Airsoft Canada
http://triggerairsoft.com/shop/

Go Back   Airsoft Canada > Discussion > Upgrades & Modifications
Home Forums Register Gallery FAQ Calendar
Retailers Community News/Info International Retailers IRC Today's Posts

Spring Comparison Chart - Updated April 1st, 2006

:

Upgrades & Modifications

Reply
 
Thread Tools
Old May 21st, 2006, 10:59   #91
HerrMann
 
HerrMann's Avatar
 
Join Date: Apr 2006
Location: Calgary
I just had a Systema m100 spring put in my gun, get it home and plug in my 9.6 1700 mah bat (fully chargered), turns over once and then nothing? I this a case of my bat. not having enough mah to crank the spring?
HerrMann is offline   Reply With Quote
Old May 21st, 2006, 11:01   #92
Amgoosen
 
Amgoosen's Avatar
 
Join Date: Jan 2006
Location: GTA
9.6v is more than enough to turn over a M100, perhaps something was put together improperly.
__________________
Quote:
Originally Posted by pugs144
Only mall ninja poseur attention-whores go around wearing full kit outside the field.
Amgoosen is offline   Reply With Quote
Old May 21st, 2006, 23:32   #93
The Saint
 
The Saint's Avatar
 
Join Date: Jan 2005
Location: Quebec
Hey ILLusion, I was just looking at your spring test gun's spec today, trying to potentially imitate your setup. I noticed that you had the KM TN tapered cylinder. I was under the impression that you said they wereno good for guns over 1J. Is there a mistake on the specs of the test gun, or did you discover something new about the cylinder's performance for guns over 1J?
__________________
"The Bird of Hermes is My Name, Eating My Wings to Make Me Tame."
The Saint is offline   Reply With Quote
Old May 26th, 2006, 15:49   #94
ILLusion
GBB Whisperer
 
ILLusion's Avatar
 
Join Date: Jun 2002
Location: Toronto
Quote:
Originally Posted by Amgoosen
9.6v is more than enough to turn over a M100, perhaps something was put together improperly.
ditto.

I'd say to check your fuse to see if it popped. A tightly shimmed gearbox or unadjusted motor height could require too much current to cycle and in the process, popped the fuse.


Quote:
Originally Posted by The Saint
Hey ILLusion, I was just looking at your spring test gun's spec today, trying to potentially imitate your setup. I noticed that you had the KM TN tapered cylinder. I was under the impression that you said they wereno good for guns over 1J. Is there a mistake on the specs of the test gun, or did you discover something new about the cylinder's performance for guns over 1J?
You're referring to the KM TN tapered cylinderhead, not the cylinder itself.
ILLusion is offline   Reply With Quote
Old May 29th, 2006, 01:16   #95
pinoyboy
 
Join Date: Sep 2005
Location: US
question about the systema m130. I think I read somehwere that systema rates the fps of their springs with .25g BBs. I think you said that illusion. So that would be around 420-430fps with .25g correct?
pinoyboy is offline   Reply With Quote
Old May 29th, 2006, 02:49   #96
ILLusion
GBB Whisperer
 
ILLusion's Avatar
 
Join Date: Jun 2002
Location: Toronto
From my experiences with springs, that would seem to be the case, although there are some situations that would make the resulting velocity to be different from what's calculated or what my chart says.

Some things that will affect variances in velocities:
- Inner barrel length
- Inner barrel bore
- What spring guide is used
- What piston head is used
- What BBs are used
- What gun platform are you using? AUG, P90, H&K, Armalite, etc? Some guns (like the P90) have a much better gearbox to feeding/hop up chamber to inner barrel connection and experience less air seal losses than other platforms. This is a big reason why most inquiries I get are why a user's velocities do not seem to be as high as in my chart.
ILLusion is offline   Reply With Quote
Old May 29th, 2006, 09:16   #97
pinoyboy
 
Join Date: Sep 2005
Location: US
My gun is a G36. The setup is
509mm 6.01 tightbore
type 0 cylinder
bearing spring guide
vented piston head with bearing
air nozzle
pinoyboy is offline   Reply With Quote
Old May 29th, 2006, 14:49   #98
ILLusion
GBB Whisperer
 
