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I have a katama with a 12 gallon gas tank under the seat.I want/ need more fuel capacity (24+ gallons). Does anyone have any suggestions or ideas of where to put a new tank and what kind of tank to buy.
Thanks.

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I am not sure what size fuel tanks the Katama will accommodate...

You might be able to fit two 12 gallons tanks or maybe one 24 or 27 gallon tank...
Check the Tempo tank sizes and also see this photo and info.
http://www.whalercentral.com/photogal...hoto_id=68

Some of the Tempo Tanks:
http://www.tempoproducts.com/products...&prod_id=2