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#1
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pairing two bikes to row?
Hollo,
I am planning to attach two bikes in parallel to mount a rowing mechanism in the middle, I think it will be more realistic that a "standard" row bike; for instance I will be able to turn by padding an oar faster than the other. In principle the device is simple, one string to pull, another to recover, just tying them to the two pedals. But I would like to know about similar machines, to get better ideas. Any pointers? Alejandro Rivero PS: if it works, I will use lateral wheels to center the device in an abandoned railway. |
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#2
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pairing two bikes to row?
Does the abandoned railway still have its tracks? You could build some
sort of rowing locomotive. You could even have carriages with passengers. That would be cool. A PS I volunteer myself as conductor and/or signalman. wrote: Hollo, I am planning to attach two bikes in parallel to mount a rowing mechanism in the middle, I think it will be more realistic that a "standard" row bike; for instance I will be able to turn by padding an oar faster than the other. In principle the device is simple, one string to pull, another to recover, just tying them to the two pedals. But I would like to know about similar machines, to get better ideas. Any pointers? Alejandro Rivero PS: if it works, I will use lateral wheels to center the device in an abandoned railway. |
#3
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pairing two bikes to row?
Alistair Potts wrote: Does the abandoned railway still have its tracks? You could build some sort of rowing locomotive. You could even have carriages with passengers. That would be cool. Hi Allistar, Yep, most of Spanish abandoned railroad has been removed (using biking as an excuse for private interests, but that is another history) but fortunately there are there extant railways in Castilla, all the three over 100 miles. I could even to combine bike and electric bike -with a dynamo to load battery- in order to keep speed while resting. The only problem is to keep the bike wheels in the track. An standard train uses conical wheels, that works because of the weight of the train, but it could not work with a light vehicle. |
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pairing two bikes to row?
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#5
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pairing two bikes to row?
"Douglas MacFarlane" wrote: (clip) The different effective diameters of the wheels would tend to centre the train between the tracks with a fixed axle system at least. ^^^^^^^^^^^^^^ As the train rounds a curve, it tends toward the outside, placing the smaller diameter part of the wheel in contact on the inside of the curve, and the larger diameter on the outside. This acts as a "differential," to let the wheels roll without slipping. |
#7
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pairing two bikes to row?
Seriously, it would be great to do it on the track. Because then you'd
have something really unique. Maybe you could find one of those bogies that are manually-powered with a sort of see-saw device. That would be a good start. Leo Lichtman wrote: "Douglas MacFarlane" wrote: (clip) The different effective diameters of the wheels would tend to centre the train between the tracks with a fixed axle system at least. ^^^^^^^^^^^^^^ As the train rounds a curve, it tends toward the outside, placing the smaller diameter part of the wheel in contact on the inside of the curve, and the larger diameter on the outside. This acts as a "differential," to let the wheels roll without slipping. |
#8
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pairing two bikes to row?
Alistair Potts ha escrito: Seriously, it would be great to do it on the track. Because then you'd have something really unique. Maybe you could find one of those bogies that are manually-powered with a sort of see-saw device. That would be a good start. Actually, you can do a see-saw bogie by attaching an axis... to the pedals between both bikes! Very simple. Then you attach a vertical bar to this axis, and ready to pump. Alejandro |
#9
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pairing two bikes to row?
In article .com,
wrote: Hollo, I am planning to attach two bikes in parallel to mount a rowing mechanism in the middle, I think it will be more realistic that a "standard" row bike; for instance I will be able to turn by padding an oar faster than the other. In principle the device is simple, one string to pull, another to recover, just tying them to the two pedals. But I would like to know about similar machines, to get better ideas. Any pointers? Alejandro Rivero PS: if it works, I will use lateral wheels to center the device in an abandoned railway. maybe you could get some ideas from the Sun Quadribent http://www.beststuff.com/images/articles/072205a7.jpg |
#10
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pairing two bikes to row?
Suggest you take a look at www.wekapassrailway.co.nz/jiggers.htm.
Scroll down to 3 wheel Hand Operated Velocipede. This is the way the railways of old did it. The fettler powered it used a vertical lever actuating around the centre onto a crank. The crank drove through a gear onto the axle. The arms and legs are used. A bit like rowing but the arms pulled and the legs pushed at the same time. In some old Western movies (Blazing Saddles) you might see the pump action trolley which was "rowed" standing up using arms and backs largely. To clear up some misconceptions, tapered wheels are used on trains to centralise the wheel /axle set between the rails to reduce flange wear, weight is not a factor. In turns, yes, the flanges scrub, this is the bane of railway bogie designers. It is entirely possible to build what you are after out of bike parts plus a lot of ingenuity, Good Luck. |
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