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Re:How FULL do you fill your tank & what kind of MPG?
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TOPIC: Re:How FULL do you fill your tank & what kind of MPG?
#1019323
RonK (User)
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Re:How FULL do you fill your tank & what kind of MPG? 1 Week, 6 Days ago  
--

On today's ride I thought I'd check again using my GPS in addition to my odometer since my rear tire has about 23,000 miles on it. It's pretty much the same as always been. Odometer reads 3.26% short. So if I add that to the odometer reading, I know how far I've really gone. That's the number I divide by the gallons added. I usually try for just above the bottom of the filler spout.

Today I got 63.53 miles per gallon riding solo. Even with a passenger I often get above 60 mpg. I don't ride fast, usually under 60 mph. Today had construction traffic, many back road curves, some city traffic, and some freeway.

Doing this can really spoil one, believe me. Whenever I "only" get in the 50's, I start to examine my day's riding to see where I goofed up. I think being easy on the wrist twist and keeping the speed down is what helps. That's one reason why so little of my riding is on freeways. We all have games we play. Mine is to see how high I can keep my mileage.

--
 
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#1019326
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Re:How FULL do you fill your tank & what kind of MPG? 1 Week, 6 Days ago  
RonK wrote:
--

On today's ride I thought I'd check again using my GPS in addition to my odometer since my rear tire has about 23,000 miles on it. It's pretty much the same as always been. Odometer reads 3.26% short. So if I add that to the odometer reading, I know how far I've really gone. That's the number I divide by the gallons added. I usually try for just above the bottom of the filler spout.

Today I got 63.53 miles per gallon riding solo. Even with a passenger I often get above 60 mpg. I don't ride fast, usually under 60 mph. Today had construction traffic, many back road curves, some city traffic, and some freeway.

Doing this can really spoil one, believe me. Whenever I "only" get in the 50's, I start to examine my day's riding to see where I goofed up. I think being easy on the wrist twist and keeping the speed down is what helps. That's one reason why so little of my riding is on freeways. We all have games we play. Mine is to see how high I can keep my mileage.

--


DAYUMMM!!!


Gotta be the lower speeds. IMPRESSIVE!!!


.
 
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Last Edit: 2017/08/08 17:34 By MidnightRide.
 
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#1019328
Firedog (User)
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Re:How FULL do you fill your tank & what kind of MPG? 1 Week, 6 Days ago  
First, need to verify you odometer is correct. The has been numerous reports of incorrect speedo/odo's.

And like Shore's said. I fill it to the same place (unless I'm on a road trip) and calculate from the pump numbers.

As far as punch the neck: a good steel center punch will do the trick. Need about a 1/4" dia hole. I'd do it with a full or near full tank of gas. That'll put above the UEL (upper explosive limit). Too rich to ignite. If you're too concerned, set the punch in position, cover the opening, then strike the punch.

I realize you think I'm crazy, but I've been in hazmat for 27yrs. I'm the guy that straddles an overturned gasoline tanker and drills a hole for stinger to pump out the gas.
 
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Last Edit: 2017/08/08 17:46 By Firedog.
 
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#1019329
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Re:How FULL do you fill your tank & what kind of MPG? 1 Week, 6 Days ago  
MidnightRide wrote:
RonK wrote:
--

On today's ride I thought I'd check again using my GPS in addition to my odometer since my rear tire has about 23,000 miles on it. It's pretty much the same as always been. Odometer reads 3.26% short. So if I add that to the odometer reading, I know how far I've really gone. That's the number I divide by the gallons added. I usually try for just above the bottom of the filler spout.

Today I got 63.53 miles per gallon riding solo. Even with a passenger I often get above 60 mpg. I don't ride fast, usually under 60 mph. Today had construction traffic, many back road curves, some city traffic, and some freeway.

Doing this can really spoil one, believe me. Whenever I "only" get in the 50's, I start to examine my day's riding to see where I goofed up. I think being easy on the wrist twist and keeping the speed down is what helps. That's one reason why so little of my riding is on freeways. We all have games we play. Mine is to see how high I can keep my mileage.

--


DAYUMMM!!!


Gotta be the lower speeds. IMPRESSIVE!!!


.


I think Ron rides downhill everywhere.
 
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#1019330
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Re:How FULL do you fill your tank & what kind of MPG? 1 Week, 6 Days ago  
Firedog wrote:
First, need to verify you odometer is correct. The has been numerous reports of incorrect speedo/odo's.

And like Shore's said. I fill it to the same place (unless I'm on a road trip) and calculate from the pump numbers.

As far as punch the neck: a good steel center punch will do the trick. Need about a 1/4" dia hole. I'd do it with a full or near full tank of gas. That'll put above the UEL (upper explosive limit). Too rich to ignite.

I realize you think I'm crazy, but I've been in hazmat for 27yrs. I'm the guy that straddles an overturned gasoline tanker and drills a hole for stinger to pump out the gas.


Great point on the full tank of gas as far as fumes are concerned. And you're the guy to know about whether the steel punch is safe. Thanks for the head's up.

I was shocked in one of my early hazmat firefighting courses to learn that gas itself in liquid form WILL NOT BURN. It's the VAPORS that actually burn. That's why we need a good fuel/air mix before our bikes will run.

