Aloha all,
Been reading these forums since I attempted my first bamboo backed ipe in 2014, and I really appreciate all the knowledge that has been shared over the years. Unfortunately, that bow ended up failing, as did several others since then. Even more so lately, so I decided to make the simplest bow I possibly could with the materials that I have easy and affordable access to. Less things to go wrong, and let's you get back to basics a little. No riser, fades, power lams, tip overlays, tapered cores, etc. Just a belly, a back, and a bend.
Anyways, I couldn't find a lot of information on how to build the specific design I had in mind: Bamboo backed ipe, straight limbs, bendy handy, and as short as possible. I don't normally like to share things publicly, but this bow came out so awesome that I decided to share in case someone else would like to try a similar design and just needs some data. I hope someone can find this as useful as I have found the information all of you have shared.
Bamboo backing is slightly less the 1/8" near the middle, tapering (probably unevenly) to about 1/16" at the tips. Ipe belly started at about 1/2". Glued in about 3/8" of perry reflex, ended up with about 1/2" of deflex from set. Belly is pretty well rounded, particularly the outer thirds of the bow.
This thing is SILENT. I think I might actually take the string silencers off, as the rush of air through the puffs makes more noise than the rest of the bow. I shot it a few times without the silencers when I first made the string and was really impressed with the lack of vibration. I guess I added them out of habit.
Mahalo for reading and for all of the shared knowledge. Can't wait to get a few more arrows built and take this bad boy out for some wild pig or goat. Should be a heck of a lot easier to handle in the thick vegetation than my 64" longbow that I normally hunt with. Feel free to comment on design, tiller, etc. I think I have a new addiction... Can't wait to make a better one.
Synopsis:
Bamboo backed ipe
52" ntn
~50#@26"
1 1/8" wide to 3" from center, then straight taper to 1/2" tips.
Just shy of 5/8" thick at the center, 3/8" thick at the tips
Braced:
Unbraced:
Full draw:
Tips:
Belly view of profile: