Hey guys just finished my first bow!!! Had a blast learned a lot thanks to you guys.
So as I shot it tonight I noticed it felt real light and was dogging the arrows, slow enough to where I wouldn't hunt whitetails with it. Needless to say I was a little disappointed. So I took it in side and put it on the scale and realized I'm roughly 12lbs under where I wanted to be.
How much should I pike the limbs to try and gain my 12lbs back? And is 12lbs gonna give me a huge difference in arrow speed? Thanks guys for all your help will post pics after I pike/finish.
Weren't you checking the weight as you tillered the bow? Will you post pics, braced, unbraced and full draw?
Pat I really didn't do much tillering it's a glass bow and everyone said you don't really have to tiller glass, so I didn't haha
I would post pics bud haven't quite figured out photo bucket
My problem was everything slipped during glue up so automatically I went from 1.5" to 1.25" also I was going for a 64" ntn but the guys said I should start with a 66 ntn cause they thought my stack was to thick possibly, so 66 is where she sits now.
Being a glass bow and if your draw is 28 inches or less I'd suggest cutting off 2 inches from each end and see what you get.
Won't be 12 pounds but should better.
If your draw is less than 28 might be able to go farther.
Cutting an inch off each end should net you ~5 lbs weight gain; 2" each end ~10 lbs. If it were me, I'd take 2" off each end and use a bastard string to check the new draw weight before cutting nocks.
It is going to depend on what the bow weight is now--lighter bows will gain less per inch than than heavier ones. I think the 5 lb. rule might be for a bow already in the 50 lb. range.
Use this formula it will get you real close to your desired weight.
EXAMPLE:
The bow is 68" long,45 lb.@ 28",you want 55 lb @ 28"
55lb divided by 45 lb = 1.22(1.22%)
Lose the 1 (100%)
0.22 divided by 5 = 0.044
0.044 x 68" = 2.99"
2.99" divided by 2 = 1.495
So take 1.495" (almost 1 1/2") off each end.
To find out what a given reduction in length will produce:
EXAMPLE: The bow is 68" long,45 lb. @ 28",you only want to take of 2" (1"
off each end)
Take off 2" for a 66"bow
Short Way
1" x 2 = 2" 66" = 1.145 x lbs
2" divided by 68" =0.029 64" = 1.295 x lbs
0.029 x 5 = 0.145 (14.5%) 62" = 1.440 x lbs
Add 1 (100%) for 1.145 (114.5%) 60" = 1.590 x lbs
1.145 x 45 lb =51.525 lb (just over 51 1/2 lb)
Take off 4 " for a 64" bow
4" divided by 68" =.059
.059 x 5 = .295
Add 1 for 1.295
1.295 x 45lb = 58.275
Take of 6" for a 62" bow
6" divided by 68" = .088
.088 x 5 = .44
Add 1 for 1.44
1.44 x 45lb = 64.8
Take of 8" for a 60" bow
8" divided by 68" = .118
.118 x 5 = .59
Add 1 for 1.59
1.59 x 45lb = 71.55
A piece of 1/8" braided nylon will make a good starter string.Dont use the twisted nylon will stretch real bad.
You could laminate another .030 glass on the belly side and pick up about #15.