Recurve # 4: Takedown Prototype.
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Recurve # 4: Takedown Prototype.
I finally got around to finishing the takedown prototype.
The riser is made from pieces of silky oak, spotted gum, Tasmanian blackwood and black wattle from the off-cuts bin.
The limbs are vertical bamboo under .040 brown Bo-Tuff and the limb wedges are black wattle.
Draw weight is 43# @ 28” but I incorrectly marked the limb 48# @ 28” which is from the dlpp.
Brace height is 8” and n to n length is 62”.
Daryl.
The riser is made from pieces of silky oak, spotted gum, Tasmanian blackwood and black wattle from the off-cuts bin.
The limbs are vertical bamboo under .040 brown Bo-Tuff and the limb wedges are black wattle.
Draw weight is 43# @ 28” but I incorrectly marked the limb 48# @ 28” which is from the dlpp.
Brace height is 8” and n to n length is 62”.
Daryl.
"And you must not stick for a groat or twelvepence more than another man would give, if it be a good bow.
For a good bow twice paid for, is better than an ill bow once broken. [Ascham]
“If a cluttered desk is a sign of a cluttered mind, of what, then, is an empty desk a sign?” [Einstein]
I am old enough to make my own decisions....Just not young enough to remember what I decided!....
For a good bow twice paid for, is better than an ill bow once broken. [Ascham]
“If a cluttered desk is a sign of a cluttered mind, of what, then, is an empty desk a sign?” [Einstein]
I am old enough to make my own decisions....Just not young enough to remember what I decided!....
Re: Recurve # 4: Takedown Prototype.
Morning Daryl
Nice f/d curve. Bow would suite me - whilst the is only a start of load rate increasing at the end of the draw it would be of no issue to me at 28".
All.
Have been watching this go together over a long period of time and it is a very nice bow. It is interesting from a custom viewpoint in that the handgrip fits Daryl spot -on and I find it tight.
Nice f/d curve. Bow would suite me - whilst the is only a start of load rate increasing at the end of the draw it would be of no issue to me at 28".
All.
Have been watching this go together over a long period of time and it is a very nice bow. It is interesting from a custom viewpoint in that the handgrip fits Daryl spot -on and I find it tight.
Grahame.
Shoot a Selfbow, embrace Wood Arrows, discover Vintage, be a Trendsetter.
"Unfortunately, the equating of simplicity with truth doesn't often work in real life. It doesn't often work in science, either." Dr Len Fisher.
Shoot a Selfbow, embrace Wood Arrows, discover Vintage, be a Trendsetter.
"Unfortunately, the equating of simplicity with truth doesn't often work in real life. It doesn't often work in science, either." Dr Len Fisher.
Re: Recurve # 4: Takedown Prototype.
nice looking bow, love the limb recurve, love the over all complete look of the bow, a job done well.
- Gringa Bows
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Re: Recurve # 4: Takedown Prototype.
Very nice Daryl,i like it
Re: Recurve # 4: Takedown Prototype.
Nice looking recurve graybeard, looking forward to a field review.
Cheers Macca.
Cheers Macca.
Re: Recurve # 4: Takedown Prototype.
Nice looking Bow Greybeard, will we see it in action at Wisemans shoot. Cheers Roadie.
- stringnstik
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Re: Recurve # 4: Takedown Prototype.
ahh you beat me to it Daryl, congrats. Shame on me I should have finished mine long ago:) Just been too busy and wanted to get more experience up b4 finishing off the one we started.
Now I have to make mine look at least as good as yours :lol
Love your choice woods, absolutely gorgeous.
Now I have to make mine look at least as good as yours :lol
Love your choice woods, absolutely gorgeous.
"I am the arrow..the arrow is me...together as one...I fly to thee"
"the stick maybe crooked and the string hath no form,
then married by bowyer, transforms when first drawn"
"twang....thud"
"the stick maybe crooked and the string hath no form,
then married by bowyer, transforms when first drawn"
"twang....thud"
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Re: Recurve # 4: Takedown Prototype.
Looks good as usual Daryl; nice work. I assume the tips are pretty much static because of the wedges used in the limb tips???
Jeff
Even confusing yourself by using DLPP measurements huh!greybeard wrote:Draw weight is 43# @ 28” but I incorrectly marked the limb 48# @ 28” which is from the dlpp.
