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    1,28 and 3,91

    http://www.gear-calculator.com
    Last edited by Cezar; 2 weeks ago.

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      I've got a spreadsheet gear calculator and it seems like you have some very low gearing if I'm reading your numbers right (46t ring, 19t rear, 1.28 in the highest gear)

      Seems like 160rpm would only get you about 40kph

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        According to the gear ratio calculator from the website www.gear-calculator.com - (I'm sending a screenshot) with these gears 46/19 and at the fastest gear 3,91 and for 40 km / h the cadence should be 76 rpm. (1.28 is the ratio uphill)
        For me, however, it was about linking the programming of the controller in the Basic part - that is "Speed limit" with entering different speeds on the display (eg C-18), eg 99km / h or eg 60km / h? Does anything change for the user?

        Click image for larger version  Name:	Zrzut ekranu 2020-11-12 o 10.14.14.png Views:	0 Size:	554.1 KB ID:	117596
        Last edited by Cezar; 2 weeks ago.

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          Ahhhh - it appears the ratios in your calculator are not the actual IGH ratios - they appear to be the overall driveline ratio

          Changing the limit in the display from 60kph to 99kph in the display likely makes no difference based on your settings - my best understanding is that the controller doesn't "recognize" anything more than 60kph from the display with your controller settings

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            This is how the natural Alfine 8 gear ratios look like, corrected for the gear ratios resulting from the teeth at the front 46 and 19 at the rear.

            Everything is in line with what I gave you earlier.

            Coming back to the topic - when then entering the speed in the display has any influence on the behavior of the engine ...



            1. 0,527 x 46/19 = 1,29
            2 . 0,644 x 2,42 = 1,56
            3. 0,748 x 2,42 = 1,81
            4. 0,851 x 2,42 = 2,06
            5. 1,000 x 2,42 = 2,42
            6. 1,223 x 2,42 = 2,96
            7. 1,419 x 2,42 = 3,43
            8. 1,615 x 2,42 = 3,91

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            • AZguy
              AZguy commented
              Editing a comment
              Like mentioned - Changing the limit in the display from 60kph to 99kph in the display likely makes no difference based on your settings - my best understanding is that the controller doesn't "recognize" anything more than 60kph from the display with your controller settings

            thx AZguy

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