Ok I am going to build a ILF longbow riser (I will be buying the ******** longbow limbs) I already have the wood.. So I have a few questions.
1, How long of a riser? I would like to end up with about a 66" bow.
2, I draw 27 1/2, I want to end up with 50-53# what weight limbs should I get, as of right not they only offer the limbs in long?
3, What limb angle do I need? 12? 14? 18?
4, were do I cut the shelf, in the dead center of the riser? Or do I put the throat of the grip in the middle?
Also I have Titebond 3 wood glue I was planning on using to glue the different woods together, will this glue work well?
The Titebond 3 should do well. Just be sure to have good tight fit between layers.
since you have a short draw then you could probably get away with going around a 15 to 16 degree limb pads. It will give you limbs a little more preload since most limbs are measured at 28". Standard limb pad angles are around 17-18 degrees and if you went with that at least you could swtich back and forth between ilf longbow and recurve limbs with no worries. In my opinion, I would go with 17 and you will most likely just be tuned with the bolts almost all of the way in.
As for the length, medium limbs on a 21" riser gives 62" amo. Im not a big fan of longer that 21" unless you're shooting field and not really hunting with it.
Some companies offer longbow limbs in xtra long, i believe that is your best bet to getting to your desired 66" length without have a riser that is absurdly long.
As for how for to cut the arrow shelf, look around at some commercial risers that have a design similar to the one you have in mind and see how far they cut theres. I still haven't decided whether to cut mine to center or 1/16 past.