Question for you tuning whizzes

mooseman76 · November 22, 2007, 11:58:00 AM

I have a question about tuning bows that are cut well past center. I have a Black recurve that is 51#@28" I draw 29" + or - My past experiences tell me that I should be using about a 30" 2018 with 125 grain head at my draw length. However, out of this bow the arrow is severely underspined. To get good flight I needed to use a 30" 2216 with 125 grain head. I assume this is because the bow is cut past center. I'm sure I can get the 2018 to fly right if I build up the side plate. Now for the question, do I lose anything by staying with the 2216 and not building the side plate out? I like the flight I'm getting and I'm not real crazy about building the plate out everytime I put a new rest on my bow. I will do it, however, if the bow will be more efficient, etc with the other arrows. Thanks...Mike

FJTOYMAN · November 22, 2007, 01:09:00 PM

You're right. Moving the strike plate out will correct your arrow flight for the 2018. If you don't want to build out the plate you could also lighten up your point and or increase your brace height.
The 2018 is heavier by 9 grains @ 28 than the 2216 and might be a little tougher with the thicker side wall but I dont' know if you could tell the difference.
HTH

Zmonster · November 22, 2007, 01:27:00 PM

Im no tunning wizz, but I just finished tuning two bows this morning, and after MANY fits, it came down to brace hight. I did everything under the sun, and I had the bow set at the bowyers recommended brace. I couldnt get my bare shafts to come anywhere close no matter how high or low I moved the nock, no matter how many times I changed the tip weight.

I FINALY started playing with the brace, and things came together. I went between 1/4 to 1/2" above the recommended height and I started grouping nicely.

Its worth a try....

wtpops · November 22, 2007, 01:57:00 PM

A 2117 will work also, be lighter than a 2216 and you wont have to bild out the strike plate. The 2018 will be hard to get good flight with, Just my expereance

mooseman76 · November 22, 2007, 10:06:00 PM

Main reason for me wanting to stay with the 2216 is that I have 2 dozen of them. I figured the 2117 would work, but don't have any.

FJ I've gone down to 85 grains with the point and the arrows are still so weak that I'm not sure the brace height will do much if anything.
Your assesment of the arrows being heavier is the reason I wanted to try them out. Not much difference in weight though.

Zmonster, I went through the cycle (within the suggested range as I don't want to void the warranty) and still the bare shafts come out almost sideways.

If there is no good reason not to shoot the 2216 then I'll stay with them. Thanks for all the help...Mike

wtpops · November 22, 2007, 11:48:00 PM

If a 2216 is what you have on hand, shoot it up. They should fly good at your draw weight and lenght. With that arrow set up you should be around 565 to 585 grains. They will hit hard, i think you will like them.

FJTOYMAN · November 23, 2007, 01:15:00 PM

Wow, I can usually see a difference with in 25 grains.
They must be really week. According to easton chart (FWIW) the difference between a 2018 and 2216 is 11 lbs at 30" with a 125 point. You would have to go to a 75 grain point and 28" to get within there recommendations for your bow weight.

mooseman76 · November 23, 2007, 01:38:00 PM

FJ: I can see a major difference with the 85 grain point, but with the 125 grain the bareshaft is almost sideways, so while its better its still not good enough. I'm not sure what you are saying with you last sentence? You mean I'd need a 28" 2018 with 75 grain point to get good arrow flight? That would probably work, but I need at least a 30" arrow.