Resurrecting the K ClassI have spent many hours of head scratching figuring out how to assemble this without cutting up the hardware, but . . .
It is not the manufacturers problem that I am obliged to use 40 MHz in the UK. However, the most compact 40 MHz Rx is far too large to fit in there. My only option was to do some Dremel reconstruction to widen and deepen the recess in the resin block. The top edge of the Rx no longer fouls the tube, and the servos now virtually sandwich it. By almost straightening out the 90 degree “Z” step in the alloy mount the servos are lowered by about 3 mm which now gives just enough clearance between the ends of the shortened servo arms and the tube wall.
Original mounting block & tray
After reworking the cast block for larger 40 MHz Receiver
40 MHz Corona Rx and servos just fit.
The snort pump will go on my new bracket in front of the circular plate, and the ESC under it. With a tiny rudder and props only 25 mm apart twin ESC’s with mixer would enable a more practical turning circle. Can two 1A Action P82’s handle type 280 motors though?
More components now on order. The special waterproof 2A on/off switch with boot, which I have now ordered from the USA. I also need a 7.1V battery, and am advised that 1800 mAH should be sufficient. 2 mm ID silicone tubing for the air pump.
More 1/6 inch brass rod bought as even with the servos are in their designed position two pushrods are too short to reach the forward pair.
So, plan made. Dry fit everything to ensure it fits. I will need to polish the rods and make them easier to slide, form the rods to shape, then fit them. I intend to connect up the electrics, to make sure it all works, before setting the servos in hot glue.