Irregular Pitch Spring Installation

oOMuDOo · September 14th, 2007, 10:04

Quote:

Originally Posted by HellRanger

That's not the best example because, a PDI is like a box of chocolate... you never know you are going to get.

LOL this quote is amazing. I chuckled out loud at work... nicely said.

Renegade) · September 14th, 2007, 12:01

And that is why the spring is still in the box! I keep it around for that diagram haha

CDN_Stalker · September 14th, 2007, 12:04

Quote:

Originally Posted by oOMuDOo

LOL this quote is amazing. I chuckled out loud at work... nicely said.

Agreed, words to live by! I think nthe biggest problem is the PDI 150% springs largely come in lengths ranging from 6 3/8" to 7" long. How's that for consistancy?

TokyoSeven · September 14th, 2007, 12:28

Quote:

Originally Posted by HellRanger

That's not the best example because, a PDI is like a box of chocolate... you never know you are going to get.

I was thinking more that a PDI spring was more like the ugly girl in a bar at last call. You know you shouldnt, but the more you look at her, the better she looks and in the end, your just gona stick it in anyways.

dodger_me · September 14th, 2007, 12:32

....

Styrak · September 14th, 2007, 12:57

Quote:

Originally Posted by TokyoSeven

I was thinking more that a PDI spring was more like the ugly girl in a bar at last call. You know you shouldnt, but the more you look at her, the better she looks and in the end, your just gona stick it in anyways.

Another awesome quote from the awesome quote factory that is TokyoSeven

surebet · September 14th, 2007, 15:11

Quote:

Originally Posted by TokyoSeven

I was thinking more that a PDI spring was more like the ugly girl in a bar at last call. You know you shouldnt, but the more you look at her, the better she looks and in the end, your just gona stick it in anyways.

Don't forget to double bag it, and use rubber gloves.

And fire.

TokyoSeven · September 14th, 2007, 15:13

Quote:

Originally Posted by surebet

Don't forget to double bag it, and use rubber gloves.

And fire.

Is that in regards to the spring or picking up a gal at last call? Usually for the latter I just recommend a large paper bag and a tench coat with a hole in the back.

ThunderCactus · September 14th, 2007, 17:58

Quote:

Originally Posted by HellRanger

That's not the best example because, a PDI is like a box of chocolate... you never know you are going to get.

yeah my PDI 120% was shooting higher than a PDI 130 should have lol

Styrak · September 15th, 2007, 07:11

Just installed a Systema bearing spring guide and M120 spring into my AUG using the "coils go towards the spring guide" advice.

TokyoSeven · September 15th, 2007, 16:36

I am never helping you do that again. I think I broke a nail.
Lets work on our crap canon project later.

Styrak · September 15th, 2007, 17:58

Quote:

Originally Posted by TokyoSeven

I am never helping you do that again. I think I broke a nail.

Yeah it definitely takes more than 2 hands. It's a bit difficult.

jaketibor · November 8th, 2010, 16:19

Is there a difference between a normal spring and a "Irregular-Pitch Taper Spring"? or is it the same thing?

http://shop.ehobbyasia.com/systema-i...ude-psg-1.html

And is there a such thing as quality with a spring or could I buy this?
http://shop.ehobbyasia.com/shs-m110-...de-spring.html

Id rather go with a 110 spring but I'll have to buy some "no name" one from this website.... bad idea? Im buying a battery so I thought I could save shipping and buy a spring as well!

m102404 · November 8th, 2010, 16:41

There's linear (regular) and non-linear (irregular) springs. Regular springs have all the coils spaced out evenly. Non-linear have sets of coils bunched closer and further apart. Some have a tight pack of coils at one end...some at both ends...some in the middle...and combos of all that.

The purpose is to impart a different power curve as the spring is untensioned. Different power peaks, different timing of peaks, etc...

As a rule of thumb...when installing a non-linear spring, install the tightest pack of coils towards the rear (i.e. spring guide end) for the most power.

All springs are not created equally. IMHO it's worth going with a recognized brand.

Cokeman · March 25th, 2012, 15:07

Sorry about bringing back an old thread (but it shows I did search

).

