Just trying a few more things while waiting for more bits to arrive. This time using a small ESC for the smoke, and using CH 6 (rotary pot) on the TX. Water is adjustable with the voltage reg but could be hooked to the motor ESC as well, with a voltage reg used to set max flow. I'm just using the Heng long smoker box (modified) for this test.

This version of a smoker box uses an E-Cig element in an alloy electronics enclosure.I gave the lid and box a 7mm haircut on the mill to reduce the size, (now 50x50x26, - was 50x50x33) but it could still be 1/2 the width. haven't found a smaller alloy box yet but might come across one, (only really needs to be 35mmx35mmx25mm The element is mounted on a bracket screwed to the bottom of the box (the box being the resevoir and neg) and against the outlet tube, and the pos wire runs through the side (in silicone tube) to the element.

The box is packed with cotton wool which is surrounding the element and soaked in smoke fluid (in this case baby oil) but leaving a passage through the center for air flow. I'm waiting for a couple of air pumps to arrive but I've used the old smoker unit pump again to demo the smoke and pulsing, (makes good smoke rings too)😊

The element is capable of taking 4.5v, but I'm only using 2v for the test and it smokes quite well. The pump is running on 7v but can be varied from around 3v - 8v. The large tubes are to allow for later exhaust fitting (water or dry stack). Once I get the air pumps I'll be running this one with the water again. I've done this (like Grahams version to be able to easily replace the element as the Heng Long smokers, while working ok (but noisy) have non replaceable elements, so if you kill one, it's off to file 13 at the end of the bench😉😁

The pump actually works quite well and if you mount it on sponge rubber it is reasonably quiet and could still be useful in a boat with a bit of interior room.

Using the modified fan forced Heng Long smoker box, and a dead unit pump to pulse the smoke. This version is a 'dry stack one', which would look good on tugs and work boats. Still working on perfecting the 'wet' version.

This is a first try at a simpler quieter smoke unit. I used the smoker box/element off the Heng Long tank/car smoker unit with a 40x40 5v fan (the fan being voltage controlled by a 5v UBEC and the lot being run by a 2s Lipo (with a y splitter for the fan UBEC and the element using JST leads. Doesn't smoke that well as I had broken then repaired the element previously, but the other one I have smokes a lot better, and has a better type of element (possibly a newer version) Some photos etc on the smoker discussion. Unit is almost silent (the noise you hear is the camera and outside noise, as the window was open)