SOHC.co.uk Forums > CB350/400

fuel tank

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mickwinf:
I am not convinced that air pressure was the cause of this as air pressure from inside the tank would force tank out in an outward direction in all areas so would tend to push the centre tunnel sides nearer rather than further apart. Also compressing the outer part of the tank may sort the outer shape but I doubt it would affect the tunnel area. Is it possible there are different sizes of mounting rubbers to take up the distance?

steven400/4:
i,m a man that likes everythink right on my bike but you could get some ali pipe glue it over the lugs on the frame drill out the rubber holes to fit or glue two rubbers together and cut to size

ka-ja:
Hi,
     The "damage" probably occurred during some form of accident, as there was a knee dent in one side of the tank, and I failed to spot the inner damage while sorting all the other pieces ready for painting, I will try a squeeze/hug, but just how much force will it take?., it is a long way out, the two front mounts are angled downwards quite a bit, and only engage by about 6mm each side, giving 20mm of side play. And it looked so good sat on top of a wardrobe the last 6 months!
      As for extending things, I am not too sure, there is a lot of structural strength in the correct fittings, and a lot of weight in a full tank of fuel, will try for a photo.

Bryanj:
Mick, way back when i saw several where owners had tried to save money and used an air line, dont know the exact physics but the tunnel has many shapes into the flat and is basically stronger. What happens is the tank "Uncurls" from arroung the curve at the top of the tunnel hence wider at the front. Done with care and lots of padding the ratchet strap will probably be a better job

Dan:
I can see what you mean Bryan. If you pressurised a tube in the shape of a capital C it would open out.

Kaja - I have a spare tank that needs some work ( but is the right shape ). If you are interested you can have it for a nominal sum, nothing like the extortionate prices on eBay. PM me and I can send some pics

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