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Go Go Gadget!

8/7/2015

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In my previous post about the BMW Adventure pannier racks, I mentioned my lust over their incredibly sturdy, indestructible as heck, and amazing grab handles the rack were (and I have tested many).  One of the other advantages of the BMW Adventure pannier racks is that the Camel Tank auxiliary fuel tank is designed specifically to be used with them.  The Camel Tank adds 1.8 gallons to the bikes 4.2 gallon underseat tank (6 gallons total), which is a 42% gain!

In the following photo, you can see the tank has been molded around the support bracket for the adventure rack. The BMW Adventure rack also provide a nice protective "exoskeleton" for the fuel tank. No need to worry about make a tip over, an gas-fueled inferno in the middle the neverland wonderland! 

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While gas range is highly variable on this bike, in normal riding I plan on about 280 miles per fill up.  If one the highway >70MPH, it will drop to around 200 miles per fill up.  

The first generation of F650/F800s twin had a fuel gauge which apparently had a hard time dealing with the unique shape of the underseat tank. It was often inaccurate for the first half of the tank, as the float bobbed in this odd geometric pool.  To "fix" this issue, the F700GS' now have a fuel gauge that only reads below 1/2 tank. The camel tank operates by via vacuum pressure and the fuel needs to transfer to the main tank first.  Thus, your fuel gauge continues to operate as "usual", however, it will stay pinned longer at the top of the gauge for an extra 1.8 gallons. 

​It's clear that the inventors of the camel tank really thought this mod out.  Although I enjoy modding bikes, I can also appreciate that finding a buyer that has the same needs and/or can afford to the higher price point, I usually end up returning the bike to stock before sale.  For this mod, I have only drilled a single hole in the bike.  This is in the following photo, you see the hole on the rear sail panel.  You can either to decide to live with that little hole, or buy a spare panel from BMW for around $50.
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As for the plumbing, the Camel Tank is plumbed into the main bike using vacuum.  There is minor amount plumbing which is needed, however, the kit comes with the one way valve and the "T"  and extra hose to make this happen.  No removal of the fuel pump is needed.  Maybe a picture later. 
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