270 mile trip with mountain bikes and speed

• Reference: Last 5,500 miles
  • Average Speed: 30mph
  • Average consumption: 30 kWh/100 miles
• Destination
  • Milage: 122.3
  • Drive time: 2:33 h
  • Charge: 100%-41%
  • Average speed: 50mph
  • Average consumption: 41.3 kWh/100 miles
• Charger stop
  • Milage: +58
  • Drive time: 1:10h
  • Charge: 41%-9%-83%
  • Average speed: 52mph
  • Average consumption: 43.7 kWh/100 miles
  • Guess-o-meter expected charge at destination: 42%
• Destination stop
  • Milage: +89
  • Drive time: 1:17
  • Charge: 83%-29%
  • Average speed: 70
  • Average consumption: 50.1 kWh/100 miles

jrmuppet said:

Today I took my son to Thunder Mountain downhill mountain bike part in Western Massachusetts. I have taken my bike on the car locally but never on a longish distance. I know some folks on here like to understand the efficiency of trips so I tracked stats along the way.

We started from a Boston suburb and I took it fairly conservatively on the way to the mountain. Never too aggressive. While on the way home I drove it like a Porsche.

One thing to note, we could barely hear the noise of the bike with in the car. I do have insulated glass option. There is a speed where you do start to hear it but that was likely too fast anyway and good reminder to lift off the pedal a little.

Here are the stats

• Reference: Last 5,500 miles
  • Average Speed: 30mph
  • Average consumption: 30 kWh/100 miles
• Destination
  • Milage: 122.3
  • Drive time: 2:33 h
  • Charge: 100%-41%
  • Average speed: 50mph
  • Average consumption: 41.3 kWh/100 miles
• Charger stop
  • Milage: +58
  • Drive time: 1:10h
  • Charge: 41%-9%-83%
  • Average speed: 52mph
  • Average consumption: 43.7 kWh/100 miles
  • Guess-o-meter expected charge at destination: 42%
• Destination stop
  • Milage: +89
  • Drive time: 1:17
  • Charge: 83%-29%
  • Average speed: 70
  • Average consumption: 50.1 kWh/100 miles

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ciaranob said:

Thx for sharing - the issue I guess is that it would be better to have a ref case of a similar long distance trip with similar high rates of average speed without the bikes to properly compare (and similar terrain, weather etc)
The prob with your ref case being of course that it likely includes all sorts of short trips at much lower average speeds etc so it is hard to determine what proportion of the extra consumption you are seeing on the bike-attached trip is drag due to the bikes vs the higher average speeds on this trip compared to the ref case - above all else high speed is a consumption killer!

Interesting nonetheless and again appreciate you sharing with us.

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jrmuppet said:

Yes, agreed on the comparison issues. I included it more as a reflection of my longer term consumption. All types of driving in there. Running around town, spirited highway, and everything in between. The 5k just happened to be the length of my trip counter. For a trip like this without bikes I suspect my consumption would be mid to high 30s kWh/100mi, maybe even higher. So the bikes made a difference especially at higher speeds.

Another interesting tidbit is that the guess-o-meter said I’d have 44% charge when I got to the mountain. I had 41%. After charging, it said I’d have 42% and I arrived with 28%. Armed with this experience I now have a good feel for impact on range with the bikes (with and without speed). It is not bad to be honest. If I want to optimize for range I could. I have just found that I rarely every have to, which is awesome In my book.

I have the car 18 months with 15k miles on it. I rarely think about range. On really long trips I tend to plan them out so I can choose charging near good food options but for trips like this I just charge to 100% overnight and let the car decide everything. It is a really great car and the charge planner software has been amazing.

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Englishtony2002 said:

Some stats from my Turbo that regularly does 73-75mph motorway journeys, so this consumption is at an average speed of 55mph.

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jrmuppet said:

Nice, is that TRONITY you are using? I find it more interesting than useful. My trip locations are all messed up though. Porsche either send the wrong Lat/Lng or TRONITY it reading it wrong. Has you location data been accurate?

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