I have a King Arms M4 which I needed to downgrade to below 400 fps. I was told that I could install a M120 spring (non-linear pitch) backwards, with the tigher packed coils to the front. This would effectively give me the same fps as a M110 spring (which the store didn't have in stock). So, I tried it. With the M120 spring (ICS brand) installed correctly, the gun shot at 420-430 fps. Reversed the spring and it still shot at the same 420-430 fps. So, any ideas why my experience differs from the information that I was given and also the info that I found on this thread?

Quote:

Originally Posted by m102404

There's linear (regular) and non-linear (irregular) springs. Regular springs have all the coils spaced out evenly. Non-linear have sets of coils bunched closer and further apart. Some have a tight pack of coils at one end...some at both ends...some in the middle...and combos of all that.

The purpose is to impart a different power curve as the spring is untensioned. Different power peaks, different timing of peaks, etc...

As a rule of thumb...when installing a non-linear spring, install the tightest pack of coils towards the rear (i.e. spring guide end) for the most power.

All springs are not created equally. IMHO it's worth going with a recognized brand.

Home	Forums	Register	Gallery	FAQ	Calendar
Retailers	Community	News/Info	International Retailers	IRC	Today's Posts

British Columbia	Alberta
BCAC	EAR
Op-For	JOC
Northern Arms Airsoft	Skunkworx Airsoft
Airsoft Kelowna	RAAT
Prince George Airsoft	Manitoba
Saskatchewan	MAA
SK Airsoft	Ontario
PDW	Airsoft Ottawa
South Sask Mercs	Snow Dragons
Quebec	1st Ranger Platoon
PQAC	Wolfpack Tactical
1st Pathfinders Regiment	TTAC3
Quebec Airsoft
MTX Airsoft	Atlantic
FAQc	Atlantic Airsoft

September 14th, 2007, 12:01	#17
Renegade) A Total Bastard Trader rating Join Date: Apr 2006 Location: Tottenham, Ontario	And that is why the spring is still in the box! I keep it around for that diagram haha __________________ W1-5

September 15th, 2007, 07:11	#25
Styrak Trader rating Join Date: Jan 2007 Location: Saskatoon, SK	Just installed a Systema bearing spring guide and M120 spring into my AUG using the "coils go towards the spring guide" advice. __________________ Airsoft Sales and Repair/Upgrade Services

September 15th, 2007, 16:36	#26
TokyoSeven Red Wine & Adderall Trader rating Join Date: Oct 2005 Location: Saskatoon, SK	I am never helping you do that again. I think I broke a nail. Lets work on our crap canon project later. __________________ "Its only a little bit on fire"

November 8th, 2010, 16:19	#28
jaketibor Trader rating Join Date: Dec 2008 Location: Newmarket, Ontairo	Is there a difference between a normal spring and a "Irregular-Pitch Taper Spring"? or is it the same thing? http://shop.ehobbyasia.com/systema-i...ude-psg-1.html And is there a such thing as quality with a spring or could I buy this? http://shop.ehobbyasia.com/shs-m110-...de-spring.html Id rather go with a 110 spring but I'll have to buy some "no name" one from this website.... bad idea? Im buying a battery so I thought I could save shipping and buy a spring as well! __________________ Guns: Classic Army M15A4 RIS Carbine - Crane Stock - X Series KWA M9 PTP Last edited by jaketibor; November 8th, 2010 at 16:23..

November 8th, 2010, 16:41	#29
m102404 Tys Trader rating Join Date: Apr 2006 Location: Toronto	There's linear (regular) and non-linear (irregular) springs. Regular springs have all the coils spaced out evenly. Non-linear have sets of coils bunched closer and further apart. Some have a tight pack of coils at one end...some at both ends...some in the middle...and combos of all that. The purpose is to impart a different power curve as the spring is untensioned. Different power peaks, different timing of peaks, etc... As a rule of thumb...when installing a non-linear spring, install the tightest pack of coils towards the rear (i.e. spring guide end) for the most power. All springs are not created equally. IMHO it's worth going with a recognized brand.

Irregular Pitch Spring Installation

Upgrades & Modifications