i do want to be able to use it without the core. thanks for the answers.
@Fredster951 why the 8? seems all i ever hear about the 8 is problems with the button assembly. i'm interested, but what makes it so good?
The reason I recommend the 8 to the experienced UP Tech user is the following;
1.)Fully serviceable, the 8 can be fully disassembled. Every single part can be broken down and cleaned. If your 8 stops working you can fix it yourself at home. No down time. Compared to sending in Product to get repaired, the downtime is significant. I usually find my 8 just to need a 1/8 screw adjustment once in a while. No dreaded 3 flashes. Other than that, it's solid!
2.) Durability, the 8 is hand down a heavy combat tank. Very durable. Very heavy quality feel to it. The 8 is simple and houses few parts. All these parts are super durable. Stainless steel, PTFE Teflon , and gold plated connections is all the 8 contains. Proven and durable materials.
3.) Universal, the 8 is universal. Like the Persei it is 3.7/7.4v mode. You also have 610/510 on the go. The 8 does not discriminate against sub ohm coils. It will run any coil at any ohm resistance value. For the brave, you can run 11v set up.
All said and done, there is a few things you should know about the 8 before you man the gun is;
1.) The 8 is for advanced users. You need to set it up to work and fire consistently. You need to learn this device. Once you learn it you will find what needs to be checked once in a while. For example my 8 will misfire once in a blue moon. When it does, it's almost always the center button screw coming loose. I just tighten it 1/8 of a turn and the aftermath is clouds.
2.) No short protection, no circuit board to keep you safe. You must assemble the SR71/74 correctly and the 8 to prevent a short. I don't meant to scare anyone because this is not rocket science. At most maybe a collapsed spring if using proper OEM equipment. No off feature so don't store it where it can be activated by accident. Just be safe and you will be fine. If you can assemble a SR cartridge correctly, the 8 is a piece of cake.