ILLusion's Avatar
 
Join Date: Jun 2002
Location: Toronto
Actually, I was just going over your initial statement...
M130 assuming meaning "130 m/s with 0.25g BB"

So 390m/s @0.25g is 1.76J
ArniesAirsoft FPS Calculator says 1.76J @ 0.20g is 437fps

I would say that number looks about right. In fact, I actually think that spring may shoot a bit higher in your setup. Perhaps up to 450fps.
ILLusion is offline   Reply With Quote
Old May 30th, 2006, 16:18   #99
cjfield1129
 
Join Date: Mar 2006
Location: USA
Quote:
Originally Posted by ILLusion
You're referring to the KM TN tapered cylinderhead, not the cylinder itself.
I guess the same theory would apply to the taper design of the Prometheus heads and Systema bore up heads. Strange as I have always had better results with the taper design in my 400+ fps guns. Interesting.
cjfield1129 is offline   Reply With Quote
Old June 1st, 2006, 16:33   #100
ILLusion
GBB Whisperer
 
ILLusion's Avatar
 
Join Date: Jun 2002
Location: Toronto
Quote:
Originally Posted by cjfield1129
Quote:
Originally Posted by ILLusion
You're referring to the KM TN tapered cylinderhead, not the cylinder itself.
I guess the same theory would apply to the taper design of the Prometheus heads and Systema bore up heads. Strange as I have always had better results with the taper design in my 400+ fps guns. Interesting.
Who said they were tapered? I have never seen any marketing material that stated they were. Even when I inspected them myself, I noticed no taper on them.
ILLusion is offline   Reply With Quote
Old June 1st, 2006, 20:11   #101
cjfield1129
 
Join Date: Mar 2006
Location: USA
My mistake, I was referring to the funnel shape on the piston striking side of the head. After additional reading, I realize that taper refers to the nozzle portion of the head. In that regard, is there a documented performance increase by using the type of head with a funnel as opposed to the flat surface such as the Area 1000 brand?
cjfield1129 is offline   Reply With Quote
Old June 5th, 2006, 00:07   #102
ILLusion
GBB Whisperer
 
ILLusion's Avatar
 
Join Date: Jun 2002
Location: Toronto
Quieter sound and reduced gearbox impact are the results of the funneled rear of cylinder heads. I don't believe there are any published documents with empirical results on this topic yet.
ILLusion is offline   Reply With Quote
Old July 25th, 2006, 00:54   #103
brently0725
 
brently0725's Avatar
 
Join Date: Apr 2006
Location: Mission, BC
A friend and I just installed PDI 120 springs in my TM MP5 SD5 and his G3 SAS and we were shooting 307fps steady. Just so you know for your chart if you want.
__________________
-TM AK Beta Spetz -TM MP5 SD5 -TSD VSR10 -Ares G39C -A&K Tan Magpul Masad -We Tech M9 Tac Masterling -1Tornado Impacts
V2/3 Gun Doc and BA experience
brently0725 is offline   Reply With Quote
Old September 10th, 2006, 12:55   #104
BBS
 
BBS's Avatar
 
Join Date: Aug 2006
Location: BC, Canada
Send a message via MSN to BBS
IMHO Illusion or someone should do a Sniper Spring Comparison Chart. a lot of threads have been started about Sniper springs and their fps output.

-BBS
BBS is offline   Reply With Quote
Old March 16th, 2007, 01:16   #105
ILLusion
GBB Whisperer
 
ILLusion's Avatar
 
Join Date: Jun 2002
Location: Toronto
Quote:
Originally Posted by BBS View Post
IMHO Illusion or someone should do a Sniper Spring Comparison Chart. a lot of threads have been started about Sniper springs and their fps output.

-BBS
It's in the works
ILLusion is offline   Reply With Quote
ReplyTop


Go Back   Airsoft Canada > Discussion > Upgrades & Modifications

Bookmarks

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Airsoft Canada
http://triggerairsoft.com/shop/

All times are GMT -4. The time now is 19:24.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.