Primitive Archer

Main Discussion Area => Bows => Topic started by: NewBowyer on May 16, 2020, 07:21:14 am

Title: bow tillering app
Post by: NewBowyer on May 16, 2020, 07:21:14 am
I think I remember reading somewhere, possibly here (although my searches have come up empty) of a downloadable app to help with tillering. You snap a pic of the bent bow and the app superimposes a smooth arc or circle onto it so you can better see, on the screen, the spots where the limbs are bending too much or too little. Of course I didn't write it down and now can't remember where I saw it. Sound familiar to anyone? Thanks.
Title: Re: bow tillering app
Post by: Ricardovanleeuwen on May 16, 2020, 07:41:39 am
 The app is called canva graphic design i found It during a 7 tillering hacks YouTube video
Title: Re: bow tillering app
Post by: Pat B on May 16, 2020, 08:39:02 am
You can do that here and have experienced bowyers share their opinions and advise.
Title: Re: bow tillering app
Post by: DC on May 16, 2020, 09:37:55 am
You can use Windows "Paint"
Title: Re: bow tillering app
Post by: NewBowyer on May 16, 2020, 09:40:18 am
43# @ 21". Does the right limb look stiff?
Title: Re: bow tillering app
Post by: RyanY on May 16, 2020, 09:52:57 am
You need to shorten that string quite a bit more to get an accurate view of the tiller. Right limb does look stiff but I don't trust the long string when its so much longer than the bow. Try and get it as close to the length between the nocks as possible without bracing it.
Title: Re: bow tillering app
Post by: Ricardovanleeuwen on May 16, 2020, 09:53:29 am
You can also hold a round object between your eyes and your bow
Title: Re: bow tillering app
Post by: NewBowyer on May 16, 2020, 09:56:36 am
Brain cramp- not nearly a real 21" with that string! ::) Thanks for the reminder!
Title: Re: bow tillering app
Post by: DC on May 16, 2020, 09:57:00 am
Also if you can, move your tillering tree to the left a bit so that real tree in the background is centred on the bow. It's messing with my eyes :D
Title: Re: bow tillering app
Post by: NewBowyer on May 16, 2020, 11:16:26 am
Sorry DC but the tillering tree has to be on a fence post because I don't trust the hollow pickets. I'll see if I can shoot the next pic from a better angle.  ;)
Title: Re: bow tillering app
Post by: Ricardovanleeuwen on May 16, 2020, 12:14:36 pm
Since i think its a easy way to check the tiller i was searching for a better app and found the app logo maker
Title: Re: bow tillering app
Post by: NewBowyer on May 16, 2020, 01:55:12 pm
Here are 2 taken with the string Just slightly shorter than the bow. I reversed it to see both sides. One limb seems clearly stiffer right? Any specific hinges or flat spots noted?
Title: Re: bow tillering app
Post by: DC on May 16, 2020, 02:08:54 pm
On the second pic, right above the scale, there is a hinge starting. Put a bunch of X's there and don't scrape there until the rest of the bow catches up.
Title: Re: bow tillering app
Post by: bradsmith2010 on May 16, 2020, 02:12:01 pm
the one bending too much needs to bend more in the outers,,
the stiff one needs to overall bend more,, please take with grain of salt,,
if you use an app..its like projecting an image onto paper and tracing it,,,, your eye wont learn,,
just take the time to develope and eye for tiller,, yes its hard ,,
sometimes a stave has reflex and deflex in the limb,, so a straight arc,, is not stressing the wood evenly
just keep posting and asking you will get it,,
Title: Re: bow tillering app
Post by: NewBowyer on May 16, 2020, 02:55:18 pm
Yes I'd marked that beginning hinge already. Draw weight is way heavy now anyway so I'll bring the rest down. Appreciate all the input.
Title: Re: bow tillering app
Post by: NewBowyer on May 16, 2020, 05:29:52 pm
Progress- still working that stiffer limb but getting better. The help here is invaluable.
Title: Re: bow tillering app
Post by: bownarra on May 17, 2020, 12:26:06 am
Don't pull it that far!
Sort out the limbs strength relative to each other.
You still have the same problems as mentioned above.
Title: Re: bow tillering app
Post by: Eric Krewson on May 17, 2020, 08:11:54 am
You need a tillering gizmo! Make one before it is too late, don't take any more wood off your left limb.

(https://i.imgur.com/1aoO247.jpg)

http://www.primitivearcher.com/smf/index.php/topic,61422.0.html
Title: Re: bow tillering app
Post by: Del the cat on May 17, 2020, 12:17:55 pm
All the drawing packages and stuff only really help if you know what you are looking at... I've seen plenty of random ellipses draw on pictures to "show" the tiller is good. You need to get your eye accustomed to seeing the curve, an app etc is no substitute... IMO the best aid is probably video of it being flexed. The curve drawing rarely shows something I can't see already but is handy for showing it to someone else who probably couldn't draw the curves right themselves!
Del
Title: Re: bow tillering app
Post by: NewBowyer on May 17, 2020, 04:38:42 pm
That simple gizmo makes a huge difference. I built one this morning and it's totally different tillering with or without it. Also drilled some holes in my tillering tree for a peg to hold at different draw lengths. HUGE help!