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Main Boards => PowWow => Topic started by: Ben Maher on April 16, 2008, 08:46:00 PM

Title: 2018 spine query
Post by: Ben Maher on April 16, 2008, 08:46:00 PM
Just curious...if have a 2018  cut to 29" and add 200gn as point weight what wpould it break down the spine to.
i'm looking for something too shoot out of a 50# @ 27" Hill w/ dacron string.....
they shhot great out of my Liberty's English but they are cut. more to center

cheers

ben
Title: Re: 2018 spine query
Post by: Magnum in Ms on April 16, 2008, 09:54:00 PM
I would guess about 5lb for the extra inch of shaft and about 10lb for the 200gr point. Total arrow weight will probably be a little over 600grs.
Title: Re: 2018 spine query
Post by: Fletcher on April 16, 2008, 10:07:00 PM
A XX75 2018 static spines at 67 lb.  One inch of shaft takes it to 62 and 200 gr of point wt is worth another 5-10 lb, or 52-57 lb.  You may find that you do just fine with it or it may be just a bit stiff.    Gonna have to shoot it to find out for sure.  Good luck, let us know how it all turns out.
Title: Re: 2018 spine query
Post by: Jerry Jeffer on April 17, 2008, 07:42:00 AM
That could work for you, but you might want to go with 2020. Try them out, and here is some thing that might help you with weight calc.  http://home.att.net/~sajackson/arrow_xx75.html
Title: Re: 2018 spine query
Post by: Rich LaBombard on April 17, 2008, 09:14:00 AM
Pretty slick link, thank you.
Title: Re: 2018 spine query
Post by: thehaf2000 on April 17, 2008, 10:19:00 AM
I did the chart on the link and compared it to actually weighing my arrow-----exactly the same weight!!!! Both were 525 grains.
Title: Re: 2018 spine query
Post by: hvyhitter on April 17, 2008, 08:55:00 PM
2020s are more than likely too stiff, the 2018s set up like you describe may be a tad stiff too. Might try 2114s or 2016s.
Title: Re: 2018 spine query
Post by: loco_cacahuate on April 17, 2008, 09:09:00 PM
I use 2018's 30" and a 145 gr tip for my 52# longbow that I draw 29", they fly great for me.