Michael. That’s so cool! What a fantastic hull. I would spray it with red-oxide, then spray the top black..add a boot topping line and leave it at that. The thinnes of the spray should let you see all that detail but provide adequate protection bearing in mind how much time the hull will be actually in the water.

Propshaft lube. This something we cannot agree on as to what’s best.

Oil filled, smear of grease, drop of oil now and then on bearings, oil inner bearing and let water lube the bottom one….there is no right answer. Some swear by this or that….

your choice really, but just DO NOT pump the shaft full of grease! As this causes massive drag on the shaft and strains the motor.

Ashley.

As Ashley says, no straight answer but everyone does agree that a stern tube full of grease will invariably overload, if not stall, the motor. I was once advised by a supplier to use grease in a 8cm long 4mm stern tube with a 10cm long 2mm shaft. It wouldn't even turn!

Sealing the ends with a spot of vaseline or some form of waterproof grease on the thrust face and maintain minimum clearance is a good idea and filling the tube with a light oil to prevent corrosion is usually a good way to go. If not already fitted adding an oiling tube to the top of the stern tube is also worth thinking about.

Hi Michael

I think you can go with the lube ideas previously mentioned. Depending on access, a lubrication tube would be worth considering as Richard suggests. I think "Model Boat Bits" do a kit which you may be able to 'retro-fit'.

As for determining the waterline, I think I would start by weighing everything you are planning to put inside the hull – motors, batteries, radio etc.- the lot. Then, plug up all the leaks (Blue-Tack /whatever's to hand) and find some water -.kiddies paddling pool, garden pond, friend with a pool (you should be so lucky !).

Initially, I would float it empty, being a steel (?) hull it should sink to a 'natural' level but may be a bit 'wobbly'. Note the waterline and the boat's trim – eg bow low /stern low and any side-to-side list.

Now add ballast equivalent to the weight of the planned internal equipment. Move it around until a satisfactory trim is found.

You may find the level is higher than you thought acceptable. Come back to us with some photos. I'm sure the experts will be able to say what's safe. Then you can draught out your lines…

Cheers for now,

Dave

Edited By Dave Cooper 6 on 09/05/2021 22:11:20