Post by BroJames on Dec 2, 2007 8:09:32 GMT 8
In airsoft batteries, Europe is more careful and advanced than US.Their favorite aeg is JG and they have totally phased out NiMH in airsfoft. They are using only 15C for airsoft as follows.
7.4v LiPoly NCM (Nickel Cobalt Manganese) to replace all 7.2v to 9.6v NiMH, whether in airsoft or r/c. This is recommended upto PDI 190% springs and can still maintain a ROF of 15-17 rounds per second which I think is not bad at all. The PDI 190% can reach up to 470-480fps which is the favorite velocity in Europe. At 7.4v current flow is lower and they don't overdrive the motor, don't over pull and push the pistol, don't exagerate the voltage and current to the motor since the spring is only PDI190%. The 2000mAh measures only 8mm thickness ranging from low den of 2000mAh, mid den of 2400-2600mAh, to high den of 2800-3200mAh depending on the maker. The 2000mAh can already fire 5,000rounds of BBs and still maintain a ROF of 15 rounds per second. Common velocity using 7.4v Lipoly are as follows
PDI 130% = 380fps
PDI 160% = 425fps
PDI 190% = 470fps
However, in most countries, the 7.4v is more expensive than the 9.6v as only good lithium can do at 7.4v. There are essentially 4 configs. 16mm at 2000mAh. Chaku and stick at mAh. Round cells stick at 1300mAh.
11.1v LiPoly NCM to replace all 10.6v to 14.4v NiMH. So, they have only 2 kinds of voltage but different config and capacity. Although the 7.4v can drive the M130 spring, the 11.1v is the recommended volartge for all higher upgrades from M130 or its equivalent and higher. The 11.1v has 2 more sizes than the 7.4v. 20mm and big chaku type.
In r/c a high sensity 300mAh LiPoly NCM can let a helicopter fly over an hour without recharging but usually the flyer get tired after 5-8 minutes, fly it 2-3 more times, then retire so a single battery is enough for most use, even in competition, for one flight. The bigger 7.4v at 5200mAh and 15C can run scale speed of over 200mph, almost the speed of Nitro Gas Engine R/C.
In Europe, they don't over power unless it is necessary. That is why you see their cars have lower C.C. engines compare to American bigf horsepower. The 15C and 20C 7.4v LiPoly NCM has been sent to you. Test them carefully to understand how these things really work, up to what capacity.
Note: From email message edited to refer to 3rd person.[/size]
7.4v LiPoly NCM (Nickel Cobalt Manganese) to replace all 7.2v to 9.6v NiMH, whether in airsoft or r/c. This is recommended upto PDI 190% springs and can still maintain a ROF of 15-17 rounds per second which I think is not bad at all. The PDI 190% can reach up to 470-480fps which is the favorite velocity in Europe. At 7.4v current flow is lower and they don't overdrive the motor, don't over pull and push the pistol, don't exagerate the voltage and current to the motor since the spring is only PDI190%. The 2000mAh measures only 8mm thickness ranging from low den of 2000mAh, mid den of 2400-2600mAh, to high den of 2800-3200mAh depending on the maker. The 2000mAh can already fire 5,000rounds of BBs and still maintain a ROF of 15 rounds per second. Common velocity using 7.4v Lipoly are as follows
PDI 130% = 380fps
PDI 160% = 425fps
PDI 190% = 470fps
However, in most countries, the 7.4v is more expensive than the 9.6v as only good lithium can do at 7.4v. There are essentially 4 configs. 16mm at 2000mAh. Chaku and stick at mAh. Round cells stick at 1300mAh.
11.1v LiPoly NCM to replace all 10.6v to 14.4v NiMH. So, they have only 2 kinds of voltage but different config and capacity. Although the 7.4v can drive the M130 spring, the 11.1v is the recommended volartge for all higher upgrades from M130 or its equivalent and higher. The 11.1v has 2 more sizes than the 7.4v. 20mm and big chaku type.
In r/c a high sensity 300mAh LiPoly NCM can let a helicopter fly over an hour without recharging but usually the flyer get tired after 5-8 minutes, fly it 2-3 more times, then retire so a single battery is enough for most use, even in competition, for one flight. The bigger 7.4v at 5200mAh and 15C can run scale speed of over 200mph, almost the speed of Nitro Gas Engine R/C.
In Europe, they don't over power unless it is necessary. That is why you see their cars have lower C.C. engines compare to American bigf horsepower. The 15C and 20C 7.4v LiPoly NCM has been sent to you. Test them carefully to understand how these things really work, up to what capacity.
Note: From email message edited to refer to 3rd person.[/size]