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    New to this forum - Programming a Bafang 1000W mid drive - Throttle programming

    HI everyone. So I just finished a build putting a 1000w bafang mid drive kit on my Giant Trance mountain bike. I am looking for a few suggestions on the programming.
    Just some quick background. This is on a full suspension mountain bike. I will be riding road, offroad trails, single track and paved trails. I am by no means an extreme rider.

    1. Level 1 assist is a little to aggressive, Seems a little fast. This seems pretty straight forward, just keep dropping the current limit and speed limit until I find a pace I like. ANy suggestions on a good setting would be appreciated. They started at Current limit 50, Speed limit 44

    2. I feel like in all the assist levels when the motor kicks in it is a pretty aggressive. I feel like I can feel the back of the bike torqueing to the right. I would like to smooth this out but everything I read about changing the Start current or slow start mode settings is you have to be careful with these 2. Mine is currently set at Start Assist - 50%, slow start mode 8. Any suggesting on some safe but softer setting here?

    3. What are your thoughts on the throttle. Currently at level 0 I have no throttle. And the "Designated Assist Level' is set at 'By Displays Command" It would make a lot of sense to me to have full throttle all the time. For sure if I am in assist level 0. Any down sides to this? What is the best way to set this up?

    Thanks for any advice.

    #2
    Have you tried changing your PAS steps from the default 5 to 9. You can do that on most of the displays on the advanced screens usually where the wheel size is also set. Many of us didn't really like the way the systems worked and were thinking of digging into the deeper programming but then found that with the 9 steps it was fine. It doesn't change the min or max just gives you finer steps.

    Nothing wrong with getting into the programming but I would try riding more on the default settings just to get a feel for it and what you want to change.

    Comment


    • goingup4m
      goingup4m commented
      Editing a comment
      I will definitely give that a try, but not sure that will solve what I am experiencing. As I understand it, when you set the PAS to 5 instead of 9 isn't the programming just using what you have programmed in for 1,3,5,7,9?
      So Level 2 on PAS set to 5 is the same as Level 3 with the PAS set to 9

    #3
    Hello!

    I have the same question as above...

    Since the programming screen will show all 9 levels...if you are trying to tone down level 1 to 5 ( 5 Assist) how does that relate to the 9 that are shown?
    Is programming 1 3 5 7 9 levels translate to a 5 level setup?
    or...if you decide on just 3 levels...1 5 9 for the level power changes?

    Thanks!
    Greg

    Comment


      #4
      Greg - you are exactly right. If you set up as 5 level it is 1,3,5,7,9. I have tried both 5 and 9 and like the 5 level setup.

      Going thru the programming really made a world of difference on how my bike performs. I am much happier now being able to dial in the amount of assist and how hard it comes on.

      Comment


        #5
        Thank you!!

        I figured as much but I just wanted to verify. Time to start tweaking the power levels!

        Greg

        Comment


          #6
          Originally posted by goingup4m View Post
          HI everyone. So I just finished a build putting a 1000w bafang mid drive kit on my Giant Trance mountain bike. I am looking for a few suggestions on the programming.
          Just some quick background. This is on a full suspension mountain bike. I will be riding road, offroad trails, single track and paved trails. I am by no means an extreme rider.

          1. Level 1 assist is a little to aggressive, Seems a little fast. This seems pretty straight forward, just keep dropping the current limit and speed limit until I find a pace I like. ANy suggestions on a good setting would be appreciated. They started at Current limit 50, Speed limit 44

          2. I feel like in all the assist levels when the motor kicks in it is a pretty aggressive. I feel like I can feel the back of the bike torqueing to the right. I would like to smooth this out but everything I read about changing the Start current or slow start mode settings is you have to be careful with these 2. Mine is currently set at Start Assist - 50%, slow start mode 8. Any suggesting on some safe but softer setting here?

          3. What are your thoughts on the throttle. Currently at level 0 I have no throttle. And the "Designated Assist Level' is set at 'By Displays Command" It would make a lot of sense to me to have full throttle all the time. For sure if I am in assist level 0. Any down sides to this? What is the best way to set this up?

          Thanks for any advice.

          IMO 50% is crazy high current (power) for assist 1... e.g. mine is set to 6%

          Another thing I've found is that most "factory" settings go with a linear ramp up on current (power) - i.e. each step is roughly the same amount... to me a geometric ramp is much more sensible - i.e. each step multiplies by the same amount instead of adding.

          My current (power) settings:

          Click image for larger version  Name:	PASlevels.png Views:	0 Size:	13.1 KB ID:	123298

          Each step is roughly 142% of the last step and every two steps roughly double the power

          Most of my riding is in levels 2-4. If headwinds or hills maybe 5. I use 6-8 when I'm going really fast on a larger battery. I almost never use 9 but it's there and I use 1 when starting off and if riding with folks on non-electric (I also use 0 when with folks without assist) or just in mellow mode/mood - range is unreal if left in PAS 1 and even 2 is pretty amazing

          I set the speed to 100% across the board


          For the throttle I set the designated assist level to 9 (100% power and speed) and the mode to "current" ("speed" mode really sucks IMO) but I set the start current to 1% which gives exceptionally gentle startup, even in my lowest gears which are very low, and the throttle response is very smooth and predictable across the entire range


          I have a spreadsheet calculator that will compute the levels based on a geometric progression - the table is from that... green are the entries and yellow the output for the programming tool... I've shared it plenty and just ask if you'd like it...

          Comment


            #7
            I have found the guides invaluable. I have programmed my BBSHD to perfection by reading through the guides carefully, trying to understand the details and doing a bit of experimenting. Here are the guides:

            https://electricbike-blog.com/2015/0...ing-the-bbs02/

            https://penoff.me/2016/01/13/e-bike-...sion-software/

            https://edrivenet.com/bafang-programming/

            Have fun!

            Comment

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