Primitive Archer

Main Discussion Area => Bows => Topic started by: maitus on March 05, 2020, 07:35:49 am

Title: Sinew backed lilac bow
Post by: maitus on March 05, 2020, 07:35:49 am
Hi!
I didn't have dry staves for a long time and so I didn't make any bow and there was nothing to post as well :).

Lilac D shape belly
the widest part 1 inch
60'' by the bow 58'' string
44 pounds at 27''
4 layers of sinew covered with goat skin
tru oil

She is actually made like a hornbow. Bamboo core and elm+plam sijahs. Before tillering she had 18cm of reflex and  after tillering holding 12cm of reflex. I should have given more reflex because it feels like the draw can be much longer but my hands are short :).
Title: Re: Sinew backed lilac bow
Post by: maitus on March 05, 2020, 07:43:14 am
Profile
Title: Re: Sinew backed lilac bow
Post by: maitus on March 05, 2020, 07:44:11 am
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Title: Re: Sinew backed lilac bow
Post by: maitus on March 05, 2020, 07:44:48 am
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Title: Re: Sinew backed lilac bow
Post by: maitus on March 05, 2020, 07:45:31 am
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Title: Re: Sinew backed lilac bow
Post by: maitus on March 05, 2020, 07:46:20 am
My fastest
Title: Re: Sinew backed lilac bow
Post by: maitus on March 05, 2020, 07:59:40 am
...
Title: Re: Sinew backed lilac bow
Post by: High-Desert on March 05, 2020, 08:35:25 am
Great looking bow! Good job!
Title: Re: Sinew backed lilac bow
Post by: High-Desert on March 05, 2020, 08:36:22 am
Do you have any full draw pictures?
Title: Re: Sinew backed lilac bow
Post by: maitus on March 05, 2020, 08:45:15 am
Not yet, but will be. I couldn't  make them alone :). And thank You!
Title: Re: Sinew backed lilac bow
Post by: maitus on March 05, 2020, 08:50:11 am
Crony is made with 493.8355gr arrow
Title: Re: Sinew backed lilac bow
Post by: bradsmith2010 on March 05, 2020, 09:09:29 am
Nice congrats,,.if I understand the kg...the bow is shooting over 200 fps with arrow that is over 10 gpp
Title: Re: Sinew backed lilac bow
Post by: maitus on March 05, 2020, 09:13:23 am
Nice congrats,,.if I understand the kg...the bow is shooting over 200 fps with arrow that is over 10 gpp
Thank You! Its 44 pounds
Title: Re: Sinew backed lilac bow
Post by: maitus on March 05, 2020, 09:17:34 am
How to calculate gpp?
Title: Re: Sinew backed lilac bow
Post by: bradsmith2010 on March 05, 2020, 09:19:52 am
How long is it
Title: Re: Sinew backed lilac bow
Post by: maitus on March 05, 2020, 09:21:09 am
60''
Title: Re: Sinew backed lilac bow
Post by: bradsmith2010 on March 05, 2020, 09:21:36 am
A 440 grain arrow would be 10 grains per pound
Title: Re: Sinew backed lilac bow
Post by: maitus on March 05, 2020, 09:24:55 am
Ok, so its good result?
Title: Re: Sinew backed lilac bow
Post by: bradsmith2010 on March 05, 2020, 09:26:53 am
Great result
Title: Re: Sinew backed lilac bow
Post by: maitus on March 05, 2020, 09:31:30 am
Waw :)!. I didn't know anything about gpp and its just about my tenth bow. I'm happy :D!
Title: Re: Sinew backed lilac bow
Post by: simk on March 05, 2020, 09:32:27 am
Wow! Congrats! Did you color the Ilac belly? looks like horn.... looking forward to fd  (-S
Title: Re: Sinew backed lilac bow
Post by: maitus on March 05, 2020, 09:36:02 am
Thank You, simk! Yes the belly is stained with some black stain that came off. I left that like it was and looks good to me :).
Title: Re: Sinew backed lilac bow
Post by: DC on March 05, 2020, 11:14:58 am
That's amazing. Find a 440 grain arrow and see what you get. If you're confident that it will draw farther try 28" draw. I'm impressed, very hard to do.
Title: Re: Sinew backed lilac bow
Post by: maitus on March 05, 2020, 11:41:00 am
Find a 440 grain arrow and see what you get.

