Flux Deluxe S/N 100 - up next!
Hi all,
I am right on the doorstep of making Flux Deluxe #100, so it seems like a good time for an update on the project.
It's been about a month since I began making new heaters again, and about six weeks since I changed to a more reliable heater MOSFET. In that time have been busy making and repairing heaters. These have been performing well with the new parts, so yay! It was a rough Spring, but Summer is here and my stuff is working; all is well in Fluxerland.
With that as a prelude, I have an exciting update to the project: As I promised in last night's post, I am introducing a change to the heater circuit that enables it to deliver better flavor, extraction, and reliability, while
ALSO being simpler for me to build and troubleshoot. "Simpler to build" should translate into increased production, too.
This is the change: I am deleting the solid state MOSFET relay and its associated control circuitry - a past source of trouble - and replacing it with a sealed, analog, electro-mechanical relay.
Like this:
The new relay is on the left, circled in green. The parts it replaces are on the right, circled in red.
So what's the difference?
The power relay provides the high current to the circuit and functions as its gate valve, in effect metering the power that passes through it.
The solid state relay flows power quickly.
The analog relay flows power a bit more slowly.
The effects of the new relay are both subtle and not-so-subtle.
Subtle effects: Although this setup is not adjustable (apart from coil size), when powered by the analog relay, the heater ramps up more slowly than it does with the solid state relay, and the heat it makes penetrates more deeply. It adds approximately 1-3 seconds of heating time to each coil size, and this is especially evident in "the time between the clicks," - aka, the place where flavor and extraction live - which is extended with the new relay.
The hits with the new relay are smooth, flavorful, and vapor-filled. The slower heating time gives you a little more control. It's still quick, but what took 2-4 seconds now takes 3-7 seconds. I am not promising a revolution here, but I do think it works at least as well as before, if not better.
Smaller coil sizes are still more aggressive than the larger coil sizes. With the deeper heat penetration afforded by the analog relay, that means that each coil size performs a bit "better," where better = hotter and with better penetration. Keep this in mind if you are considering the 14mm coil, especially if you are a flower-only Dynavaper. The 14mm is great, but it will heat aggressively on
each heating cycle, and on heating cycles 2+ of a given load you may need to pull it before the 2nd click. You can refer back to my original sports car analogy, where some folks enjoy taming this sort of aggression, while others don't. The 15mm and 16mm sizes are also great, and may be a bit smoother for flower-only users. It's also easy to do a coil swap later, if you want one.
I am looking forward to the user reports on the new relay, as I think most people will be very happy with the way it performs. (I never predict 100% satisfaction w/anything
)
The battery performance with the new relay is good, but there are some differences between the analog and solid state relays, most notably the way they handle low battery situations: The analog relay has a higher voltage threshold and will stop working when the voltage falls below ~10.3V. The solid state relay will continue to function at these lower voltages (for a time), although operating at such low voltages is hard on your batteries and not recommended. In practical terms, the new relay works reliably and its battery life should be very acceptable to most users. (Again, I never predict 100% satisfaction w/anything...)
Not so subtle effects: It works at least as well with the new power relay as it did with the more complicated relay devices, IMHO!
No power relay MOSFETs to fail!
The new relay greatly (!) simplifies the circuit, making it easier for me to build and troubleshoot.
I estimate this new relay saves me ~30 minutes of actual, hands-on labor per build, which is significant! These devices are very labor intensive to make (no
,
), so finding a way to save this much real labor while also improving the device across the board is a massive win.
A moment of honesty: These devices require A LOT of labor to build. I enjoy it, but when I add it all up, the current design barely pencils out. Changing the circuit in this manner does a lot to correct this imbalance.
So what does this mean for you folks still waiting, and how does this change affect prices, options, etc?
Production speed: I am very hopeful that the new design will translate into quicker builds and higher output. My current output is pretty limited, so any improvement in production speed is going to be welcome! And since I am not in a position to add employees, simplifying the design seems like the best way to do this.
Pricing: Because of this change, the prices will remains the same, with the exception of the Top Mount Temp Control option (now $60), which requires the solid state relay and additional parts and labor to install. I am still going to offer this as an option for the folks that want it, as it works well and it's still a cool circuit, but I need to charge more for it as it does cost more to make, install, and maintain.
Current Flux Deluxe Pricing, as of July 2019:
Flux Deluxe Analog Relay base price: $135 + shipping, batteries not included, as before.*
Included options:
- coil size (choose one from 14mm, 15mm, or 16mm)
- mains charger (choose one from US/North America, EU, UK, AUS/NZ, or 12V)
Options that cost more money:
Underglass LEDs: $10*
External Switch: $10*
Built-in Battery Meter: $15*
Top Mount Temp Control and Solid State Power Relay: $60
Cherry wood case: $30 bare; $35 rubbed oil finish*
Cherry wood case w/Fluxer Logo: $40 bare; $45 rubbed oil finish*
Cherry wood case with custom art: $65+, some intellectual property restrictions apply*
*Price unchanged
Thanks, all, for your continued support! I am very hopeful the new circuit will be well received.
I will be sending out a new round of Order Confirmation invites tonight and tomorrow, to kick off Flux Deluxes numbers 100+! I am looking forward to making heaters for as many of you as I can.
Cheers,