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80 results found
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displaying 46-48 |
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| Bicycle Frame Lock 
Based on the idea of the "detachable faceplate" for car stereos, this bicycle frame lock about 2 1/2 inches long, is actually a small but critical part of the bike's frame. It has a 5-number combination lock. Without it securely fastened, the bike frame essentially has a "hole" in it and will collapse when someone sits on it.Made of steel or titanium, this tubular lock is highly portable and can be taken anywhere. In combination with a strong, standard bike lock, it will thwart any thinking thief. What good is a bike with piece of the frame missing?
There is 1 reply to this idea
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| Motorised Skateboard
Motorised skate boards have been around for a while. Basically they are snowboard sized skateboards with 40ish cc engines on the back of them, usually chain or belt driven the back wheels. This is fine, but these monsters can't really be used on or at a skate park. Because of the size and the weight of them, it is impossible to do tricks with them.What i am thinking about is a motor that is attached to the back of an ordinary skateboard, but it is detachable. So once you get to the pack, you simply undo the fasteners and pull it off.You want to be able to attach the device to any skateboard, so a means of propulsion needs to be thought of that doesn't include the skateboards wheels (jet propulsion isn't really an option either).A swing arm out the back of the skateboard would probably do the trick. The swing arm would have a single rubber wheel on it and be spring loaded so that it is always in contact with the ground. The wheel could be belt, chain or shaft driven.And the engine could be either electic or petrol (chainsaw for prototype). Electric posses the problem of batteries and petrol posses the problem of weight.I started to make a prototpe of this (many moons ago, when i was about 14) but the centrivical clutch broke on the engine and i never got round to finishing the project.any improvements anyone?Reward: once in production..... a discount 
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