Airsoft Canada
https://www.cachetactical.ca/

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

Using MAPP gas?

:

Upgrades & Modifications

Reply
 
Thread Tools
Old November 22nd, 2014, 02:04   #1
ThunderCactus
Not Eye Safe, Pretty Boy Maximus on the field take his picture!
 
ThunderCactus's Avatar
 
Join Date: Feb 2007
Using MAPP gas?

So I've heard some people like to run MAPP in the cold for better performance than propane.

How much better performance?
What's the minimum temperature you've run it at?
(min temp of propane being in the 5-10 degree range, depending on your gun)
Does it raise your fps at room temperature?
Any added risk to the internals/seals from running the mix of gasses?
ThunderCactus is offline   Reply With Quote
Old November 22nd, 2014, 02:33   #2
redzaku
 
redzaku's Avatar
 
Join Date: Jul 2010
Location: Edmonton
this is for a kj works though, however it does mention that we m4 can run it with no problems
http://airsoftcanada.com/showthread....light=mapp+gas
and this, now if my understanding of mapp gas is sound... the main component, or majority of, is propylene
http://airsoftcanada.com/showthread....light=mapp+gas

someone else on a airsoft retreat forum
"I tested with 2 mags, one with propane and one with propylene, a couple of different ways. I don't have a chrono handy, so I did the PMC to get a range. I tested using my TM P226 with .2g bios and with .25g bios. The temp outside tonight was in the low 70s, and I let both mags warm for 10 minutes prior to each test, and they felt room temp to the touch.

On the PMC, propane puts it right around 290fps, which is confirmed by prior chrono results with that gun. The propylene put it at 340fps+, and I'd guess based on the feel of it that it was right around 350fps.

The kick with propylene was noticeably harder, enough that I think using it full time when it's >70F might cause wear that propane normally would not. Unless your gun is designed for CO2, propylene seems like it would damage the parts that take impact during a cycle. Personally, I wouldn't use it when the temps are above 60F.

The cool down, or lack thereof, was interesting. Normally when I rapid fire a full mag the magazine is cold (not just cool) to the touch, and the pressure drops noticeably toward the end of the mag. With propylene, there was no noticeable drop in pressure, and the mag was barely cool to the touch.

My thought, after trying it, is that during winter when gas guns are problematic, using propylene might be a good way to be able to use your pistol effectively. Between the lack of significant cool down and the higher pressure, performance should approximate that of propane during >70F weather. Using it when it's warmer, however, is not advisable.

We are supposed to get a few nights in the 40's this week. I'll try these tests again when it's cold outside and let you know how it performs."
__________________
Love and Tolerance
Coffee, what purpose does these serve?

My little Soviets, Communism is magic
People's internet voices are always angry...
А ну, чики-брики и в дамки!
За Родину!
BRRRRRT!

Last edited by redzaku; November 22nd, 2014 at 02:41..
redzaku is offline   Reply With Quote
Old November 22nd, 2014, 02:57   #3
ThunderCactus
Not Eye Safe, Pretty Boy Maximus on the field take his picture!
 
ThunderCactus's Avatar
 
Join Date: Feb 2007
Neat.
The smell is something else, the distinct aroma of acetylene mixed with burned burgers and farts.
ThunderCactus 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
https://www.cachetactical.ca/

All times are GMT -4. The time now is 22:12.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.