NJMike
60+ Posts
My brother and I are considering converting our ‘21 Goldwing Tour DCT’s at the CSC factory. We are wondering how much the average MPG might change after the conversion. We both are “conservative” riders.
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My brother and I are considering converting our ‘21 Goldwing Tour DCT’s at the CSC factory. We are wondering how much the average MPG might change after the conversion. We both are “conservative” riders.
Welcome! My experience is a little different. But, I'm dealing with older Goldwings. My riding is/has been rather conservative. When riding the 3 different GL1800s (2 wheelers) I've owned, my fuel consumption was pretty consistent at 38-40 MPG unless I got on the interstate and cruised 70+ MPH. Then it went down a bit. Going to a trike of the same vintage, my MPG dropped to a very consistent 34. Same roads, same riding style, same GL1800 engines. I have the auxiliary fuel tank bringing my total capacity to 10 gallons. Very glad to have it. Good luck..... Jim
My brother and I are considering converting our ‘21 Goldwing Tour DCT’s at the CSC factory. We are wondering how much the average MPG might change after the conversion. We both are “conservative” riders.
Another question - my understanding is that the aux tank is installed somewhere that is higher than the existing tank, which is why it gravity feeds into the existing tank. So when you gas up, which tank does the gas go into first? And does the filling take extra long because of the gravity feed system?
Someone please correct me if I’m wrong….But I think it’s just opposite….The standard tank drains first and then the gas is pumped up
from the aux tank into the standard tank The Aux tank has it’s own pump.
according to the CSC website the tank is gravity fed with no pump.
Well, Here's the rest of the story..... The aux tank does not have any pump. The bottom of the main tank is below the bottom of the aux tank. The top of the aux tank is below the top of the main tank. So with the trike being level, like in a gas station, the aux tank fits between the top and bottom of the main tank. Hope this makes sense. The aux tank vents into the main tank vent so there is no separate venting for it.
Imagine both tanks being completely empty. When starting to fill with fuel, the bottom of the main tank fills first. Then as the level rises, fuel begins to flow into the aux tank as both tanks get fuel. Then when the aux tank gets full, all the remaining fuel goes into the top of the main tank. Both tanks are then full. There is no separate fuel gage for the aux tank. The first fuel used will lower the level from the top of the main tank. Gage will show a relatively quick drop. Then as more fuel is used, the level of both tanks goes down. During this period, the fuel gage moves very slowly. Once the aux tank is pretty empty and the fuel light comes on, there is between 1 1/2 and 2 gallons of fuel left.
This system works very well. No mechanical or moving parts. The only down side is it take a little longer (maybe a minute or so) to fill up. The main transfer hose between the aux and main fuel tank is 1" dia. so the fuel flows pretty well.
Hope this clears things up..... Jim
Hi, I’m Ironhorse54, NJMike’s brother. My first post and happy to be here. Question: where is the aux tank located? What njmike is asking is when you gas up does the gas go into the aux tank first or 2nd? How is the aux tank filled?
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