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Fuel tank mounting

This is a discussion on Fuel tank mounting within the Technical forums, part of the Caferacer.net Forums category; Hello. I am in the process of modifying my XBR500 by replacing the large tank with something slimmer. The GS400 twin tank looks as though ...

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  1. #1
    Junior Member mattsway's Avatar
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    Fuel tank mounting

    Hello. I am in the process of modifying my XBR500 by replacing the large tank with something slimmer. The GS400 twin tank looks as though it will clear the seat rails, but to get it on, over the toptube, I would need to trim the mounting cups down by 6mm / 1/8" each. This tank holds 14L / 3.7 US gallons. Doable with a hacksaw? Many thanks for your help.

  2. #2
    Senior Member TrialsRider's Avatar
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    and a good hand file to clean up the edges, probably real easy yes. is pretty soft steel

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    What's that bike like, is it like an Ascot or better?

  3. #3
    Junior Member mattsway's Avatar
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    Quote Originally Posted by TrialsRider View Post
    and a good hand file to clean up the edges, probably real easy yes. is pretty soft steel

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    What's that bike like, is it like an Ascot or better?

    Thanks. Any idea how slim I can go with mounting cups for future reference?

    The XBR was Honda's 2nd go at a big single for the road, after the Ascot. It's loads of fun to ride, bags of character, good handling, but maybe a little underpowered as the 44hp claimed by Honda is widely disputed by owners who reckon 35 might be a more accurate figure.

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    Senior Member TrialsRider's Avatar
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    Quote Originally Posted by mattsway View Post
    Thanks. Any idea how slim I can go with mounting cups for future reference?
    ...
    Would be a guess on my part without seeing it but if I can't pull the fuel tank off the bike by hand, it's on there good enough for me. I have a motocross bike where the fuel tank is held on by only one bolt at the front and a little rubber strap over a hook at the back. ymmv.

  6. #5
    Junior Member mattsway's Avatar
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    Quote Originally Posted by TrialsRider View Post
    Quote Originally Posted by mattsway View Post
    Thanks. Any idea how slim I can go with mounting cups for future reference?
    ...
    Would be a guess on my part without seeing it but <img src="https://www.caferacer.net/forum/images/smilies/wink.png" border="0" alt="" title="Wink" class="inlineimg" /> if I can't pull the fuel tank off the bike by hand, it's on there good enough for me. I have a motocross bike where the fuel tank is held on by only one bolt at the front and a little rubber strap over a hook at the back. ymmv.
    Can't argue with that logic, tested on a 'crosser! Thanks.

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