Jeff
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Re: Recurve # 4: Takedown Prototype.
great looking bow it is good to see a job turn out so well
Re: Recurve # 4: Takedown Prototype.
Agree with everyone, a very nice looking bow
Shooters get to 50m to shoot, but only a hunter gets inside 20m to hunt.RABBITS (karen) wrote:NUTGRASS >>----> Nobody knows where he came from, & nobody knows how to get rid of him.
Re: Recurve # 4: Takedown Prototype.
Great D/F curve Daryl, And Excellent shaping on the riser, All round very nice piece of work .
Rob
Rob
The shortest distance between two points is a FLATLINE
Email; robnicoll(at)bigpond(dot)com
www.flatlinebows.com.au
Email; robnicoll(at)bigpond(dot)com
www.flatlinebows.com.au
- Guy Layton
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Re: Recurve # 4: Takedown Prototype.
Looks good Daryl... Make sure you bring it down to Robs for a few shots...
Cheers Guy
Cheers Guy
The broadhead used, regardless of how sharp, is no where as important as being able to place it in the correct spot....!
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Re: Recurve # 4: Takedown Prototype.
so Daryl, when are you going to bring it up to show me, 'cause that last one is really good too........
Lovely work.
cheers
sue
Lovely work.
cheers
sue
Re: Recurve # 4: Takedown Prototype.
that is a sweet looking bow GB, it is very appealing to the eye.
IF IT'S FERAL, IT'S IN PERIL!
Re: Recurve # 4: Takedown Prototype.
Morning Mark.
This bow will shoot nice. I shot it in the square so to speak when the handle had a long way to go and it has a bit of punch for its weight.
Good excuse - I must remember that one.stringnstik wrote:ahh you beat me to it Daryl, congrats. Shame on me I should have finished mine long ago:) Just been too busy and wanted to get more experience up b4 finishing off the one we started.
Now I have to make mine look at least as good as yours :lol
This bow will shoot nice. I shot it in the square so to speak when the handle had a long way to go and it has a bit of punch for its weight.
Grahame.
Shoot a Selfbow, embrace Wood Arrows, discover Vintage, be a Trendsetter.
"Unfortunately, the equating of simplicity with truth doesn't often work in real life. It doesn't often work in science, either." Dr Len Fisher.
Shoot a Selfbow, embrace Wood Arrows, discover Vintage, be a Trendsetter.
"Unfortunately, the equating of simplicity with truth doesn't often work in real life. It doesn't often work in science, either." Dr Len Fisher.
Re: Recurve # 4: Takedown Prototype.
Very nice lines!
Re: Recurve # 4: Takedown Prototype.
Thank you for your kind comments.
With the takedown system I can build bows down to 58” off the one form.
I erred on the side of 62” n to n as I did not know what weight the limbs would yield. It is a comfortable weight for an older person to shoot around a field coarse so luck must have been on my side.
Four coats of clear were applied and after allowing three days for the finish to harden it was hand rubbed to a satin finish.
The belly laminations are tapered, but in hindsight after using parallel laminations in recurve #3 parallel laminations would appear to be the better option. With a distance of 13” between the limb fade and tip stiffening the taper is negligible. On recurve #3 the measurement is just over 11”.
Hopefully I will be able to do some comparative testing in the near future.
If you look at the photo of the unbraced bow you will notice that the pivot point is virtually in line with the limbs and with the amount of recurve in the stiffened tips a bow stringer is a necessity to avoid twisting the limbs.
Mark,
I was going to dob you in but my gentle natured side took over. Have you still got the template for the limb angles on the riser?
Once the limbs were trued up to equal dimensions the bow came out with 1/8” positive tiller.
Jeff,
It does not take too much to side track me these days.
The stiffened tips do open a little at full draw.
As we know brace height is measured from the pivot point so logically the draw length should be measured similarly. Unfortunately the A.M.O. system came into being to confuse the issue.
For those who are not familiar with the A.M.O. standards;
“AMO DRAW LENGTH STANDARD
For Manufacturers
Draw length is a specified distance, or the distance at the archer’s full draw, from the nocking point on the string to the pivot point of the bow grip (or the theoretical vertical projection of a tangency line to the pivot point parallel to the string) plus 1 3/4”.