Thank You, DC :)! I don't have any lighter weight arrow. Actually I was waiting for Your comment because I know we both are speed freaks and like extreme :D :D .... I also know that You don't like bridges :D.
Title: Re: Sinew backed lilac bow
Post by: bjrogg on March 05, 2020, 11:57:15 am
Really nice looking bow and that’s pretty awesome numbers. I’m looking forward to seeing the full draw pictures to . I’m guessing they look great by the braced and unbraced pictures, not to mention the crono number
Bjrogg
Title: Re: Sinew backed lilac bow
Post by: maitus on March 05, 2020, 12:02:40 pm
Really nice looking bow and that’s pretty awesome numbers. I’m looking forward to seeing the full draw pictures to . I’m guessing they look great by the braced and unbraced pictures, not to mention the crono number
Bjrogg
Thank You! I would like to see the full draw picture myself :D....
Title: Re: Sinew backed lilac bow
Post by: DC on March 05, 2020, 12:31:07 pm
Find a 440 grain arrow and see what you get.

Thank You, DC :)! I don't have any lighter weight arrow. Actually I was waiting for Your comment because I know we both are speed freaks and like extreme :D :D .... I also know that You don't like bridges :D.

The "sinew backed" just sunk in. I've only made one sinew bow(not the horn bow)and it was quite fast so I'm not sure now if 200 fps is excellent or just really, really good. maybe someone else will comment on sinew bow speed. It is a beautiful bow by the way. I've always wanted to try lilac but lilac doesn't grow very big and usually has a proud owner. :D
Title: Re: Sinew backed lilac bow
Post by: maitus on March 05, 2020, 12:43:10 pm
Yes, lilac doesn't grow big. That's the reason my bow is so narrow. just 1 inch. But i have noticed You are a big billets lover :D... That's a chance :). Most of my bows are sinew backed because.... guess why?  :D...Ok, because they are safe and by my mind simple to make and tiller :D.
Title: Re: Sinew backed lilac bow
Post by: PaSteve on March 05, 2020, 01:28:10 pm
Really nice bow. Impressive efficiency also. Great job.
Title: Re: Sinew backed lilac bow
Post by: maitus on March 05, 2020, 02:10:07 pm
Thank You :)! I always give my best.
Title: Re: Sinew backed lilac bow
Post by: bradsmith2010 on March 05, 2020, 04:47:50 pm
Take the tip off arrow,,,then wrap tip with tape till it weighs 440 grains,,, )W(
Title: Re: Sinew backed lilac bow
Post by: Hawkdancer on March 05, 2020, 05:10:37 pm
Nice job!  That is a "Done Good"!  I would think 200+ fps is excellent for almost any self bow!  Got to learn how use use my chronograph!
Hawkdancer
Title: Re: Sinew backed lilac bow
Post by: WhistlingBadger on March 06, 2020, 12:52:51 pm
That's a real beauty!  I love the shape, the colors, and the idea of lilac wood.  Thanks for sharing!
Title: Re: Sinew backed lilac bow
Post by: Whiskeyjet on March 06, 2020, 01:37:29 pm
Wow that is very fast!  (A) (A)
Title: Re: Sinew backed lilac bow
Post by: aaron on March 06, 2020, 01:52:40 pm
incredibly fast bow and pretty too! What's the white skin near the tips?
Title: Re: Sinew backed lilac bow
Post by: M2A on March 06, 2020, 05:20:02 pm
Looks like a lot of hard work went into that build. Lots of nice detail work! I don't much like to comment until I see a F/D pic but I totally get not having a qualified photographer around:) Looks great.
Mike   
Title: Re: Sinew backed lilac bow
Post by: maitus on March 07, 2020, 06:02:01 am
Thank You all for good words :)!
aaron, I'm not sure what You asking :). The back is covered with goat skin.

Here is the FD picture. It's not me, its my son and his draw is 29''. He was in a hurry and unfortunately I couldn't make crony:
Title: Re: Sinew backed lilac bow
Post by: maitus on March 07, 2020, 06:13:32 am
If You look at second picture You can see natural bend forward by the handle, on the left side. That's why the upper limb seems to bend more.
Title: Re: Sinew backed lilac bow
Post by: Rākau on March 07, 2020, 04:37:11 pm
that is amazing!
Title: Re: Sinew backed lilac bow
Post by: PatM on March 07, 2020, 06:57:40 pm
This bow deserves a lot more credit than it's getting,
Title: Re: Sinew backed lilac bow
Post by: DC on March 07, 2020, 07:30:48 pm
I agree. That 200 fps barrier is a big deal. It sure has stumped me. And on top of everything it's gorgeous. ;D ;D
Title: Re: Sinew backed lilac bow
Post by: bradsmith2010 on March 07, 2020, 07:35:01 pm
Yes agreed :)
Title: Re: Sinew backed lilac bow
Post by: DC on March 07, 2020, 07:36:19 pm
Let's just vote on BOY now.
Title: Re: Sinew backed lilac bow
Post by: WhistlingBadger on March 07, 2020, 08:10:06 pm
Wow.   (A)
Title: Re: Sinew backed lilac bow
Post by: PatM on March 07, 2020, 10:44:08 pm
I agree. That 200 fps barrier is a big deal. It sure has stumped me. And on top of everything it's gorgeous. ;D ;D

