This is what I've been wanting to hear. I'm on my first CLR builds and wondering how long the insulators will last. Been thinking of going to nr-r-nr wires to avoid heat damage to the insulators. Can I assume your using regular resistance wire? With this sort of longevity I'll just stay with normal wire. Thanks for the info.
You're correct that the insulators are the weakest link in the CLR scheme. I just use 30 Kanthal for my coils. 5 turns on a machine screw puts me right at 1.65 - 1.66 ohms. I'm tootle puffin too @Nanny22 9.5 watts and I'm happy.
I know the Joytech site says you can dry burn the CLRs, and I have (carefully) a few times, but I moved away from that practice, and just recoil when I rewick. It doesn't take much more effort, and I think (just my opinion) that it's much easier on the insulators. I have a limited electronics background and know that once you burn the edge of the insulator, and it leaves that little black mark (called a carbon trace, I believe) that leaves a path for current to jump to ground, at that trace. At the low current levels of tootle puffin, it may not be a big deal, but I prefer to err on the side of caution.
I like to be kind on my insulators..lol. I'll pre-wind a few dozen coils when I'm just watching TV. I just toss them in a little 35 mm film canister, so it's easy to put in a fresh coil when I rebuild. I sure wish I could find a source for the insulators.