loading
2Comments

Tell us about yourself!

Complete Your Profile
  • adamd68 commented on Radioactive_Legos's instructable 48V Electric Flat Tracker2 months ago
    48V Electric Flat Tracker

    sexy wheels indeed. ? What kind of ranges are you getting?

    hey mate. I have had bikes between my legs since I could stand up. Still pedalling too. I also worked in the industry for many years. So I offer my two cents.Gears are definitely an attractive proposal, but I definitely feel that the derailleur method of achieving a selection of ratios would suffer with aggressive wear characteristics. On the chain and sprockets obviously. This will be due to the side loading of the chain as the chain moves between the different sprockets. (Ideally a chain should run dead straight from the driving to the driven cog. This is called the "chain-line") A modern 9 or 10 speed chain and cluster can wear out completely in a few 100kms of hard pedalling. Even with educated gear selection by the rider. I was renewing my chain every 3 months and rear ca...see more »hey mate. I have had bikes between my legs since I could stand up. Still pedalling too. I also worked in the industry for many years. So I offer my two cents.Gears are definitely an attractive proposal, but I definitely feel that the derailleur method of achieving a selection of ratios would suffer with aggressive wear characteristics. On the chain and sprockets obviously. This will be due to the side loading of the chain as the chain moves between the different sprockets. (Ideally a chain should run dead straight from the driving to the driven cog. This is called the "chain-line") A modern 9 or 10 speed chain and cluster can wear out completely in a few 100kms of hard pedalling. Even with educated gear selection by the rider. I was renewing my chain every 3 months and rear cassette each 6 months. Daily commute on a slick tyre hardcore hardtail MTB. Older style 6 gear cluster and chains last many times longer because the side loading is many times lower. Meaning tolerances in the drivetrain are very slack compared to the latest 10 gear setups.Another point to note is that the application of power by the rider during gear shifting needs to be modulated precisely. If your a well instructed or observant rider. You will ease off the pedal (slightly) during shifting down ratios. And increase going up. This aids shifting smoothness. If you choose a internal hub gear system. Sturmey Archer or Rohloff for example. The selected gear won't engage until the rider momentarily halts pedalling input. This can be done so fast it is almost un noticeable. Once your used to it. Anyways, that's food for thought. I am not saying that it wouldn't work. It will work But theses characteristics will definatly factor into the performance and reliability of such a system. If there are any derailleur e-bikes running, I'd love some stats. ☺️I would opt for a CVT drivetrain I reckon. Ride more everyone. ?

    View Instructable »