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Main Boards => The Bowyer's Bench => Topic started by: razorback on January 25, 2010, 12:21:00 PM

Title: Pyramid Board Bow Questions
Post by: razorback on January 25, 2010, 12:21:00 PM
Ok, I posted in 4est's build along page that I had one in the works and since I found our camera I can give pics with the questions.
First: How is the tiller.

Unbraced.
(http://i648.photobucket.com/albums/uu207/aussiearcher/DSCF0912.jpg)

Braced.
(http://i648.photobucket.com/albums/uu207/aussiearcher/DSCF0900.jpg)

15 Inches.
(http://i648.photobucket.com/albums/uu207/aussiearcher/DSCF0901.jpg)

20 Inches.
(http://i648.photobucket.com/albums/uu207/aussiearcher/DSCF0902.jpg)

24 Inches.
(http://i648.photobucket.com/albums/uu207/aussiearcher/DSCF0903.jpg)

Second: Due to the design of the bow, the straight grain I found runs out the side of the bow at one point. Is this going to be a problem. Seems like it is unavoidable with the sharp taper on this style of bow.

(http://i648.photobucket.com/albums/uu207/aussiearcher/DSCF0905.jpg)
Title: Re: Pyramid Board Bow Questions
Post by: John Scifres on January 25, 2010, 02:24:00 PM
Looks good to me.  That's a good, sweet drawing, no stack tiller design.  It's really become my favorite profile.  Round in the middle, stiffer in the outer third.  6" of non-bending tips.  Since your tips don't bend a whole lot, make sure and reduce mass there by narrowing them as much as possible.
Title: Re: Pyramid Board Bow Questions
Post by: stretch2 on January 25, 2010, 05:07:00 PM
i am no expert but it looks good to me
Title: Re: Pyramid Board Bow Questions
Post by: razorback on January 25, 2010, 05:23:00 PM
Dors the run out look like a problem to anyone.
Title: Re: Pyramid Board Bow Questions
Post by: 4est trekker on January 25, 2010, 06:02:00 PM
The runouts are inevitable.  But, they are offset by the large working area on the back of the bow.  There's so much wood going into tension that the runouts won't become overstressed and fail. (At least in theory.  Sometimes they do fail, but yours look fine to me.)  It is critical that you round over the limbs' edges, however, or the sharp edge will give at the runouts.

Great looking bow, by the way!  Absolutely my favorite profile/tiller, as John said!  Thanks for posting!
Title: Re: Pyramid Board Bow Questions
Post by: razorback on January 25, 2010, 06:57:00 PM
I will get it finished up in the next day or two and post some final pics. Have to shoot a bunch of arrows through it to make sure the tiller stays the same. I think it will come in at around the 45# mark. I plan on using it at the Joan leonard  Memorial Bunny Hunt at the end Febuary, in New York.
Title: Re: Pyramid Board Bow Questions
Post by: bamboo on January 27, 2010, 08:10:00 AM
looks pretty good tony--round the edges good
the rabbits are already shaking!!!
-------------mike
Title: Re: Pyramid Board Bow Questions
Post by: razorback on January 27, 2010, 08:22:00 AM
Thanks Mike. If she don't blow up on me I will definetly bring it along. If nothing else it is wide enough to shield me from some of those legendary briars. I hope.
Title: Re: Pyramid Board Bow Questions
Post by: George Tsoukalas on January 27, 2010, 02:06:00 PM
Tiller looks great. grain looks good. What's your draw length? Jawge
Title: Re: Pyramid Board Bow Questions
Post by: razorback on January 27, 2010, 02:27:00 PM
Draw length on my recurve is 29-29 1/2. I have heard that longbows use a shorter draw. My string broke so have to twist up another one to finish it off. Should get that done tonight.
Title: Re: Pyramid Board Bow Questions
Post by: soopernate on January 27, 2010, 03:59:00 PM
Thats a new one on me...longbows using a shorter draw.  I think my draw is the same no matter what I am shooting whether it be a longbow or a recurve.
Title: Re: Pyramid Board Bow Questions
Post by: George Tsoukalas on January 27, 2010, 04:15:00 PM
I drew a recurve 29 in. I draw my selfbows 26 in. That could be old age.  :)  Jawge
Title: Re: Pyramid Board Bow Questions
Post by: soopernate on January 27, 2010, 04:57:00 PM
Maybe I am just misinterpretting what I am reading(not unusual) I draw to the same anchor point no matter what bow I shoot and use the same form therefore I use the same draw no matter what I shoot...and similarly I use the same length arrows.
Title: Re: Pyramid Board Bow Questions
Post by: razorback on January 27, 2010, 07:31:00 PM
I'm just going on what I read. Havn't had much experience with selfbows or long bows. I will find out soon enough  :)  The bow is 67" ntn 3' at its widest tapering to 1/2" nocks, to be thinned. The Handle/Riser area is about 10" making for about 28" of working limb. I think weight will come in about 45# with sanding and shooting in, which is very close to what I was looking for.
Title: Re: Pyramid Board Bow Questions
Post by: razorback on January 27, 2010, 07:34:00 PM
ot the string twisted up this afternoon, so can continue finishing up tonight. very happy to get the string right. They have been giving me fits to get right but re-read Sam Harpers instructions and realised I was doing too much twisting and that was causing all the poblems. got it now, thanks Sam.
Title: Re: Pyramid Board Bow Questions
Post by: ron w on January 28, 2010, 01:12:00 PM
Looks good to me,hope to meet you at the bunny hunt.....
Title: Re: Pyramid Board Bow Questions
Post by: Sal on February 01, 2010, 10:29:00 PM
Talk about protecting you from briars, 3' wide is a sheild!

I know you meant 3", which is still pretty wide.  Tiller looks good, grain as well.