Recent content by CoachMark

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    Discussing the Option and Ideas to safer cycling.

    It seems to me that a large number of e-bike users see them as a way of reducing their commute time by going faster than they could under their own power potentially adding to their risk of injury.
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    8fun crank drive kit

    It does in terms of changing gear, but I'm still unclear as to how exactly it knows when the stop providing power, i.e. when the bike reaches 15mph.
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    8fun crank drive kit

    Thanks to both shemozzle999 and GeeBee for the last two posts. I normally aim for a 80 rpm cadence so that should suit the motor perfectly for the flatter bits. I hope that most of the time I'll be able to pedal without assist; just need it for the times when I'm struggling to keep up with my...
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    8fun crank drive kit

    How does it know the speed of the bike then - Does it simply limit it's rpm based on the assumption that the hardest gearing will be 46:11? If that was the case, apart from re-restricting the motor, could you increase the bike's speed by fitting a larger chain ring?
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    Is It Safer Riding an Electric Bike?

    Yes I have trex. I was just saying that you don't need hydraulic brakes for speeds over 12mph. I totally accept that hydraulic disc brakes are the most powerful and much better than mechanical discs. However, personally I would sooner have v brakes than mechanical discs. At the end of the...
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    Is It Safer Riding an Electric Bike?

    I don't see why. Surely it depends on rider + bike weight? I used to ride road bikes at over 20mph and with a combined weight of nearly 100Kg didn't need hydraulic brakes.
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    8fun crank drive kit

    By the way I meant to ask what happens if the speed sensor on the wheel came off; does the motor stop?
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    New 70 volt kit

    I'm thinking of going down the crank drive route - I don't see anything on your website for this configuration and wondered if you had any plans for future kits?
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    Not Electric but 2.7kg..

    Is there a record for the lightest eBike?
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    I read about this airbag helmet thing. What do you think?

    I remember when I worked on car airbags in the 90s we had to spend a lot of time on the 'fire'/'no-fire' threshold to balance the risk of injury when it didn't go off against the cost of replacing the air-bags when they did. This was all in the context of being a secondary safety system (seat...
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    1st E-Bike advice

    Just looked on your website for the Eiger but couldn't see it?
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    Battery "fuel gauge" query

    If batteries weren't so heavy or expensive you could carry a spare - would it be possible to carry a smaller 'reserve' like a 2.5aH that are fitted into saddle bags?
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    8fun crank drive kit

    Thanks again for your helpful advice. I've exchanged a few emails with Cyclezee before I joined the forum so know about his demo bike but it is just so far away. I think I've found another up in the north-west but that isn't such a good comparator to my bike (its a cargo bike).
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    8fun crank drive kit

    I've tried the power calc software and if I used it correctly says that I'd need to put in c300W at the pedals to climb a 10% gradient at 6mph; I don't know how much power I could comfortably apply myself though, although I would have thought that it would be at least 50W. Whilst useful these...
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    8fun crank drive kit

    Thanks Shemozzle999, I'll take a look at the power calculator thread this morning. In terms of cable runs I think I'll be OK since it's a cross bike and all the cables run on top of the top tube, and I'll be removing the front mech completely because of the single chain ring. The cable for the...