Recent Posts

Pages: 1 2 3 [4] 5 6 ... 10
31
Bows / Re: Common mistakes in deflex/reflex bows?
« Last post by willie on December 16, 2025, 11:53:11 pm »
Quote from: Bob Barnes on December 16, 2025, 11:25:57 pm
Quote from: willie on December 16, 2025, 10:49:14 pm
Quote from: Bob Barnes on December 16, 2025, 10:20:09 pm
Quote from: Aussie Yeoman on December 16, 2025, 10:09:11 pm
https://www.virtualbow.org/

It's an independent program that you download and install. It's really easy to install and quite easy to use, with a fairly shallow and short learning curve.

I have win 11 and get a warning about it "not being commonly downloaded.  Be sure that you trust the link"   It did download something but the file is called "unconfirmed download" and it won't open...

does  your file name end with  .crdownload?    if so try again

Yes... I have hit 'download 5 or 6 times and the file is the same every time.  "Unconfirmed(random number).crdownload"
Thank you for helping...

windows 11 may be too helpful for its own good
try checking these settings
https://www.supportyourtech.com/tech/how-to-allow-downloads-on-windows-11-a-step-by-step-guide/
32
Bows / Re: Common mistakes in deflex/reflex bows?
« Last post by Aussie Yeoman on December 16, 2025, 11:48:05 pm »
Nah, unfortunately it doesn't account for set. Alan Case's spreadhseet allows a bow to be 'pre-stressed' to account for set.

If One happens to have bend test data, then One can predict how much set the bow will take at a given stress level. That's what I've done with my D/R bows above, and anticipate they'll take between 3/4 and 1" set once shot in.

Quote from: Badger on December 16, 2025, 10:20:38 pm
Several questions about the programs. Do they allow for some set at given stresses? Does increased set affect efficiency or FDC? If so, by how much? Are there any allowances made for working part of the limb length? Efficiency is lost in working limb length and increases as the working limb shortens, even though strain figures might go up.
33
Bows / Tillering advice: This thing is kinkier than...
« Last post by WhistlingBadger on December 16, 2025, 11:46:35 pm »
...I won't finish the title because this is a family friendly forum and all.

Same bow in this thread, if you want to see the early work:
http://www.primitivearcher.com/smf/index.php/topic,73411.msg1029915.html#msg1029915

Got it almost to full draw. 
Unbraced:


25"



Thoughts?

Also:  It's going to come in about 5-6# underweight for elk hunting.  What would adding another layer of sinew do to the draw weight, do you think? 
I'd really like to go whack an elk with this thing.

Thanks!
Thomas
34
Bows / Re: Common mistakes in deflex/reflex bows?
« Last post by Bob Barnes on December 16, 2025, 11:25:57 pm »
Quote from: willie on December 16, 2025, 10:49:14 pm
Quote from: Bob Barnes on December 16, 2025, 10:20:09 pm
Quote from: Aussie Yeoman on December 16, 2025, 10:09:11 pm
https://www.virtualbow.org/

It's an independent program that you download and install. It's really easy to install and quite easy to use, with a fairly shallow and short learning curve.

I have win 11 and get a warning about it "not being commonly downloaded.  Be sure that you trust the link"   It did download something but the file is called "unconfirmed download" and it won't open...

does  your file name end with  .crdownload?    if so try again

Yes... I have hit 'download 5 or 6 times and the file is the same every time.  "Unconfirmed(random number).crdownload"
Thank you for helping...
35
Bows / Re: Common mistakes in deflex/reflex bows?
« Last post by willie on December 16, 2025, 10:56:36 pm »
Quote from: Badger on December 16, 2025, 10:20:38 pm
Several questions about the programs. Do they allow for some set at given stresses? Does increased set affect efficiency or FDC? If so, by how much? Are there any allowances made for working part of the limb length? Efficiency is lost in working limb length and increases as the working limb shortens, even though strain figures might go up.

set is not taken into account with the program.   It is up to you to choose a MOE value for the materiel used,  and review your design to see that stresses remains below the level you feel set will occur at.
36
Bows / Re: Common mistakes in deflex/reflex bows?
« Last post by willie on December 16, 2025, 10:49:14 pm »
Quote from: Bob Barnes on December 16, 2025, 10:20:09 pm
Quote from: Aussie Yeoman on December 16, 2025, 10:09:11 pm
https://www.virtualbow.org/

It's an independent program that you download and install. It's really easy to install and quite easy to use, with a fairly shallow and short learning curve.

I have win 11 and get a warning about it "not being commonly downloaded.  Be sure that you trust the link"   It did download something but the file is called "unconfirmed download" and it won't open...

does  your file name end with  .crdownload?    if so try again
37
Bows / Re: Common mistakes in deflex/reflex bows?
« Last post by Badger on December 16, 2025, 10:20:38 pm »
 Several questions about the programs. Do they allow for some set at given stresses? Does increased set affect efficiency or FDC? If so, by how much? Are there any allowances made for working part of the limb length? Efficiency is lost in working limb length and increases as the working limb shortens, even though strain figures might go up.
38
Bows / Re: Common mistakes in deflex/reflex bows?
« Last post by Bob Barnes on December 16, 2025, 10:20:09 pm »
Quote from: Aussie Yeoman on December 16, 2025, 10:09:11 pm
https://www.virtualbow.org/

It's an independent program that you download and install. It's really easy to install and quite easy to use, with a fairly shallow and short learning curve.

I have win 11 and get a warning about it "not being commonly downloaded.  Be sure that you trust the link"   It did download something but the file is called "unconfirmed download" and it won't open...
39
Bows / Re: Common mistakes in deflex/reflex bows?
« Last post by Aussie Yeoman on December 16, 2025, 10:09:11 pm »
https://www.virtualbow.org/

It's an independent program that you download and install. It's really easy to install and quite easy to use, with a fairly shallow and short learning curve.
40
Bows / Re: Straight bow, optimal tiller profile (VirtualBow)?
« Last post by willie on December 16, 2025, 09:28:18 pm »
Quote from: Tuomo on December 16, 2025, 04:18:20 pm
Also, the more whip-tillered the bow is, the more efficient it becomes (the reason here being lower tip mass)

Although the tip area with the steep taper is somewhat lighter, I dont think those FPS are attainable because the max strains in bow 9 are 73% higher than bow 4
Pages: 1 2 3 [4] 5 6 ... 10