am

never thought about using a drill for a spin test. Should work.
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CBRon
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Re: Spin testing = Dodgy Field tips

Post by CBRon » Sun Jul 08, 2012 12:31 pm

I square my inserts.. Hears a tip = Rub some HARD wax into the threads of the point = parafin or candle wax or any hard wax, This helps center the point in the insert..... Ron
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Ont_Excal
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Re: Spin testing = Dodgy Field tips

Post by Ont_Excal » Sun Jul 08, 2012 1:33 pm

CBRon wrote:I square my inserts.. Hears a tip = Rub some HARD wax into the threads of the point = parafin or candle wax or any hard wax, This helps center the point in the insert..... Ron
Before I add an lube, I run a tap in the insert to clean the threads.
"Death leaves a heartache no one can heal. Love leaves a memory no one can steal"

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Dash
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Re: Spin testing = Dodgy Field tips

Post by Dash » Mon Jul 09, 2012 6:41 am

Cheers for the input guys. Overall I'm just happy that my epoxied inserts aren't the problem :lol:

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Ont_Excal
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Re: Spin testing = Dodgy Field tips

Post by Ont_Excal » Mon Jul 09, 2012 7:16 am

You will find two things wrong with some of the cheaper field points.
1....They all are not true on center, as a spin test will show.
2....I have found a weigh discrepancy among some and have to cull out the high and low weights. Some were as low as 119 grains and some as high as 129 grains.

These may not matter at 20 yards but will be noticeable at 30 yards and beyond.
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Re: Spin testing = Dodgy Field tips

Post by Bullzeye » Mon Jul 09, 2012 7:24 am

So who makes the most true field point?
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Ont_Excal
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Re: Spin testing = Dodgy Field tips

Post by Ont_Excal » Mon Jul 09, 2012 8:17 am

I don't really know.
I'm using old field points from my vertical bow days and can't remember a specific brand.
Most come out of a bin at my dealer.
I do know that some were Easton brand and were more money at the time.
For now I just sort through what I have and likely will never need to buy any more.
"Death leaves a heartache no one can heal. Love leaves a memory no one can steal"

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