• Rack doesn't fit (and look nice) on most of our bikes (race, MTB), so were excluded.
    Besides that, I got my Giant for free from my boss (Giant), so any other type was not considered.

    Gears: you're right. In the beginning, those kids have no clue, but after a while you can tell them to switch to "2" or to "5" e.g.
    I experienced both SS and geared. Problem with SS is that most of the times, the kid is riding a wrong gear. Mostly too big, so pedalling is almost no option.
    I select the gears myself or (if the kid co-operates) tell what gear to select. Works fine with Shimano Revo shift: cheap, light action, works well. Better than SRAM MRX, which is more or less standard on every kid bike.
    Offroad we ride low gears. No need to push at higher speed, but kid can really help in snad, uphill and in forrest.
    On road a higher gear, of course.
    If you go for SS, I recommend to look into the gearing. You may try a few and end up with a lower gear.

    **Finally: didn't Hilary offer a really fantasic one a couple of times, UK hand made?
    **Was a great bike.
    Check with Hilary, he may still have it and as far as I remember, the price was very, very reasonable. After a couple of years, you can re-sell for the same amount.

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