Author Topic: Increasing longbow weight  (Read 641 times)

Offline algstick

  • Trad Bowhunter
  • **
  • Posts: 48
Increasing longbow weight
« on: November 25, 2016, 05:00:00 PM »
I just finished my first glass laminated longbow build and I missed weight a good bit, it is a 66" asl  with 7/8" setback if I cut it down to 64" or 63" how much might I gain?
It is bamboo core with .050" back and belly fiberglass and a 15 1/2" riser. 1 1/8" wide at the fades and 1/2" at the nocks. I made a mistake in ordering the core lams but just went ahead with the build. It turned out just fine but just lighter than I wanted

Online jess stuart

  • Trad Bowhunter
  • **
  • Posts: 1722
Re: Increasing longbow weight
« Reply #1 on: November 25, 2016, 05:38:00 PM »
If you only want to gain a few pounds you can cut a half to one inch off each end of the bow, called piking.  You could also possibly glue an additional piece of glass on the limbs.  I have glued glass down a couple of times to raise weight and it worked out well.  I just cured at a lower temperature the second time.  Good luck hope you get her where you would like her to be.

Online Roy from Pa

  • Administrator
  • Trad Bowhunter
  • ****
  • Posts: 20686
Re: Increasing longbow weight
« Reply #2 on: November 25, 2016, 05:56:00 PM »
For each inch you cut off both limb tips, you gain about 4 to 5 pounds.

Offline mikkekeswick

  • Trad Bowhunter
  • **
  • Posts: 988
Re: Increasing longbow weight
« Reply #3 on: November 26, 2016, 02:54:00 AM »
1% of length = 5% draw weight increase.

Offline Wolftrail

  • Trad Bowhunter
  • **
  • Posts: 1152
Re: Increasing longbow weight
« Reply #4 on: November 28, 2016, 06:37:00 PM »
Piking can be tricky. Have done it a few times without any real success. Why.? after the pike I had to re tiller the bow and the weight seemed to end up at square one again. If not then it BROKE.   :dunno:  

The old saying if she aint broke dont fix it.!

Offline LittleBen

  • Trad Bowhunter
  • **
  • Posts: 2970
Re: Increasing longbow weight
« Reply #5 on: November 28, 2016, 07:54:00 PM »
Quote
Originally posted by Wolftrail:
Piking can be tricky. Have done it a few times without any real success. Why.? after the pike I had to re tiller the bow and the weight seemed to end up at square one again. If not then it BROKE.    :dunno:    

The old saying if she aint broke dont fix it.!
I found the same thing with most wood bows if I'm only picking a bit. Did pike one from 72 to 58" and that sure went up in weight.

Anyway, since he's talking about a glass bow, I'd imagine he will have less retillering to do and will gain a few pounds.

Offline algstick

  • Trad Bowhunter
  • **
  • Posts: 48
Re: Increasing longbow weight
« Reply #6 on: November 28, 2016, 10:06:00 PM »
Thanks for the input guys
I am going to finish it out and give it to my daughter or use it for a form training bow.
Gonna order more material and build another.
I learned a lot from this one and it shoots well too. It ended up a tad under 40# @ 26"
I would post a few pics if I could figure out how

Offline algstick

  • Trad Bowhunter
  • **
  • Posts: 48
Re: Increasing longbow weight
« Reply #7 on: November 29, 2016, 05:37:00 PM »
Thanks for the input guys
I am going to finish it out and give it to my daughter or use it for a form training bow.
Gonna order more material and build another.
I learned a lot from this one and it shoots well too. It ended up a tad under 40# @ 26"
I would post a few pics if I could figure out how

Users currently browsing this topic:

0 Members and 1 Guest are viewing this topic.
 

Contact Us | Trad Gang.com © | User Agreement

Copyright 2003 thru 2024 ~ Trad Gang.com ©