Help! best bell curve by 30 ft/lbs with 18,5" BSA barre

Woodie,
Good to see you back on your feet and having some fun ❗ 😆
m

Now this is a blast from the past… Ewoodie

Glad to see you back! I didnt realize you were ill. Hope all is better now.

I still remember the old vids.. the head exploding on the pigeon and the ‘pigeon at 38 yards, on roof’… SNAP! tumble…. hahahah

Well to narrow things down maybe order a standard hammer spring, hammer and condors extra weight just in case its needed. I posted something on this a litttle while ago. There is a post from J3 magnum in the general area buried around 20pages or so and he had a 15g delrin hammer and everyting else was stock is my understanding. He got a awsome shot count and a nice bell curve as well. I guess i was responding in terms to a more or less stock setup. The way they are setup now is for full power on the first few shots. Want a little more power add a heavier hammer it holds the valve open longer. I know a curve is achieveable as the current hammer spring is maxed out at around 100g mine really seems to struggle to get the 100g hammer moving, 75g is about optimum and with a little lighter valve spring i get good numbers with the stock 50g hammer, slightly lighter valve spring and a modded Talon valve, so long as the tophat has been adjusted in so its not wasting air. Your right there is alot of variables. Hammer length and the preload on the spring with the Power Wheel setting also play a role. With what i mentioned above the PW just affected consistency from shot to shot after modding the valve,installing a lighter spring and going with a stock 50g hammer. I get about 100fps more over stock, and a shot spread of 42fps over 20shots. If i could have gotten the tophat in more then .058 i’d have been able to tighten the string up some more. One could say maybe a 40-45g hammer might have helped as well. This is the madness of it all, it sounds like you have a good handle on it, keep us posted..What valve design are you considering?

If your going completly custom not many of us can offer much assistance, it will have to be trial and error depending on your valve design. Brech bounce will depend on the hammers weight and the preload on the spring. I don’t buy into hammer/brech bounce to much. 1. your brech is locked against the tophat, and 2. the delrin is plastic which does a good job of absorbing the energy as i see it. Both the brech and the hammer cups are delrin. I have asked about different materials for brechs and how they transfer energy, but noone seems to know. I have a ali brech and wondered which of the two does a better job of transfering the hammers energy and dispersing it?? I know my TSS pretty well, if your going custom, thats a different ballpark altogether. Then we have a few guys who know what they are doing, 2 marks, Sean(Blodnob), CygsX, and another who posted a nice rig but doesn’t stop in to often. Have fun, enjoy your project.

A lighter hammer, balanced with the right valve spring will do you just fine. Its finding that balance which will be of some frustration, especially since your going to do a custom valve job. I’m going to experiment with this as well with a Talon valve, lighter valve spring and lighter hammer. Looking for a 50fps spread or so say starting at 800fps up to 850 then back down to 800 somethig along those lines.