Good to know.
 
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#1019332
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Re:How FULL do you fill your tank & what kind of MPG? 1 Week, 6 Days ago  
I typically get about 38 mpg, but I'm not running under the speed limit. If I baby it, I can get it over 40, but I'd rather ride the way I want and spend a little more on gas. It's still cheap fun.
 
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#1019343
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Re:How FULL do you fill your tank & what kind of MPG? 1 Week, 6 Days ago  
RonK wrote:
--

On today's ride I thought I'd check again using my GPS in addition to my odometer since my rear tire has about 23,000 miles on it. It's pretty much the same as always been. Odometer reads 3.26% short. So if I add that to the odometer reading, I know how far I've really gone. That's the number I divide by the gallons added. I usually try for just above the bottom of the filler spout.

Today I got 63.53 miles per gallon riding solo. Even with a passenger I often get above 60 mpg. I don't ride fast, usually under 60 mph. Today had construction traffic, many back road curves, some city traffic, and some freeway.

Doing this can really spoil one, believe me. Whenever I "only" get in the 50's, I start to examine my day's riding to see where I goofed up. I think being easy on the wrist twist and keeping the speed down is what helps. That's one reason why so little of my riding is on freeways. We all have games we play. Mine is to see how high I can keep my mileage.


Ronk I have got up to 58 in Co. riding hard. but here at home at 2100 feet I get a consistent 40 to 45 in normal riding. You altitude is why your mileage is much better than some of the guys who are commenting, who as I see are down close to sea level... It makes a lot of difference with a constant velocity carb.
--
 
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Last Edit: 2017/08/08 19:22 By Agpilot.
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#1019349
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Re:How FULL do you fill your tank & what kind of MPG? 1 Week, 6 Days ago  
I recorded mileage digitally at every fuel stop for close to 20K miles on my 02. Very consistent 38 MPG over the course of those miles. Seen a few putt putt rides into the mid 40's saw a low of about 27 flogging on it across the AZ desert to stay ahead of a winter storm.
With my 06, just after I got it, I actually ran out of gas pulling into the station. It took 5.3 gals to the bottom of the neck. My 06 is still factory jetted. Flogging it across the desert recently at 85 to 90 it got a whopping 22mpg. It needs a re-jet REAL BAD

If you punch the tank you can get about another 1/2 gallon in it. Which can make the difference in the wide open west.

Rod
 
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#1019362
RonK (User)
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Re:How FULL do you fill your tank & what kind of MPG? 1 Week, 6 Days ago  
Agpilot wrote:
[b]

Ronk I have got up to 58 in Co. riding hard. but here at home at 2100 feet I get a consistent 40 to 45 in normal riding. You altitude is why your mileage is much better than some of the guys who are commenting, who as I see are down close to sea level... It makes a lot of difference with a constant velocity carb.
--




--

You're probably right. Plus my main jet, as it turns out, is probably the best setting possible for the range I ride in, usually 4,000-7,000'. Then include the gearing difference with the slightly larger diameter tires changes my gearing ratio, the dual exhaust, and the opened up air filters.

--
 
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#1019364
MidnightRide (User)
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Re:How FULL do you fill your tank & what kind of MPG? 1 Week, 6 Days ago  
HotRodStar wrote:
I recorded mileage digitally at every fuel stop for close to 20K miles on my 02. Very consistent 38 MPG over the course of those miles. Seen a few putt putt rides into the mid 40's saw a low of about 27 flogging on it across the AZ desert to stay ahead of a winter storm.
With my 06, just after I got it, I actually ran out of gas pulling into the station. It took 5.3 gals to the bottom of the neck. My 06 is still factory jetted. Flogging it across the desert recently at 85 to 90 it got a whopping 22mpg. It needs a re-jet REAL BAD

If you punch the tank you can get about another 1/2 gallon in it. Which can make the difference in the wide open west.

Rod


That's great info. So the 5.3 is to the bottom of the filler neck. Now I'm really tempted to see how low I can run that tank before running it around the corner for gas.

Definitely going to punch a hole in that neck too to see if I can generate any high fuel overflow issues. But keep in mind that I only fuel up when I'm heading out on a ride, not before pulling into the garage, so nothing has any time to sit and vaporize or swell in the sun.

Then again I'm wondering if Yamaha set that neck level to prevent fuel overflow when leaning during cornering out on the road. Seems like it wouldn't matter but if that's a problem and fuel is running out the vent tube on the road I'd have no way of knowing I was dumping it out.

Might have a point there.

OK so I'm going to bite on the high altitude thing. High altitude means two things, thinner air for lower wind resistance when riding, and thinner air which would force a RICHER fuel mix overall. If the bike's not getting any air but the fuel is still flowing then wouldn't that cause a richer mix and lead to WORSE fuel mileage?

If the thin air was a solution then it would make sense to just open our jets up at lower altitudes to replicate the same results.

Someone fill me in here. When I was racing motocross at altitude at Mammoth Mountain at 8000+ feet, we had to jet way down to get the bikes to work, not the opposite.

So is it the lower air resistance that makes the mileage difference on the road?
 
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Last Edit: 2017/08/09 00:21 By MidnightRide.
 
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