In fairness it's not a selfbow but it gives a lot of insight into what wood can do in place of horn in  a  similar design.
Title: Re: Sinew backed lilac bow
Post by: maitus on March 11, 2020, 01:28:22 am
Wow.... some guys still like my bow :). Thank You!
I was hoping for a bit more attention to this bow and I was slightly disappointed because of very little interest. Actually its a good lesson for my beginners bowyer EGO to understand that what I do, I do first for myself and its just my hobby i like and makes me happy :D. Actually the positive comments the bow got compensate everything :D. Maybe I should post more bows I have made, not just the best ones :D....
Title: Re: Sinew backed lilac bow
Post by: maitus on March 11, 2020, 01:37:15 am

In fairness it's not a selfbow but it gives a lot of insight into what wood can do in place of horn in  a  similar design.
I agree and its exactly how i see it :) ...
Title: Re: Sinew backed lilac bow
Post by: HH~ on March 11, 2020, 10:26:23 pm
Love that bow. A Brush Rocket for sure.

HH~
Title: Re: Sinew backed lilac bow
Post by: Marc St Louis on March 12, 2020, 08:20:52 am
Impressive.  With that speed your bow should set a world record in flight shooting
Title: Re: Sinew backed lilac bow
Post by: WhistlingBadger on March 12, 2020, 08:35:48 am
maitus, would you please tell me about the little bridges near the tips?  I mean the little bits that hold the string away from the limb.  What is their purpose?
Title: Re: Sinew backed lilac bow
Post by: maitus on March 12, 2020, 02:06:43 pm
Hi, WhistlingBadger!
The bridges don't holding string away from limbs, in my case, but holding string on the limb :). It wouldn't stand on concave curve of the belly without them. I could also file string grooves into belly, but there is a very thin layer of lilac and I didn't want to file through it. Also, the bridges help to rise the string height without bending the bow and shorten the movement of the limb tips. As we know the straight bow has a higher string tension. And I believe that when the string reaches to the bridges after release, the string will move much faster between them and will give some extra fps to the arrow.
Title: Re: Sinew backed lilac bow
Post by: WhistlingBadger on March 12, 2020, 02:18:35 pm
So, the bridges keep the string from slipping sideways off the recurves, which they otherwise would because the belly is rounded?
Title: Re: Sinew backed lilac bow
Post by: PatM on March 12, 2020, 02:37:25 pm
Yes, bridges form a localized belly groove rather than having it extended along the whole recurve.
Title: Re: Sinew backed lilac bow
Post by: Aaron H on March 12, 2020, 02:46:27 pm
Very cool, awesome performance
Title: Re: Sinew backed lilac bow
Post by: maitus on March 12, 2020, 03:28:15 pm
Love that bow. A Brush Rocket for sure.

HH~
Thank You :)!
Impressive.  With that speed your bow should set a world record in flight shooting
I do not know anything about flight shooting :D...
Very cool, awesome performance

Thanks a lot :)!
Title: Re: Sinew backed lilac bow
Post by: WhistlingBadger on March 12, 2020, 03:45:33 pm
Yes, bridges form a localized belly groove rather than having it extended along the whole recurve.

OK, thanks, both of you.  That makes sense.  Might I add, for what it's worth, they look pretty cool, too.   8)

T
Title: Re: Sinew backed lilac bow
Post by: bjrogg on March 12, 2020, 04:47:17 pm
I see a pretty full draw picture there now.  Very Nice, just as I would have thought. Nice 👍
Bjrogg
Title: Re: Sinew backed lilac bow
Post by: maitus on March 12, 2020, 04:51:55 pm
Thank You!
Title: Re: Sinew backed lilac bow
Post by: silent sniper on March 12, 2020, 06:04:12 pm
Awesome work! The bow has great looks and the performance to match!
Title: Re: Sinew backed lilac bow
Post by: Will B on March 12, 2020, 06:08:36 pm
Great job on a beauty of a bow. Well done!