Spring feed spring specs?

I'm trying to build my own spring feed tubes (sort of a poor mans long bow). I was wondering if anyone here knew the specs for the spring.
Any item or combination of items below would be quite helpful:
OUTER DIAMENTER
WIRE DIAMETER
OVERALL LENGTH
RATE
MATERIAL
LOAD

have you tried asking luke? he offered some springs and plungers for spring feeds or does offer springs and plungers here is a link:
http://www.lukescustoms.com/page0027.htm

hope that helps a lil?

Quote:

---

Originally Posted by pgop2.0

OUTER DIAMENTER = 0.576"
WIRE DIAMETER = 0.017"
OVERALL LENGTH ~ 9.25"
COMPRESSED LENGTH ~ 0.6"

---

I should be able to get you these three. I have an empire spring feed sitting right next to my calipers. I just need to remember to put the two together. I'll try to remember to do that when I get home tonight.

I forgot to mention I edited my previous post with the dimensions I could get. I hope that at least helps a little bit.