Mystery solved?
Well I finally measured the capacity of my tank - and it's only 38.5 litres! Maybe Elkamet's mould is a bit erratic? On the plus side, I am now using 100% of the fuel thanks to a mod by Pat of Mobitec. Here's my email to Touratech:
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Willi,
apologies for not writing in German. Like so many of the English my language skills are terrible. I am writing to you because Touratech UK Ltd told me your English is particularly good.
I am a member of
www.ukgser.com and I have asked many of your customers how much of the capacity of the 41 litre tank they are able to use. The answer is always between 33 and 37 litres - frankly many of these customers are irritated by Touratech's claim that 39 is possible. I am sure you have heard about this issue before. We have heard the same thing from American customers at
www.advrider.com - in fact from BMW riders all over the world.
I am planning to use my 1150GS (with your tank of course) in the Sahara so I am trying to get the maximum useable capacity. I have found that by detaching the fuel pump from its mounting point so that it rests oin the bottom of the tank I can use 38.5 litres. Not bad - but I was surprised I could not get more. So I drained the tank completely by removing the balance pipe on one side and then the other and bouncing the bike backwards and forwards until there was nothing left in the tank - well maybe a mouthful but no more than that. Then I filled the tank - it only took 38.5 litres! I really think Elkamet have been lying to you about the size of the tank - perhaps you should measure it again?
Please let me know what you think. Everyone at
www.ukgser.com is waiting for your answer.
P.S. I should also mention that we have one member who claims he can get more than 41 litres in his Wunderlich tank, which I understand is the same Elkamet model as yours - but I'm not sure if anyone believes him!
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