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  1. EbikeTestLab

    Tire pressure, rolling resistance, battery range

    Good observation! I tested the road load vs. tire pressure and then calculated how that would affect range. Here's the post: https://electricbikereview.com/forums/threads/range-vs-tire-pressure.28759/#post-205384 Tire pressure definitely affects range and might affect top speed if the bike...
  2. EbikeTestLab

    Know Your Average Stopping Distance?

    I'll try to go out on my Cannondale gravel bike when the weather cooperates and see how quickly I can stop with a regular bike (still has hydraulic disc brakes though). That would be an interesting data point. My hunch is that it's no quicker to stop from 20 mph than the ebikes I've tested.
  3. EbikeTestLab

    Know Your Average Stopping Distance?

    I've only tested four bikes (more coming in the Spring hopefully) but they all differ in how quickly they stop and the most effective method for emergency braking. And yes, it will vary be rider so one should practice on their bike to know how to stop quickly. You can read about how I do the...
  4. EbikeTestLab

    Ebike Comparison Testing and Review

    Opimax, I do like the idea of comparing a Juiced CCX to a Stromer or one of the other high end bikes. The differences may really show up as mileage accumulates. Thanks!
  5. EbikeTestLab

    Ebike Comparison Testing and Review

    Timpo: Thanks for the suggestions, I'll keep those in mind once I start doing videos. I seek the type of review that I wanted when I purchased my Metro+, a straight comparison of the performance and range from an independent source of several ebikes of the same type. That's the type of review...
  6. EbikeTestLab

    Ebike Comparison Testing and Review

    Howdy folks, I'm thinking of doing something a little different with my ebike testing. I'd like to purchase three or four ebikes of the same type, and then review, test, and compare them much like Car and Driver or other magazines do. The testing would include acceleration, braking, range, and...
  7. EbikeTestLab

    Revolve Rough Rider - EBTL Test Report

    EBTL Electric Bike Test Lab Test Report of: Revolve Rough Rider Tested in October of 2019 by Jason Holmes (Chief Engineer and Owner) Summary The Rough Rider excelled at braking and managed the one mile long hill climb extremely well. The large wheels, heavy weight, and long wheel base...
  8. EbikeTestLab

    Ancheer Mountain Bike Performance, Range, and Hill Test (Ancheer Model AN-EB001)

    The Strava data is coming from a Garmin 530. I did ride up the same hill this morning with the 20 Hz VBox unit but the elevation data isn't great due to the trees that cover the road and reduce the number of satellites that the VBox is pulling from. I'll try it again in a few months once the...
  9. EbikeTestLab

    Ancheer Mountain Bike Performance, Range, and Hill Test (Ancheer Model AN-EB001)

    Map My Ride was suggested earlier so I just mapped out the route there, it just seems to show the average grade:
  10. EbikeTestLab

    Ancheer Mountain Bike Performance, Range, and Hill Test (Ancheer Model AN-EB001)

    I just looked at the app and it doesn't have grade%. So, I logged into through my laptop and I only see a chart that shows the grade percent where the cursor is located. Now, I don't have Summit, perhaps that's the issue. If so, I'll just pay for summit so I have this information in the...
  11. EbikeTestLab

    Ancheer Mountain Bike Performance, Range, and Hill Test (Ancheer Model AN-EB001)

    I was able to pull the elevation and speed data from Strava, so this comes from the Garmin 530. Files attached.
  12. EbikeTestLab

    Ancheer Mountain Bike Performance, Range, and Hill Test (Ancheer Model AN-EB001)

    Unfortunately, I can’t get the grade to come up with my phone and I’ll be without internet and WiFi for the next 8 days (camping in upstate NY). I can look it up when I get back. In the meantime, if someone wants to look it up: the hill climb starts at the American Legion on Ice Pond Road in...
  13. EbikeTestLab

    Ancheer Mountain Bike Performance, Range, and Hill Test (Ancheer Model AN-EB001)

    Correct, the Faraday does not have a throttle. Two different riders completed the test at different times, myself at 200 lbs and my daughter at 130 lbs, both weights include instrumentation. It climbed it both times using an average human input of 100 watts or so. The Ancheer did not reach the...
  14. EbikeTestLab

    Ancheer Mountain Bike Performance, Range, and Hill Test (Ancheer Model AN-EB001)

    Court sent me an Ancheer Ebike for testing that Mikey had reviewed prior, thanks Court and Mikey! Not surprisingly, it failed during testing... Here's the data, with a failure summary toward the end: Electric Bike Test Lab Test Report of: Ancheer Mountain Bike (Model AN-EB001) Tested in...
  15. EbikeTestLab

    Performance and Range Test of Faraday Cortland Electric Bike

    Thanks! We do have a few more tests planned for it. My daughter has been riding it all summer to commute to her camp counselor job and has been loving it. I’m glad our testing helped!
  16. EbikeTestLab

    Range vs. Tire Pressure

    I sort of agree but it can only get to zero. If changing the tire pressure only affects rolling resistance, then only the “B” term of the three term equation that defines road load would be changing (A+B time speed + C times speed squares). By changing only the b term at a given speed, the...
  17. EbikeTestLab

    Range vs. Tire Pressure

    I’m not directly measuring rolling resistance. The road load test measures how much power is necessary to keep the ebike and rider at a steady speed, in this case it was 20 mph. However, by varying the tire pressure, the rolling resistance should be the only change. In essence, I have determined...
  18. EbikeTestLab

    Range vs. Tire Pressure

    Absolutely! I’m usually in a hurry though! The chart attached is from my full test of the Magnum Metro+: It shows the non linear increase in power needed as speed increases. Just like with cars, the aerodynamic drag increases with the square of speed.
  19. EbikeTestLab

    Range vs. Tire Pressure

    Good points! The test rider plus instrumentation weigh 200 lbs, I adjust this weight with by adding water bottles to a pack pack so it’s right at 200 lbs every time. The bike weighs 59 lbs. The test surface is smooth asphalt. The tires are Schwalbe Marathons 700x38c. The bike and tires have...
  20. EbikeTestLab

    Range vs. Tire Pressure

    Good Morning EBR folks! I wanted to test the accuracy and repeatability of my road load testing and have some fun with tire pressures. Therefore, I setup my Magnum Metro+ just like the last test, but I aired up the tires to 90 psi and ran the 20 mile per hour road load measurement test. I...