Draw length from pivot point shall be designed at DLPP and shall be called TRUE DRAW LENGTH.
EXAMPLE: 26 1/4” DLPP plus 1 3/4” is the equivalent of 28” draw.
For Dealers and General Use
For practical reasons not requiring precise terms, draw length is the distance, at the archer’s full draw, from the nocking point on the string to the back of the bow at the arrow rest.
EXPLANATION: The standard Manufacturers is consistent with the Bow Weight Standard as related to the pivot point. The DLPP plus 1 3/4” is compatible to previous concepts of draw length.
(See handle illustration.)
Draw length for Dealers and General Use relieves the burden of preciseness not required for general use and facilitates determining arrow length. THIS STANDARD SUPERSEDES THE PREVIOUS STANDARD.”
Rob,
I endeavour to change the shape of my risers so that no two are the same. There is a block of Macassar ebony sitting on my shelf waiting to be turned into a riser. The Black and Decker power files are excellent for removing excess material in a short time.
Ongoing wrist problems mean I won’t be attending Wisemans this time [although the bow may get there], North Albert or Caboolture. The earliest appointment I could get with the specialist is the 20th of April.
Daryl.
With the takedown system I can build bows down to 58” off the one form.
I erred on the side of 62” n to n as I did not know what weight the limbs would yield. It is a comfortable weight for an older person to shoot around a field coarse so luck must have been on my side.
Four coats of clear were applied and after allowing three days for the finish to harden it was hand rubbed to a satin finish.
The belly laminations are tapered, but in hindsight after using parallel laminations in recurve #3 parallel laminations would appear to be the better option. With a distance of 13” between the limb fade and tip stiffening the taper is negligible. On recurve #3 the measurement is just over 11”.
Hopefully I will be able to do some comparative testing in the near future.
If you look at the photo of the unbraced bow you will notice that the pivot point is virtually in line with the limbs and with the amount of recurve in the stiffened tips a bow stringer is a necessity to avoid twisting the limbs.
Mark,
I was going to dob you in but my gentle natured side took over. Have you still got the template for the limb angles on the riser?
Once the limbs were trued up to equal dimensions the bow came out with 1/8” positive tiller.
Jeff,
It does not take too much to side track me these days.
The stiffened tips do open a little at full draw.
As we know brace height is measured from the pivot point so logically the draw length should be measured similarly. Unfortunately the A.M.O. system came into being to confuse the issue.
For those who are not familiar with the A.M.O. standards;
“AMO DRAW LENGTH STANDARD
For Manufacturers
Draw length is a specified distance, or the distance at the archer’s full draw, from the nocking point on the string to the pivot point of the bow grip (or the theoretical vertical projection of a tangency line to the pivot point parallel to the string) plus 1 3/4”.
Draw length from pivot point shall be designed at DLPP and shall be called TRUE DRAW LENGTH.
EXAMPLE: 26 1/4” DLPP plus 1 3/4” is the equivalent of 28” draw.
For Dealers and General Use
For practical reasons not requiring precise terms, draw length is the distance, at the archer’s full draw, from the nocking point on the string to the back of the bow at the arrow rest.
EXPLANATION: The standard Manufacturers is consistent with the Bow Weight Standard as related to the pivot point. The DLPP plus 1 3/4” is compatible to previous concepts of draw length.
(See handle illustration.)
Draw length for Dealers and General Use relieves the burden of preciseness not required for general use and facilitates determining arrow length. THIS STANDARD SUPERSEDES THE PREVIOUS STANDARD.”
Rob,
I endeavour to change the shape of my risers so that no two are the same. There is a block of Macassar ebony sitting on my shelf waiting to be turned into a riser. The Black and Decker power files are excellent for removing excess material in a short time.
Ongoing wrist problems mean I won’t be attending Wisemans this time [although the bow may get there], North Albert or Caboolture. The earliest appointment I could get with the specialist is the 20th of April.
Daryl.
"And you must not stick for a groat or twelvepence more than another man would give, if it be a good bow.
