Trad Gang

Main Boards => The Bowyer's Bench => Topic started by: Bud B. on August 29, 2010, 01:57:00 PM

Title: Laminated Longbow Help
Post by: Bud B. on August 29, 2010, 01:57:00 PM
I got this long ago and if I remember correctly it came from Bingham or Bohning. Best I can measure it's 7/16 off center for the shelf and my current setup of leather and rug. This seems too much and requires a weak spined arrow. I'd like to trim it down but I'm not sure how far I dare go. It's 64.8# @ 29". Not sure of the handle wood but maybe Brazillian walnut.?

Sorry for the fuzzy pictures. My vision is about the same so it's hard to tell when the camera is focused at these close distances. I'd like to get it down to about 1/4" off center. Will this be too weak for the draw weight and for the wood handle thickness?

Thanks for the help.

Bud

   (http://i45.photobucket.com/albums/f94/Equismith/100_1254.jpg)
   (http://i45.photobucket.com/albums/f94/Equismith/100_1255.jpg)
   (http://i45.photobucket.com/albums/f94/Equismith/100_1256.jpg)
   (http://i45.photobucket.com/albums/f94/Equismith/100_1258.jpg)
   (http://i45.photobucket.com/albums/f94/Equismith/100_1252.jpg)
   (http://i45.photobucket.com/albums/f94/Equismith/100_1253.jpg)
   (http://i45.photobucket.com/albums/f94/Equismith/bow-1.jpg)
Title: Re: Laminated Longbow Help
Post by: Russell S. on August 29, 2010, 02:15:00 PM
with glass accent strips i cut my 1.5" wide risers to 3/4" my bows are all about 50# and i also make a radius on the corner between the shelf and the window to minimize stress focus points. if that was my bow i wouldn't cut it any further since it has no reinforcement in the riser and its a healthy draw weight.
Title: Re: Laminated Longbow Help
Post by: Swissbow on August 29, 2010, 03:42:00 PM
I agree with Russell and wouldn't cut it deeper either. And i suggest you to use proper spined arrows anyway, no matter if your bow is cut to center or not. Because if your arrows are spined to stiff they will hit the target to the right from where you aimed, or to the left if they're to weak. This is said if you're a left hand shooter.
BTW i don't think that you need weak spined arrows with a bow that draws 64.8@29.

----------
Andy
Title: Re: Laminated Longbow Help
Post by: Pat B on August 29, 2010, 04:07:00 PM
weaker spine doesn't mean weaker arrow, just more flexible. You can cut your arrows longer and reduce the spine weight of the arrow by 5# per inch or add a head heavier than a 125gr.
Title: Re: Laminated Longbow Help
Post by: Bud B. on August 29, 2010, 06:22:00 PM
Thanks for the input. I guess I'll leave it be.

I currently have Beman ICS Classic 300 (10.1 gpi on the shaft) and have shot 175gr heads. These arrows wobble way too much and this wobble drastically effects accuracy. Arrows are entering straw bales kinda sideways. Arrows are cut 31" BOP. 4" feathers cut parabolic. Arrows shoot right ( overspined ).

Stu Miller's spine chart suggest arrows spined way under the norm for a 65# bow. I trust the chart if my data I entered is accurate. It recommended 1916 for my 50# @ 28 Bear recurve. My draw is 29". Arrows from the Bear are missiles and fly straight.

I was reluctant to go to such a lightly spined arrow. The chart shows a 29.5" 1916 with a 100gr head or my current 31" cut with a 75gr head would be just about right.

Beaver fur is on the flemish string of the LB.

Thoughts?