Primitive Archer

Main Discussion Area => Bows => Topic started by: lebhuntfish on August 17, 2014, 02:11:37 am

Title: Building a reflex / deflex caul help needed
Post by: lebhuntfish on August 17, 2014, 02:11:37 am

I have been working on a reflex / deflex caul and have modified my original design because I had too much deflex in it and the form and it was too long. I don't have access to a bow that I could trace. And i'm just going by my own thought of what it should look like. I like the reflex part but not sure about the deflex part of it. I thinh it should have more "swoop" to the center. What do you think, any suggestions, ideas, input or other would be great. Here is what I have so far.
(http://i1335.photobucket.com/albums/w668/lebhuntfish1/Mobile%20Uploads/2014-08/20140816_172613_zpspoqz6a0z.jpg) (http://s1335.photobucket.com/user/lebhuntfish1/media/Mobile%20Uploads/2014-08/20140816_172613_zpspoqz6a0z.jpg.html)
This is the original plan before I cut it down.
(http://i1335.photobucket.com/albums/w668/lebhuntfish1/Mobile%20Uploads/2014-08/20140813_202833_zps80b4j7zr.jpg) (http://s1335.photobucket.com/user/lebhuntfish1/media/Mobile%20Uploads/2014-08/20140813_202833_zps80b4j7zr.jpg.html)
(http://i1335.photobucket.com/albums/w668/lebhuntfish1/Mobile%20Uploads/2014-08/20140813_185857_zps0e4w6yez.jpg) (http://s1335.photobucket.com/user/lebhuntfish1/media/Mobile%20Uploads/2014-08/20140813_185857_zps0e4w6yez.jpg.html)

Title: Re: Building a reflex / deflex caul help needed
Post by: GB on August 17, 2014, 03:57:13 am

I've only made a few R/D longbows (all tri-lams) and I'm no expert, so take this with a few grains of salt.  Lately I'm leaning more toward less deflex and more reflex for that type of profile.  The form I made is 1 1/2" deep at the deflex part.  I'm thinking about building it up so it's only 3/4" for the next one I make.  Here's my form and the last tri-lam I made with it.  The bow is hickory backed osage with a cherry core, 66" long.

(http://i376.photobucket.com/albums/oo207/okdoak/hybridform1_zps32147bbe.png)

(http://i376.photobucket.com/albums/oo207/okdoak/trilam1_zps105fbef6.png)

(http://i376.photobucket.com/albums/oo207/okdoak/trilam3_zps751ec802.png)

I made a recurve form with way, way too much deflex in it.  Since then, I've gone to putting just a little deflex in recurves.  I just filled in my form with a couple of blocks.

(http://i376.photobucket.com/albums/oo207/okdoak/recurve2_zps56faf11e.png)

Title: Re: Building a reflex / deflex caul help needed
Post by: lebhuntfish on August 17, 2014, 04:41:23 pm

Thanks buddy,  from the looks of your form I need to take some of the "hump" off of the reflex part of my caul. Patrick

Title: Re: Building a reflex / deflex caul help needed
Post by: GB on August 17, 2014, 05:47:07 pm

Maybe.  It's kind of a guessing game.  My take on it is you just don't want to put too much deflex into it.  IMHO you'll have a snappier shooting bow if the shape of your form will make a bow with the tips a bit in front of the handle after it's shot in.  But I'm still learnin' here, too.  :)  Good luck on your bow!

Title: Re: Building a reflex / deflex caul help needed
Post by: lebhuntfish on August 17, 2014, 06:03:02 pm

Thanks again GB. Patrick

Title: Re: Building a reflex / deflex caul help needed
Post by: lebhuntfish on August 18, 2014, 11:25:24 pm

Any other info guys!

Title: Re: Building a reflex / deflex caul help needed
Post by: JoJoDapyro on August 19, 2014, 12:22:28 am

Mine is just a deflex caul, I pegged it with 3/8 dowels to use with inner tube rubber bands. I have found that a good quality twine woven in an X pattern seems to work as well. But, I'm a noob.

Title: Re: Building a reflex / deflex caul help needed
Post by: GB on August 19, 2014, 05:04:03 am

Patrick, did you see the other thread on R/D cauls?  Will H posted some pictures of a really good looking caul that he uses.  Check it out...