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increased gas capacity

  • Thread starter Thread starter buckeyemike
  • Start date Start date
B

buckeyemike

Guest
Just wondering if anyone has added an extra gas tank to rear, or increased tank size of oe. Or any other ways to increase capacity of gas. L bike here with small tank.
 
Trade it for a "G" 22 liters (5.8 USG) I get around 350km (220 miles)on a tank of gas on my G, I get around 38 - 39 miles to the gal.
 
Hi,

It wasn't an "L" model, but a while back someone pointed out a craigslist ad for an 850G that had an extended range tank on it. I think it held something like 10 gallons. It looked kind of weird, but you wouldn't have to fill up very often.

Would it be cost-effective to get one fabricated? About all you can do is ask around and see if there's someone in your area who can give you an estimate for the work. It would be interesting to see if someone could design a larger tank with good lines for the "L" models.


Thank you for your indulgence,

BassCliff
 
buckeyemike said:
Just wondering if anyone has added an extra gas tank to rear, or increased tank size of oe. Or any other ways to increase capacity of gas. L bike here with small tank.
Click to expand...

This all depends on how creative you are, you can mount different tanks if they look right.

Or if you can weld you can clean the tank, let it dry out, then custom fabricate sheet steel extensions on both sides to add an extra gallon to a a gallon and a half before it starts to look a little big on the bike.

You can also go with custom tanks that hang on both sides of the bike and use an electric fuel pump to get fuel to the main tank.

I could go on forever on options but google custom choppers and see what they do and go from there.
 
Yup, I have larger tanks.
GS-LR.JPG

This one I built back in 1980, it is extended 4 ?" and narrowed right down to the frame rail. It is just over 5 ? Gal, good for 2+ hours on a track.

And here is another one in process,
GS%20side.JPG

This tank came off one of my GS750, As you can see it is being raised and narrowed. At this time it is ready for coating the inside and final welding. It should be on the bike this summer.
 
Both tanks look great! you can't tell they have been made bigger and still keeps the original lines.
 
biker_guy said:
http://www.tourtank.com/ these guys add tank in the rear


Wasn't there a year gs I think a g or an l that had a 6 gal. tank? I swear I remember reading about that some where.
Click to expand...

My '83 GS1100G has an 5.8 gal stock tank and at 44mpg average will go 255 miles. But I've never pushed it beyond 230 miles after switching to reserve to be safe. Why risk a roadside hassle by passing up gas stations to prove a point.
 
yeah especially with no kick start if you kill the battery trying to get the reserve to flow
 
the 79-81 850Gs and the 82 and up 850Gs and 1100Gs had the largest fuel capacity of any of the GSs, with the "Hans Muth" 1100Es taking a close second, if not a tie, depending on which specs you're looking at. The big G's held 5.8gal, and if I remember right the 1100Es hold right around there as well. Now, before you start cranking out math on how far you can get on one of those tanks, its widely suspected that you'll never get the last .25-.5 gal out of the tank. So keep that in mind.
 
kilog55 said:
yeah especially with no kick start if you kill the battery trying to get the reserve to flow
Click to expand...

You can put the petcock on prime for 30-60 seconds to gravity fill the bowls before cranking and it should start right away (if tuned properly).
Just be sure to put it back to it's normal position before starting so you don't forget to do later. You will avoid extended use of the starter and draining the battery, if you follow this procedure when the bikes sits for more than 2-3 weeks, too.
 
Last edited:
yeah i found that out just recently as the bike wouldnt start after sitting for most of this winter and the battery drained out.

put it on prime for a bit and it fired up after 3 crank overs. :clap:

but good to know for a newb like i am :dancing:
 
buckeyemike said:
Just wondering if anyone has added an extra gas tank to rear, or increased tank size of oe. Or any other ways to increase capacity of gas. L bike here with small tank.
Click to expand...
The 4.3 gallons on your L tank will give you about 150 miles between fill-ups, and unless you are a hard-core Iron Butt rider, that is just over two hours of riding and it's time to stop for a few minutes.

Your bike is the same as my wife's bike, and when we are on a trip, she goes onto reserve at about 140-150 miles. If I am towing our trailer with the Wing, I am approaching reserve, too, so we use her bike to signal when we stop for gas, but in the planning stages, we figure gas stops about 125-150 miles apart.

.
 
Steve said:
The 4.3 gallons on your L tank will give you about 150 miles between fill-ups, and unless you are a hard-core Iron Butt rider, that is just over two hours of riding and it's time to stop for a few minutes.

Your bike is the same as my wife's bike, and when we are on a trip, she goes onto reserve at about 140-150 miles. If I am towing our trailer with the Wing, I am approaching reserve, too, so we use her bike to signal when we stop for gas, but in the planning stages, we figure gas stops about 125-150 miles apart.

.
Click to expand...

Doesn't the mileage depend on the size of the engine too? I don't recall him mentioning which bike he had.
 
Man, I must be hell on a bike because I can never figure how you guys get these high 40's mileage numbers. My 1000G gets about 30 MPG if I baby it.
 
buckeyemike said:
... L bike here with small tank.
Click to expand...

Steve said:
Your bike is the same as my wife's bike, ...
Click to expand...

Rein said:
I don't recall him mentioning which bike he had.
Click to expand...
All true. He did not mention what bike he had, other than that it's an L model. I have had the pleasure of meeting Mike and have seen his bike. It's just like my wife's bike, an '82 850L. The '82 is important, because I think the '81L had a smaller tank, about 3.5 gallons, the '82 has a 4.3 gallon tank.

Finally, now you can see why we ask all you newcomers to add your bike to your signature. Does not have to be a fancy entry with links and pictures like some of ours, just simply mention what bike you ride. In Buckeyemike's case, his sig line could read:
__________________
1982 850L

:o

.
 
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