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Old 01-06-2004, 11:50 AM #1
FallNAngel
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Think this spring setup will work?

With my full bodied marker, I had been using a green nelson valve spring and a yellow nelson main spring with the IVG flush with the body. I had been planning on switching to a red madmann valve spring, but never got the chance to test it out.

Having said that, I'm planning on getting a turtled midget cocker from Martin and wondered what you guys think about a red madmann valve spring and a yellow nelson spring. I know I'll have to cut down the main spring a bit, as I was planning on having it just long enough to fit between the hammer and ivg.

Any suggestions / tips?
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Old 01-06-2004, 02:38 PM #2
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Any answer would be theoretical (and/or uninformed) you will just have to wait and see after the gun is done. Plus it will greatly depend on what input presure your shooting for.
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Old 01-06-2004, 03:05 PM #3
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I don't "shoot for" any particular input pressure, I'm looking for efficiency.
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Old 01-06-2004, 04:10 PM #4
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Just caught somthing. When you say you are getting a midget gun, do you mean the back chopped off? because that will take a special main spring.
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Old 01-06-2004, 04:31 PM #5
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Would probably help if you read my post completely too:

Quote:
I know I'll have to cut down the main spring a bit
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Old 01-06-2004, 04:45 PM #6
crazyj23
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just get some Rex length springs
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Old 01-06-2004, 04:50 PM #7
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Sigh: And we know how much of the spring you will cut off and how that will effect the stored energy when the spring is loaded?

When you start chopping on parts the standard characteristics go bye-bye. So again any answer given will be thoretical and/or uninformed. You will have to just do it and see what works.
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Old 01-06-2004, 05:04 PM #8
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couple of things.......

martin makes "miniblocks" not turtles


as for the springing....

I haven't tried anything yet seeing I haven't gotten my body back yet.....


but here is my thinking and plan of attack of springing my "midget"(Just a name I made up BTW)

Your hammer spring will need to fit between the IVG and the hammer, while the hammer is in the back positition (cocked)

your main spring will need to be about half the length of a standard.....so my thinking is I will need a stiffer shorter spring.......to get a valve to open enough to not have to run it a some crazy high pressure .which would make me need an even stiffer hammer spring to open the valve


So I plan on running a stiff (red-maddman) cut down..and using a rocket valve with the light spring that used to come with them.

Seeing the rocket valve is designed to have the valve spring seal it and not pressure and to fully open all the time........

This means the velocity is controled at the inline reg....rather than the IVG.....it will be easier to spring and run it a reasonable pressure.....



You may ask....."if you control velocity at the reg won't efficency go down.......".....well..not really if you set up the rocket valve correctly.....and adjust the gap at the Spring Retainer Plate (SRP) of the valve accordingly..but once set up..fine adjustments can still be made at the reg.....

I use this valve in antoher marker and once set up works quite well and I get good efficency..


that is my plan of attack.......I'll let you know how I make out once I actually get it.....
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Old 01-06-2004, 07:41 PM #9
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Quote:
Originally posted by Jynxfactor
Sigh: And we know how much of the spring you will cut off and how that will effect the stored energy when the spring is loaded?
Actually, just cutting a spring won't lessen the tension it puts out.

Quote:
Originally posted by Jynxfactor
When you start chopping on parts the standard characteristics go bye-bye. So again any answer given will be thoretical and/or uninformed. You will have to just do it and see what works.
Not really. In either case, perhaps someone has tried using a Yellow Nelson main spring with a Red Madman valve spring in a full body cocker with a stock valve and has something to pitch in.

Quote:
Originally posted by PTflyer
martin makes "miniblocks" not turtles
I've said it before and I'm saying it again now. There's very little difference between them, they all generally work the same way, just the material used and how the hammer is pulled back. I personally use the term interchangably, I'm sure many others do as well.

Quote:
Originally posted by PTflyer
but here is my thinking and plan of attact of springing my "midget"(Just a name I made up BTW)
Yea, but I like how it sounds, which is why I'm referring to it as that


So far, I think I'm going to just try to get the main spring short enough that it's just a shade longer then the distance between the hammer and the IVG. I think I'll probably start with the red madman spring and go from there.
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