For a good bow twice paid for, is better than an ill bow once broken. [Ascham]
“If a cluttered desk is a sign of a cluttered mind, of what, then, is an empty desk a sign?” [Einstein]
I am old enough to make my own decisions....Just not young enough to remember what I decided!....
For a good bow twice paid for, is better than an ill bow once broken. [Ascham]
“If a cluttered desk is a sign of a cluttered mind, of what, then, is an empty desk a sign?” [Einstein]
I am old enough to make my own decisions....Just not young enough to remember what I decided!....
- Stickbow Hunter
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- Joined: Sat Jul 26, 2003 8:33 pm
- Location: Maryborough Queensland
Re: Recurve # 4: Takedown Prototype.
Thanks for the extra info Daryl.
I hope you get some positive news about your wrists when you finally get to see the specialist.
Jeff
Now that will be extra nice I should think. It is one of my favourite woods.greybeard wrote:There is a block of Macassar ebony sitting on my shelf waiting to be turned into a riser.
I hope you get some positive news about your wrists when you finally get to see the specialist.
Jeff
Re: Recurve # 4: Takedown Prototype.
Very nice top job on a awesome looking bow
good judgement comes from experience and experience comes from poor judgement
Nothing is easy. That's why it's called hunting, and not killing
Nothing is easy. That's why it's called hunting, and not killing
Re: Recurve # 4: Takedown Prototype.
Very nice looking bow with smooth force/ draw curve too.
nil illigitimo in desperandum carborundum
razorbows.com
razorbows.com
Re: Recurve # 4: Takedown Prototype.
Daryl
This bow has a very aesthetically pleasing shape. Very pretty
The gentle transition of the timber is compelling.
The draw curve says a lot as well, you really make a nice bow
The simplicity of the Riser really works well you are a credit to your Art
Hazard
This bow has a very aesthetically pleasing shape. Very pretty
The gentle transition of the timber is compelling.
The draw curve says a lot as well, you really make a nice bow
The simplicity of the Riser really works well you are a credit to your Art
Hazard
Politics is a game played by dishonest people to gain an unfair advantage!
Never under estimate the strength of a cornered coward.
Everyone is entitled to be stupid, but some abuse the privilege.
http://www.bowmanstaxidermy.com.au
Never under estimate the strength of a cornered coward.
Everyone is entitled to be stupid, but some abuse the privilege.
http://www.bowmanstaxidermy.com.au
Re: Recurve # 4: Takedown Prototype.
That's one seriously NICE bow.
Cheers
Rob Browne
Its OK to make a mistake,
Just try not to make the same one twice.........
Rob Browne
Its OK to make a mistake,
Just try not to make the same one twice.........
Re: Recurve # 4: Takedown Prototype.
The more I look at it, it just seems to get better and betterer. It really is a stunning bow in appearance and with terrific flowing lines. Just one thought,how do you think the silky oak with its open grain structure will pan out. I realise its only a 'cap' piece so to speak. Congrats on another fantastic example of great craftmanship Daryl.
nil illigitimo in desperandum carborundum
razorbows.com
razorbows.com
Re: Recurve # 4: Takedown Prototype.
Bob,
I do not have any concerns regarding the integrity of the silky oak/beef wood but on this occasion I feel it does not blend with the other timbers used in the riser.
From the outset this riser [built from scrap] was intended to be used as a test bed for subsequent limbs.
The upper section of the F/D curve is fine; it is the lower section that needs improvement if possible.
Daryl.
I do not have any concerns regarding the integrity of the silky oak/beef wood but on this occasion I feel it does not blend with the other timbers used in the riser.
From the outset this riser [built from scrap] was intended to be used as a test bed for subsequent limbs.
The upper section of the F/D curve is fine; it is the lower section that needs improvement if possible.
Daryl.
"And you must not stick for a groat or twelvepence more than another man would give, if it be a good bow.
For a good bow twice paid for, is better than an ill bow once broken. [Ascham]
“If a cluttered desk is a sign of a cluttered mind, of what, then, is an empty desk a sign?” [Einstein]
I am old enough to make my own decisions....Just not young enough to remember what I decided!....
For a good bow twice paid for, is better than an ill bow once broken. [Ascham]
“If a cluttered desk is a sign of a cluttered mind, of what, then, is an empty desk a sign?” [Einstein]
I am old enough to make my own decisions....Just not young enough to remember what I decided!....
