More flat bow tiller check please.

[John Malone]

I figured it out guys, to embarrassed to say what it was but it all makes perfect sense now.
 Well ill do it for the new guys in case their reading this. When you make a flat bow or any bow that tapers at some point make sure ya round them shoulders out nice and gradual like, but most importantly make sure they match! The twist showed up after the pic was taken and i had just adjusted the taper to the tip and didn't check. It wasn't really noticeable but after putting the slide rule on it one shoulder was slightly higher. So i fixed that and now the string runs true??????? so that had to have been it.
Just like i used to tell the new guys, check double check then check it again if ya want a pay check. Plum embarrassing it is.

[Pat B]

John, does the bow lay flat if unbraced?

[Roy from Pa]

Rookies. LOL glad it worked out for you. Don't feel bad, it happens.

[John Malone]

Pat, no it doesn't lay flat, Why?. But I have a 6 foot piece of 2 inch steel tubing that I padded with duct tape. I put the bow on it and clamp it to my work bench at the handle area so i have a nice flat solid base to work from. I can clamp it flat if needed. That's how i found the off shoulder I traced it out on poster board then flipped the pattern over and it didn't match. When i say i used a SLIDE RULE that means I used my red neck ingenuity on some thing. Next bow i will make limb patterns on poster board and draw out the shoulders instead of eyeballing them. Lesson learned.

[Pat B]

John, with a board bow it should lay flat on it's back except for any set it may have taken. You should also be able to see where the twist is. With a sawn board, ring variation could cause twist even if the limb thickness is even. In that case you'll just have to tiller the twist out. If you can draw the bow to full draw and that eliminates the twist, it's good to go. With a wood bow full draw is where it matters.

[John Malone]

Thanks Pat, It will lay flat as you described i thought you meant t2t flat. Didn't see any twist like that unstrung then i thought of checking my shoulders. Cool thing is it had one inch of set from the start now it has two which means i only put an inch of set in it which is good from what I've read about red oak. I was going to ask about tillering that out if I encounter one that needs it.
 As far as wood bows and full draw is all that matters I've read that concerning staves, so I'm assuming it applies to boards as well?

[YosemiteSam]

Happy to be "listening" in on this discussion.  Great insights.

[John Malone]

I follow your post to Sam, it is a great way to learn. Just so ya know my limbs are even lengths and tillered even as I shoot three under like you.

[John Malone]

The bow measurements match at 5 inch intervals when drawn to different lengths. Cant get a good pic so I took two with the bow flipped around in each. Have messed with it all day. Still got #52.5 @28 so its still possible to come real close to my goal of #50 I hope.
 
 
 
 

[John Malone]

How bout this one?
 

[Wolftrail]

Looks from here.  Make sure you exercise it fully.  Had to many break on me lucky my face was not mince meat.

[Pat B]

Just above mid limb on the top looks a little stiff for about 8" then a slight bend before the tip.
The upper fade could bend a bit more too.
You're getting close. Have you shot it yet. If not, do so. Put about 10 arrows through her then check full draw again.

[John Malone]

Gonna try tomorrow Pat, Its cold out there. Real cold.

[Roy from Pa]

The right limb area outside of the fade looks a tad stiff where the flat line is. Where the arrow is looks a little weaker. Then stiff out past that. I would work above and below that arrow, not touching the arrow area at all. Just a few scrape's then sand then exercise.

Do you have a gizmo? They do not lie.

   

[John Malone]

I see it this morning. Yes I have a gizmo, going to modify it today with a better pencil adjustment on there. Some how it went sailing across the shop last night. When things start magically flying around I know its time to stop.

[John Malone]

Hah!!!!I figured that out. I like it. But I know darn well Hank didn't do it this away. Thanks for the inspiration Roy. An NC hillbilly cant get showed up by one from PA. lol

 

[Roy from Pa]

You have been healed..  

[John Malone]

I hate window 10! they changed it all up. Kinda of reminds me of when beer company's switched to all twist off tops.

[John Malone]

Modified gizmo. Its a prototype, still the exact same thing just a better pencil adjustment. The other was tight but I swear I could feel it move most likely my imagination. If I like it I have an idea for installing a tiny ruler for adjusting in 1/64 increments. Not necessary I know but neither is a 300 blackout for coyote hunting but hey why not!
 

[John Malone]

I give up for now, down to 49.7 pounds @28.