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Old 07-29-2012, 11:00 PM   #10
Kai Ju
Beastly Adventurer
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Joined: Jul 2009
Location: So Cal
Oddometer: 1,911
Underseat radiator

Worked out really well actually.
I initially only ran one fan which was ok as long as I stayed below high roadspeeds in high ambient temperatures.
Once I realized that one wasn't enough I added another fan which would cut in if coolant temps reached 210 F.
I tried a number of ducts and different extraction methods but found out that air never does what you expect it to and ended up with what you see in the pictures.
One question that came up more than once was whether the seat got hot. No it never did.
BTW, the fans were the stock pusher fans that would push the hot air down through the radiator towards the rear tire.
Radiator used was '03 VTX1800 with a mix and match of coolant hoses from a variety of bikes and cars.

The reason I went to the underseat radiator is that I never could stand the naked VTRs that retained the stock side mounted radiators, it just looked unfinished.

Glad you like it,
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