Re: GL1800 trike - Gas Milage
Ben - that is about on par for the loss. Your Beamer should get about 50 or so as a bike, and running side by side with a wing, the wing will get in the low 40s. My Beamer gets over 50 if I have a sore right wrist, but gets 49 on normal cruize is a normal if somewhat spirited way. The standard wing would go from 45 to about 40 in the same conditions. A triked wing really suffers - I get about 35 overall, and have had it down to 30 pulling a camp trailer in the mountains.
A good self repsecting Harley will get about 50 also, but not a triked one. They go to the low 40s. Guess thats part of the price for having a trike. I will pay it.
I find it interesting that there is a craze for scooters like the Bergman because of fuel mileage - they get about 50 more or less. I got that on two Honda Pacific Coasts, and they were 800s. And the BMW K LT gets about that, and its a full size touring bike.