Primitive Archer

Main Discussion Area => Bows => Topic started by: uncleduck on October 05, 2012, 11:35:22 pm

Title: newest contraption
Post by: uncleduck on October 05, 2012, 11:35:22 pm
Here is the newest contraption I have come up with. 
Not exactly "primitive" but I figured I'd show it anyway

3pc takedown
Osage limbs from some wood from Cipriano (thanks!)
Elk shed riser
Muley antler tip overlays
63" ntn
Pulling right around 60# @ 28"
Last 6-7" of the tips are stiff
added about 2.5" of reflex to each limb before mounting @ around 7 degrees, limbs are holding about 1.75 of the original reflex
still debating on skins or not and have to put some sort finish on
IDK if my other bows are just slow, but this things really seems to spit arrows hard.
(http://i392.photobucket.com/albums/pp9/dwilckens/IMGP0924.jpg)
(http://i392.photobucket.com/albums/pp9/dwilckens/IMGP0925.jpg)
(http://i392.photobucket.com/albums/pp9/dwilckens/IMGP0928.jpg)
(http://i392.photobucket.com/albums/pp9/dwilckens/IMGP0929.jpg)
(http://i392.photobucket.com/albums/pp9/dwilckens/IMGP0930.jpg)

Title: Re: newest contraption
Post by: Cloudfeather on October 05, 2012, 11:40:39 pm
Wow. That's very ingenious and a nice classic spin on a takedown. Really diggin' it.
Title: Re: newest contraption
Post by: JW_Halverson on October 05, 2012, 11:41:41 pm
No effing-glass, no wheels, NO PROBLEM! 

Cool!
Title: Re: newest contraption
Post by: raghorns on October 06, 2012, 10:14:18 am
Very nice!
Title: Re: newest contraption
Post by: blackhawk on October 06, 2012, 10:19:16 am
Always like seeing something different  :)

I might as well ask the question since I am sure someone else is going to ask.

How did you make it to align and keep your limbs in line? I assume you drilled a hole and glued a threaded female insert into the riser for the bolts,and did you drill a hole and put a male pin in the riser as well to make sure the limbs(and drilled same size female hole into the limbs) aligned everytime in the same spot?
Title: Re: newest contraption
Post by: H Rhodes on October 06, 2012, 10:54:01 am
That's awesome! I would like to see some close ups of the area where the limbs connect.... unless there is a Patent Pending.....
Title: Re: newest contraption
Post by: lesken2011 on October 06, 2012, 11:27:45 am
Nice job, Duck! Looks like it turned out good!!
Title: Re: newest contraption
Post by: missilemaster on October 06, 2012, 11:47:23 am
That tiller looks beautiful man. Great job
Title: Re: newest contraption
Post by: JW_Halverson on October 06, 2012, 02:25:48 pm
Hehehe, if it walks like a duck, quacks like a duck....
Title: Re: newest contraption
Post by: DennisM on October 06, 2012, 02:46:03 pm
I like it,  more pics please
Title: Re: newest contraption
Post by: coaster500 on October 06, 2012, 03:45:05 pm
Coooooooool!!!
Title: Re: newest contraption
Post by: tattoo dave on October 06, 2012, 08:42:11 pm
Super cool!!! I always wanted to try a takedown. Nice work.

Tattoo Dave
Title: Re: newest contraption
Post by: uncleduck on October 06, 2012, 11:43:09 pm
Thanks for all the nice comments guys.

When I picked up this elk shed that I had lying around it just felt too perfect in hand not to make it into a riser. After cutting it to the length I wanted, I started doing a little searching online for takedown angles and ended up deciding on 7 degrees bc I wasn't going to put recurved limbs on. 
I marked the angles I wanted to cut on to the wide face of a 2x6 and then fabbed up a clamping system with 2 pieces of scrap wood with V's cut in them and some long bolts, to clamp the elk riser to the 2x6 and still have a nice flat bottom to the other wide side of the 2x6 (Let me know it know if that doesn't make sense). I then used a buddies sliding chop saw set at 7 degrees to cut the angled portions where the limbs would be seated. By doing it this way I was making sure each cut was in the same "plane" and not introducing any limb twist compared to the other limb.
As far as securing the limbs, I had my doubts about the screw-in inserts and if they would pull out under that much tension and the fact that they would be screwed into mostly the porous inner portion of the antler. I opted to drill through from the back of the riser and use T-nuts instead, thinking that option might be stronger (maybe it would've been fine the other way also IDK). I held the limb where I wanted to mount it and drilled a small pilot hole through the limb and riser. I then went back and widened the hole through the limb to fit a bronze sleeve in it and widened the hole from the belly side of the riser to slide the T nut in. I then measured out and drilled a hole further toward the end of the riser to insert a steel pin (1/4" dia) to keep the limb from moving side to side (these holes only go into the riser and limb about 1/4 inch) . Also did this on the limb and inserted an aluminum sleeve into the limb for the pin to slide into. Glued the pin into the riser.
After test fitting all of that, I wanted to strengthen the porous portions of the antler, so I coated it with a low viscosity casting resin that really soaked into the antler well in those porous parts.
I then put it all together. Obviously I now had two deep holes in the riser from the Belly side where each limb bolt went through the t-nuts. From the backside, I put a VERY thin layer of clay around the exposed bolt and filled the holes with the same casting resin. After it was all dry, I removed the limb bolts and was able to scrape out the dried clay from the "back" side.

I am at the point now where I have to decide what I want to do with the two circles of casting resin that are exposed on the belly side. I can either blend them in with the antler (have experience with a little taxidermy work doing this) or fill them with Osage saw dust or some other material and super glue as little accent pieces, maybe even make them into more interesting shapes then just circles.

That is where I'm at now. Like I said earlier, I am still debating skins or not and what type of finish for the limbs.
Forgot to mention before that it has a small shelf filed in to the riser with sheared beaver for a rest liner.

Also added a very thin piece of leather between the limbs and the riser as a dampener/cushion. Got that idea from a post on takedowns here on PA (bubby's bow I believe).
Title: Re: newest contraption
Post by: uncleduck on October 06, 2012, 11:44:21 pm
Thats a lot of writing haha. Let me know if any of that needs to be explained better.
Title: Re: newest contraption
Post by: mullet on October 07, 2012, 12:30:33 am
Nice set up, hows it shoot? James Parker, robustus on this site sells a bamboo backed and belly three piece like that.
Title: Re: newest contraption
Post by: uncleduck on October 07, 2012, 11:23:15 am
I had seen pictures of someone else doing glass bows witht the elk riser, so I knew it was possible.  This one hits a lot harder and shoots flatter than my other bows Ive made. I just have to get used to the higher draw weight. At this point Im happy with how it shoots, and would rather work myself up to getting used to the weight through more practice than dropping the draw weight.