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-   -   Big drop in gas mileage (https://www.stromtrooper.com/dl1000a-2014-2016/310898-big-drop-gas-mileage.html)

Midwinter 02-20-2016 08:37 AM

Big drop in gas mileage
 
My bike came back from the recall the other week. I am driving it for the first time on the highway at 70mph. The bike would get 47mpg at this speed in 6th.

Now I am getting 37mpg. The only drag on the bike are hippohands. Any ideas what is going on?

Hard miles 02-20-2016 09:48 AM

Quote:

Originally Posted by Midwinter (Post 3783658)
My bike came back from the recall the other week. I am driving it for the first time on the highway at 70mph. The bike would get 47mpg at this speed in 6th.

Now I am getting 37mpg. The only drag on the bike are hippohands. Any ideas what is going on?

Head winds?

Brian

Solo Moto 02-20-2016 10:28 AM

Midwinter Blend Gasoline
 

mcrag 02-20-2016 10:38 AM

if you're running the Hippo hands without handguards, then the wind force against them could be pushing on the front brake lever enough to activate the brake somewhat. This is a known issue with some bar mitts.

V-Tom 02-20-2016 10:42 AM

High airspeed (Bike speed + headwind speed) and cold temperatures affect mileage.

I picked up my DL1000 from my dealer Thursday eve. I only had a 20 km/12 mile ride home.. temperature was 9f or 10f (around -12c) Couldn't really base my mileage on that short run in those cold temperatures.

Rode to work this morning. it was +4c or about 39f. Headwind of about 20 mpg. I went a bit faster than normal on the highway (130 to 140 kph or 80 to 90 mph) and I got poor mileage. No surprise there!

My tire pressures are fine.. they are over-inflated a bit since I was expecting to ride in colder temps.


I'll have to check over the next few days when I (hopefully!) get into more normal riding.

..Tom

OydnaR 02-20-2016 07:09 PM

Quote:

Originally Posted by V-Tom (Post 3783794)
cold temperatures affect mileage.

yep, fuel air ratio, denser air requires more fuel, one of reasons I always say cold air = free horsepower

but I guess not free if you consider the additional fuel consumption

there are other reasons that fuel economy drops in cold weather as well, but that is the big one



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V-Tom 02-20-2016 08:40 PM

Quote:

Originally Posted by randyo (Post 3784522)
yep, fuel air ratio, denser air requires more fuel, one of reasons I always say cold air = free horsepower

but I guess not free if you consider the additional fuel consumption

there are other reasons that fuel economy drops in cold weather as well, but that is the big one

I think also the lack of an intake pre-heater means that the fuel doesn't vapourize as well and as a result the injection has to run richer than it would I warmer weather.

..Tom

Gobius 02-21-2016 11:05 PM

Check your tire pressure.


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