Improved, Spine-O-Meter Mark II

Cupcake · December 10, 2007, 10:26:00 PM

Check out the sponsor classifieds for the improved Spine-O-Meter. The scales have been improved to include pounds spine, aluminum and carbon deflections. Now all three shaft types can be compared at a glance on the same scale. The Rosetta Stone for arrow shafts.

Thanks,
Kevin

SlowBowinMO · December 10, 2007, 10:48:00 PM

Wow!

Bjorn · December 11, 2007, 01:13:00 AM

Kevin you have to stop improving! Mine was perfect till this one came along!

dino · December 11, 2007, 06:55:00 AM

My hats off to ya there.

dino

JC · December 11, 2007, 08:19:00 AM

Kevin, for those of us who already own one of these finely crafted pieces: can we get a set of the new scales?

Cupcake · December 11, 2007, 06:23:00 PM

I will have new scales available for those who have the original ones. They are pretty neat if I do say so myself. The supply is a bit limited right now but that should be fixed in a week.

Funny, I still have not made any woodies yet.

Kevin

DesertDude · December 11, 2007, 11:14:00 PM

Well this weekend I received a custom Spine-O Meter from Kevin as a Christmas gift. It has a few "Extra" options that I asked for. From the first day he told us he was going to design/make a spine tester, I knew that it would be Top Notch. Mine is perfect. Kevin's technical background really comes to the front with this thought out tester. We just got off the phone, dicussing the idea of building bows. I can't wait! Kevin I want to thank you for the Gift.

Mark

PS: We still have to work on your nick-name "CupCake".......

beachbowhunter · December 12, 2007, 11:23:00 AM

Yeah, you guys should see the one with the 21" rims and in-dash Nav system. Whooooooeee! Way to go Kevin.

Cupcake · December 12, 2007, 09:38:00 PM

Mark,

Thanks for the kind words.

Mark sort of took me under his wing a few years back and taught me a lot about traditional archery so I wanted to show my appreciation. He is good company.

I know my handle is a bit weird. My wife used to call me cupcake all the time so I thought...

I have been considering the new handle "The archer formerly known as Cupcake, TAFKAC. Waddayathink?
Kevin

KodiakBob · December 13, 2007, 07:07:00 AM

Why not keep the pastry theme and be StudMuffin!

KodiakBob · December 13, 2007, 11:26:00 AM

How does one order one of these Mark IIs

Rich LaBombard · December 14, 2007, 08:14:00 AM

ttt

buffhunter · December 15, 2025, 11:47:53 AM

Do you still make the spine-o-meter mark 11 and if you do how much are they selling for ? Would i be able to get plans,diagrams and measurements to make my own if you don't sell and make them anymore? Thanks

Kirkll · December 15, 2025, 09:40:16 PM

Quote from: buffhunter on December 15, 2025, 11:47:53 AMDo you still make the spine-o-meter mark 11 and if you do how much are they selling for ? Would i be able to get plans,diagrams and measurements to make my own if you don't sell and make them anymore? Thanks

do you realize this thread is 18 years old?

Kelly · December 15, 2025, 10:13:37 PM

Besides it being an 18 year old thread his scale is way off. With deflection being on the right and pounds being on the left .520 should be 50#, not 61# like it shows in the picture.

Burnsie · December 16, 2025, 09:17:33 AM

https://oakcreekarchery.com/oakcreek3_2020_003.htm

Old York · December 22, 2025, 02:45:45 AM

Quote from: Kelly on December 15, 2025, 10:13:37 PMBesides it being an 18 year old thread his scale is way off. With deflection being on the right and pounds being on the left .520 should be 50#, not 61# like it shows in the picture.

Kelly, Gerlock's spine tester has both AMO and ASTM scales ---- it is correct and accurate. The left side of the scale is the old AMO (showing bow poundage); the black section of the pointer is covering the 59 pounds mark. The middle section of the scale shows various Easton aluminium arrow shafts, and ASTM aluminium/carbon arrow deflections are on the right-most side of the scale.

The pointer's red tip shows an approximate .534" deflection; the black section of the pointer covering the Easton aluminium arrow shafts area likely reads 2016 (a .531 deflection); this translated to AMO is 59 pounds.

To create his two different deflection scales, Gerlock uses the well-known .825 conversion factor, which is also used in both Stu Miller's and 3 River's Dynamic Spine calculator programs.

Sadly, it appears the OakCreek http link is no longer active and it is a loss, for Gerlock's articles brought us out of the chronic AMO/ASTM spine measuring confusion.

Tajue17 · December 22, 2025, 07:34:29 AM

Quote from: Kelly on December 15, 2025, 10:13:37 PMBesides it being an 18 year old thread his scale is way off. With deflection being on the right and pounds being on the left .520 should be 50#, not 61# like it shows in the picture.

Its Buffs first post here,,, all good buff we've all done it..... if you have any questions just post em.

Burnsie · December 22, 2025, 11:08:22 AM

The Oak Creek link works for me?
Whether you can still order from them is questionable, but I can click on all the buttons on the web site and see the deflection charts, explanation of formulas...etc.

Kelly · December 22, 2025, 11:39:08 AM

York, deflection is deflection regardless of which shaft material you use. It's a constant. Even when Easton came up with their spine/pounds calculations they used an AMO scale which had deflection and corresponding pounds based upon 26" centers. The only change to the spine testor Easton used(Scheib spine testor) was to extend the posts to 28". Yes that changes the amount of defection but they used the pounds part from the AMO scale, which was always calculated based upon 26" centers and a 2# weight, not the 28" centers Easton used. Also they later found out that their weight was only 1.84#, which would measure less deflection. So instead of changing their weight to 2#(the AMO standard) and recalibrating the scale to the 28" centers they used, they just declared their way of spining aluminum/carbons as gospel!