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Thread: Electric Road Bike

  1. #61
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    Electric bikes have left me completely uninterested. Most of you will be familiar with Noraly, she of the Itchy Boots, she's stuck at home due to COVID restricting travel. Here she spends a day on an electric bike and actually manages to make electric bikes make sense. There is discussion of battery usage but not top speed and most of the riding is at a genteel pace. Cool job the guy has got though.

    https://www.youtube.com/watch?v=CZKs0Uza-6c
    There is a grey blur, and a green blur. I try to stay on the grey one. - Joey Dunlop

  2. #62
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    14th June 2007 - 22:39
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    I put that on my watch list not 5 minutes ago.

    I'm really enjoying the whole new series, trials, moto x, flat tracking.. Well worth a look for itchy boots fans.

    Bacon topic.
    Manopausal.

  3. #63
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    15th February 2017 - 13:17
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    You should watch Long Way Up as well. Range anxiety on windy roads is real. Also, charging in really cold weather can be hit or miss. Although real cold weather riding is rare, so should not be a problem.

  4. #64
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    Quote Originally Posted by Navy Boy View Post
    ...
    I can't wait until an electric bike is affordable (Sub $25k) and gives you a reasonable range at open road speeds (200+KM I'm thinking). Here's hoping.
    There bikes we around $16k with a range of 200km.

  5. #65
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    Quote Originally Posted by RDJ View Post
    I'm curious why a belt drive is not a good choice from your perspective. I've had belt drives on 4 out of my last 6 bikes and they are easy to maintain, replace, and don't need oil etc. I demo'd a LiveWire last year in the US, 5 rides in an afternoon (as the HD traditionalists were not keen :-) ) and found it quiet, smooth, very fast and with the best lean angle ever.
    I don't see why you wouldn't use a direct drive hub motor. I don't see any point in adding the complexity of a belt or chain. It's an extra component that isn't needed.

  6. #66
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    Quote Originally Posted by p.dath View Post
    I don't see why you wouldn't use a direct drive hub motor. I don't see any point in adding the complexity of a belt or chain. It's an extra component that isn't needed.
    Concur. Or a Sbarro wheel.

    Doubt it would save any weight despite appearances.
    Manopausal.

  7. #67
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    Quote Originally Posted by p.dath View Post
    I don't see why you wouldn't use a direct drive hub motor. I don't see any point in adding the complexity of a belt or chain. It's an extra component that isn't needed.
    Sprung weight vs unsprung weight. Heavier rare wheel assembly will impact how the suspension has to be designed to handle unsprung weight. Also, the gyroscopic effect of heavier wheel assembly will impact handling characteristics negatively.

  8. #68
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    Quote Originally Posted by Jeeper View Post
    Sprung weight vs unsprung weight. Heavier rare wheel assembly will impact how the suspension has to be designed to handle unsprung weight. Also, the gyroscopic effect of heavier wheel assembly will impact handling characteristics negatively.
    Indeed, but if agility is not paramount it should be doable.

    FWIW, a GL1800 rear wheel and tyre is just shy of 16kgs.

    Thank you for sending me off down that rabbit hole.
    Manopausal.

  9. #69
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    16kg wheel assembly on a 350+ kg barge is still relatively light.

  10. #70
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    Quote Originally Posted by Jeeper View Post
    16kg wheel assembly on a 350+ kg barge is still relatively light.
    Yup, but it kind of fits in with the current limitations for electric bikes, weight and range. They go hand in hand.

    For commuting and cruising I see potential. Knee down shenanigans less so at the moment.
    Manopausal.

  11. #71
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    Quote Originally Posted by onearmedbandit View Post
    This 'lack of maintenance' aspect about electric vehicles is often trotted out...however aside from upgrades which are purely by choice the only maintenance I do on my bike is tyres, brake pads, chain/sprockets. Electric bikes still have these consumables. The only thing I'll concede is oil and filter every 5000km.
    Tyres yes. Brake pads (and discs) tend to last much longer because of regenerative braking. There really shouldn't be a need for a chain/sprocket/belt/shaft. A direct drive hub motor should be fine.

    So the maintenance drops mostly to tyres.

  12. #72
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    Battery cells don't last for ever, are heavy and are damn expensive to replace.

    Also costly and very dirty to manufacture/ recycle.

    Just saying.

  13. #73
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    Quote Originally Posted by p.dath View Post
    Tyres yes. Brake pads (and discs) tend to last much longer because of regenerative braking. There really shouldn't be a need for a chain/sprocket/belt/shaft. A direct drive hub motor should be fine.

    So the maintenance drops mostly to tyres.
    I'm mostly referring to motorcycles here, not sure if any of the current lot have regenerative braking or not. With regards to final drive, once again most bikes with a conventional layout (ie engine in the best place for cog etc) there will be a need for a final drive.

  14. #74
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    Quote Originally Posted by Bonez View Post
    Battery cells don't last for ever, are heavy and are damn expensive to replace.

    Also costly and very dirty to manufacture/ recycle.

    Just saying.
    lithium batteries are lighter than the box they come in. Expensive yes and environmentally dirty maybe, but recycleable
    it's not a bad thing till you throw a KLR into the mix.
    those cheap ass bitches can do anything with ductape.
    (PostalDave on ADVrider)

  15. #75
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    Quote Originally Posted by Jeeper View Post
    16kg wheel assembly on a 350+ kg barge is still relatively light.
    But more to it than that. The swingarm with shaft, final drive, wheel with disk, caliper and tyre of a GS1100G, on scales with the suspension units disconnected (so pretty much all the unsprung weight) is around 35 -38 Kgs. The rear end of a Gold Wing, Venture Royale, Concours or any of the big BMWs is going to be around the same. They all handle pretty well,
    it's not a bad thing till you throw a KLR into the mix.
    those cheap ass bitches can do anything with ductape.
    (PostalDave on ADVrider)

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