Re: Recurve # 4: Takedown Prototype.
Just going by the photos the beefwood seems to blend quite nicely to my eye.Re the draw curve, the figures suggest it maintains a fairly even rate approx 2.5lb per in of draw until around 28'' draw.Not too bad for a 'bitza'?
nil illigitimo in desperandum carborundum
razorbows.com
razorbows.com
Re: Recurve # 4: Takedown Prototype.
Very nice Daryl.
I think the timbers work well together. A picture at full draw would be great if you happen to take one.
Cheers........ Rod
I think the timbers work well together. A picture at full draw would be great if you happen to take one.
Cheers........ Rod
Re: Recurve # 4: Takedown Prototype.
Hi Rod,
I finally got a photo of the bow at full draw.
The string to tip angle is still low and you will notice that the stiffened tips open a little more at full draw. I think this explains the slight deviation in the f/d line at the top end of the graph.
Daryl.
I finally got a photo of the bow at full draw.
The string to tip angle is still low and you will notice that the stiffened tips open a little more at full draw. I think this explains the slight deviation in the f/d line at the top end of the graph.
Daryl.
"And you must not stick for a groat or twelvepence more than another man would give, if it be a good bow.
For a good bow twice paid for, is better than an ill bow once broken. [Ascham]
“If a cluttered desk is a sign of a cluttered mind, of what, then, is an empty desk a sign?” [Einstein]
I am old enough to make my own decisions....Just not young enough to remember what I decided!....
For a good bow twice paid for, is better than an ill bow once broken. [Ascham]
“If a cluttered desk is a sign of a cluttered mind, of what, then, is an empty desk a sign?” [Einstein]
I am old enough to make my own decisions....Just not young enough to remember what I decided!....
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Re: Recurve # 4: Takedown Prototype.
Hi Daryl, I know I have asked about string to limb relationship when it exceeds 90 deg and would it cause stack. I have read elsewhere that it does. Is there any way of testing whether the tips opening is efficient or whether they are doing so because the limb cant bend any further? Perhaps reducing the core taper a bit more may increase performance? Steve
Re: Recurve # 4: Takedown Prototype.
Hi Steve,
I believe that the stiffened tips offer a better mechanical advantage as the bow nears full draw.
Korean bows appear to have relatively short stiff tips and at the top end of the scale are the rigid tips [siyaha’s] as seen in Asiatic styled bows.
With regards to core taper the one piece recurve shown in the chart has two parallel laminations and the takedown has one parallel and one tapered lamination.
Although the one piece stored a little more energy the take down produced higher arrow velocities. Both bows were tested using the same set of arrows.
There are more questions than answers at present but more testing on different limb configurations may yield results.
Daryl.
I believe that the stiffened tips offer a better mechanical advantage as the bow nears full draw.
Korean bows appear to have relatively short stiff tips and at the top end of the scale are the rigid tips [siyaha’s] as seen in Asiatic styled bows.
With regards to core taper the one piece recurve shown in the chart has two parallel laminations and the takedown has one parallel and one tapered lamination.
Although the one piece stored a little more energy the take down produced higher arrow velocities. Both bows were tested using the same set of arrows.
There are more questions than answers at present but more testing on different limb configurations may yield results.
Daryl.
"And you must not stick for a groat or twelvepence more than another man would give, if it be a good bow.
For a good bow twice paid for, is better than an ill bow once broken. [Ascham]
“If a cluttered desk is a sign of a cluttered mind, of what, then, is an empty desk a sign?” [Einstein]
I am old enough to make my own decisions....Just not young enough to remember what I decided!....
For a good bow twice paid for, is better than an ill bow once broken. [Ascham]
“If a cluttered desk is a sign of a cluttered mind, of what, then, is an empty desk a sign?” [Einstein]
I am old enough to make my own decisions....Just not young enough to remember what I decided!....
-
- Posts: 3116
- Joined: Tue Jan 30, 2007 3:29 pm
- Location: BLUE MOUNTAINS
Re: Recurve # 4: Takedown Prototype.
Thanks for the detailed reply Daryl. I have had a beer tonight after working easter so I will read your reply in better detail tomorrow when I can better understand it . Steve