Range Testing Is Nearly Done

With the Heinzmann Direct Drive 500 watt hub motor using my own parameters for the programmed controller & a 1/2 kw hour battery on a bike weighing 60# including motor & battery along with a 200# rider in slightly better than average condition for a total of 118 Kg:

Minimal assist is about 166 watts of assistance & using mostly that I was able to ride more than 40 miles over varried terrain & over 50 miles of slight mostly uphill, my legs gave out before the bike & battery.

Medium assistance is a little more than 1/2 the power of the motor & with some regeneration on the downhills I found I can get about 30 miles out of the battery using mostly medium assist & some regeneration.

I expect that tomorrow I will get 20 miles using maximum assistance & little to no regeneration.

The next big test is up & down a mountain that is generally more than a 12% grade. The procyclist record is climbing it in less than 40 minutes but, no one has done the 6.6 miles in under 30, even in my car driving it every day for work I don't think I ever made the bottom to the top in under 20 minutes.

The ride totals for today include:

2.18 Kw generated by me to the 500 w provided by the motor

30.5 miles at an average of nearly 18 mph & top speed of 31

The ride took 1:42:49

I believe my total regeneration into the battery may have equaled 1/6 the battery.

Sometime this Autumn I hope to make 100 miles on flat land at the beach... we shall see, I will be in far better condition by then & another 15# lighter with as much weight as I can stripped off the bike.

To leave a comment, please sign in with
or or

Comments (17)

  1. noahbody

    Interesting specs. But that’s not even a full day’s ride. So when you go on your trip you can expect motor assist for maybe 40 miles before you need a recharge.

    July 31, 2016
    1. Munkyman

      I am praying for better batteries by then & I am building a lighter frame. I will also carry a spare battery & I’m looking at solar sails to use for shade while I take a siesta & recharge. My goal is 200 miles a day, I don’t know if my legs will be able to keep that up even in great shape & with reasonable assistance.

      August 01, 2016
      1. noahbody

        That sounds cool. You have big plans.

        August 01, 2016
    2. Munkyman

      Right now it’s about being able to give realistic estimates to prospective buyers as I ready my KickStarter.

      August 01, 2016
      1. noahbody

        Aha. I see. I did not know you were planning on selling them.

        August 01, 2016
        1. Munkyman

          I wasn’t sure about it until I began testing it out. I’m still not sure but, I’m real hopeful.

          August 01, 2016
          1. noahbody

            good luck

            August 01, 2016
  2. TomasSISI

    Way to go. I’ve been meaning to ask you how the bike was testing out..

    August 01, 2016
    1. Munkyman

      It’s testing well, I want to ride against what is arguably the best “production” eBike from a major manufacturer, I think I can go both faster & farther. I begin the ugly phase of production now, negotiating purchasing contracts, getting legal & insured, getting legal advice about the liabilities related to the speeds it can attain. I’ve got a real good friend who’s a real good lawyer, I will try to prevail upon her for any favor she might have ever owed me. By the end of August I should have my KickStarter up. It’s looking like the bike will be somewhere near 50% American made, 30% German & the rest Pac Rim.

      August 01, 2016
  3. RRoe

    Cool. I’m interested in hearing about your progress.

    August 01, 2016
    1. Munkyman

      Thanks

      August 01, 2016
  4. chalmers

    This is really useful information for the bikes riders I think and you can get it by buy a research paper.The biles are really very popular among the young generation I think.This detail is really very good and useful for the look after of the bikes.Thanks for sharing this.

    December 08, 2016
  5. Munkyman

    It’s about 15 pounds with housing & controller… wire harness, it’s 3rd or 4th generation Lithium technology. There’s a Scandinavian woman they call the Queen of Batteries who has recently come up with a cleaner LiFePo battery that’s supposedly going to have about twice the energy density.

    August 01, 2016
    1. Munkyman

      Last move in the tech that I have read about, before her & what she’s doing I do not know, was using a co2 molecule in the polymer to greatly reduce volatility & increase capacity.

      August 01, 2016
  6. Munkyman

    I’d guess just the cells minus the battery management system & the rest weigh about 10#.

    August 01, 2016