PROGREES!!
New transmitter and receiver fitted, and its back to the lake. The synthesised corona rx, used once, £20, has blown up, I wired it wrong
It was quite spectacular, another £20 wasted, but good news, I now have a surface running rc dorsal fin, well at least nearly, I need some serious submarine experienced help here.
Firstly, the rear planes have no effect at all, maybe not enough travel, although they look ok, or not enough surface area. The sub needs to be very nose light, sitting at 30degrees tail down when stationary, then a few clicks of throttle and it will surface run reasonably level, anything over that slow speed, it dives, regardless what the rear planes are doing. I tried with and without static front planes, still the same . After a while I sort of mastered something of a running speed, letting it dive, off the throttle, it surfaces (seems to take ages, I am not used to having a model disappear!) then bobs up anywhere really!
Rudder has little effect, the turning circle is like a train. Ballast seems to be a real art to get right, its almost on the verge of tail light when running, in spite of the angle at rest, when it does want to dive, the prop is sometimes leaving the water.
I wonder if a leveller will have any effect, once its over slow speed, and diving, its straight down, input from planes does nothing, you have to cut the throttle and wait for the natural floatation, if its gone too deep up comes all the gunge and weed attached to the nose, which slows the ascent.
So nearly there, its tweaking now. I am still thinking of linking the from planes to the rear, what do you think?