Tiller help Please.

[Linc]

I wouldn't worry much about the string not running center.You can pike that by making the string grooves deeper on one side than the other.

Looks to me like you need to get the left limb bending some more.Maybe 20 scapes with a cabinet scraper and excersize the limbs a little and recheck.

[rascal]

Ok did 20 scrapes and excercised the limbs down to the same draw length as above 30 times.  Wasnt a big change in the draw weight in fact the difference could have been how far I pulled it from the last time to this time.  The left limb still looks stiff compared to the right I think.  I went pretty easy on the scraping, probably a bit too easy. Anyhow here is the next picture.

 

As always thank you in advance for any helpful advice you might hvae to offer.

[rascal]

Oops double posted that one.

[Linc]

I would say to take about .030 off the outer 2/3rds of the left limb and .030 off the entire length of the right limb. That should get the limbs moving a little more.

[rascal]

Here are a couple more pictures after taking the .030 off the outer 2/3 of the left limb and the same off the entire right limb.  I didnt bother judging anything here and used my Starrett calipers for all measurements.  It hasnt affected much on the draw weight right now and this is still pulled down to the same length as the above pictures.

Here it is after excercising the limbs 20 times.

 

Now here it is drawn.

 

All of your helpful advice is appreciated.  Let me know what you think.

[Linc]

Comparing pics,it looks like the limbs are working more.This is the point where you will need to start tapering the limbs thickness. A gradual taper .013-.015 every 6" leaving the last 6 or so inches of the tip stiff.

[rascal]

Back at it again today, did some tapering as suggested about .015 per 6 inches leaving the last 6 inches of the tips stiff.  Stayed as close as possible to the dimensions as I could following the limb contours.  Heres a couple of pictures to show the progress.

After excercising the limbs 20 times.

 

Pulled down to 24 inches.

 

Lemme know what you think now.

[Linc]

Looking better. I would say take 20 or so scrapes on the outer 2/3rds of both limbs and continue to excercise them. Then you could probably go to a short string with a low brace height and check the profile to look for equal tillering and flat spots.

[rascal]

Ok took 20 scrapes off both limbs outer 2/3rd and braced it up to about 5 inches.  I ran a 6 inch straight edge along the belly of the bow and think Ive found a couple of flat spots which I marked with blue tape and a hinge which I marked with a strip of red tape.  The left limb isnt quite bending as much as the right but I think first I need to address the flat spots and hinge.

Here we are braced to 5 inches.

 

Any suggestions are welcome.

[John Scifres]

Take an extra 20 scrapes at a time off that left side until you get the limbs evened up.  The right is bending twice as much as the left.  Mostly due to the hinge.  Work the outer half a little more than the inner.  Give the outer half of the right limb a little (little) love with the scraper also.  Exercise 30-50 pulls to 10" or so after each session.  Don't brace it again until they are even.