Re: Re: 1952 Paris built Normale RSJ 834

@OSL282 wrote:

If the tank is a maximum 50 litres (it’s what it’s marketed at) then potentially 3.75 litres of petrol is always unused as the pickup won’t reach it and will pull air.

The pickup only reaches 18.5cm down from the tank top when you factor in the rubber gasket and the tank is actually 20.0cm deep internally.

Replaced the tank today and the joint between the breather and downpipe had failed. Old tank is quite a bit lighter than the new one and apart from the at joint is in good condition and clean inside and looks to have been galvanised on the outside.

[attachment=1:1v6ikl55]old_tank.jpg[/attachment:1v6ikl55]

[attachment=0:1v6ikl55]old_tank_2jpg.jpg[/attachment:1v6ikl55]

Potentially I suppose that could be repaired but I don’t know how it was attached, the new tank has a definite weld where the breather connects with the filler

Now the tanks are the same depth internally but the old pickup pipe was shorter than the new one by 12 cm and was only 17.3cm to the end of the strainer so that means 13.5% of the fuel which = 6.75 litres remained in the tank below the pickup.