Slow Monster rebuild

350TSS · 18-03-2019, 08:11 AM

The seat base mould now has 4 coats of 300g mat the divider has been drilled and bolted and and the complete mould is nearly ready for separation from the base plate. I am a bit worried that the seat contour might form a mechanical lock but we will give it a go tomorrow when the resin has fully cured
With both brain cells working overtime I think I now have a cunning plan for:
a) the formation of the ledge to locate the tank bottom mould and to provide a good sealing “gasket” face to bond to, and
b) the clear strip in the tank top mould acting as a fuel gauge (the idea has had a resurrection as I think I have a way of doing it which will not be adversely affected when I put the anti-ethanol resin in the tank after joining the top and bottom halves together).
Still exercising both cells is how to brace/baffle the inside of the tank. It dawned on me that if the tank holds 25 litres of fuel (ish) then that would be 25 kilos if it held water and about ¾ of that if it holds petrol - say up to 18 kilos. I would like to reinforce the internal structure around the mid mounting points on the bottom of the tank to spread the load but need to ensure that when I put the bottom of the tank in that the reinforcing structure actually is in contact with the top and the sides and is capable of being securely bonded in.
I picked up one of these on fleabay (from China) for the princely sum of £1.71 delivered.

I did not expect it to work but it does – it will fit in the petrol tank overflow pipe that will emerge from the little expansion hump in front of the filler cap

18-03-2019, 08:11 AM	#11
350TSS Too much time on my hands member Join Date: Jan 2013 Location: Shipbourne Bike: M900 Posts: 1,421	The seat base mould now has 4 coats of 300g mat the divider has been drilled and bolted and and the complete mould is nearly ready for separation from the base plate. I am a bit worried that the seat contour might form a mechanical lock but we will give it a go tomorrow when the resin has fully cured With both brain cells working overtime I think I now have a cunning plan for: a) the formation of the ledge to locate the tank bottom mould and to provide a good sealing “gasket” face to bond to, and b) the clear strip in the tank top mould acting as a fuel gauge (the idea has had a resurrection as I think I have a way of doing it which will not be adversely affected when I put the anti-ethanol resin in the tank after joining the top and bottom halves together). Still exercising both cells is how to brace/baffle the inside of the tank. It dawned on me that if the tank holds 25 litres of fuel (ish) then that would be 25 kilos if it held water and about ¾ of that if it holds petrol - say up to 18 kilos. I would like to reinforce the internal structure around the mid mounting points on the bottom of the tank to spread the load but need to ensure that when I put the bottom of the tank in that the reinforcing structure actually is in contact with the top and the sides and is capable of being securely bonded in. I picked up one of these on fleabay (from China) for the princely sum of £1.71 delivered. I did not expect it to work but it does – it will fit in the petrol tank overflow pipe that will emerge from the little expansion hump in front of the filler cap