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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?
 

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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.
 

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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 9°f or 10°f (around -12°c) Couldn't really base my mileage on that short run in those cold temperatures.

Rode to work this morning. it was +4°c 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
 

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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
 
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