Naked Science Forum
Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: geo driver on 19/03/2010 14:52:52
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as a biker i like going really fast, however riding through town puts most of my weight on my wrists, the faster i go the more air pushing against me the less wrist strain i feel.
go too fast, and there is too much wind against me and my arms start hurting because im holding on for dear life.
how can i work out the perfect speed to go at, when there is the perfect equilibrium between the air cushion and my weight?
oh and im 85 kg and 6ft
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Q. how to take the strain from my wrist's?
A. Lie back ...
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http://en.wikipedia.org/wiki/Recumbant_bicycle
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good idea how evver thats not the kind of bike i wqas talking about
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It depends on your bike GD (and I bet you know it:). I had a Honda CB 900 -79 F Bol d`Or. The comfortable speed on that one was around 110-120 km max (70-74 miles ca). For my Suzuki RF the comfortable speed was more like 130-150 km. (80-90 miles). All depending on the way you were sitting, I had a small windshield for both but nothing that really worked if you didn't try to really lie down on the bike. But the power from the CB was quite impressive at that speed, as the power from the Suzuki was at the other speed. They were quite different though, and very fun both of them. And I also prefer to sit up when driving. Which both allowed for.
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on my 07 hornet, too much is around 170-180 kph then you really feel that your head is comming off, happy speed is around 80-110 kph, which feels all too slow somtimes. is the some sort of funky maths i could do when picking a new bike? iv got eyes on a triumph daytona 675. but also do 25000k a year wrist strain hurts
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Steering Shock-absorber ?
A [steering] damper helps keep the bike tracking straight over difficult terrain such as ruts, rocks, and sand, and also smooths out jolts through the handlebars at the end of jumps. They also reduce arm fatigue on longer rides by reducing the amount of effort needed to control the handlebars.
http://en.wikipedia.org/wiki/Steering_damper
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It is something you are not going to be able to work out with maths unless you have a supercomputer, a 3D model of both you and your bike, and some fluid dynamics code. This is a fluid flow problem and difficult to solve, and will depend on the subtleties of the air flow around your bike. The easiest way to find out would be to try it...
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Dave my man. That's why we have you around here.
For once the headman (Boffin headman, if we now have to use the correct nomenclature) will have something real and important to do. Don't you worry, I will send you my Norwegian calculator, real Norwegian wood my man. And GD, RD and I'll just have that nice cupp'a while we wait for your results.
Just start with two wheelers, and then we'll work our way up to the trikes.
Don't stress, you have a lot of time...
If it is any help, mine is yellow :)
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Btw: If your wrists hurt, I would check for vibrations. That can give just that effect, does the handles/bike vibrate? Use thick gloves and see if it helps, you can also try to move the handlebar to see if you can find a better position to hold or/and, don't know the name for those pins/bars you rest your feet on, (fot-pinnar in Swedish) but maybe they are movable too. You're tall right, go to a workshop you trust (like good guys:) and talk with them. I'm sure they can help you out.
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Thinking some more, you could try to bandage the wrists, or buy those kind of support articles sports-guys use you know heavy lifters etc. And, after all, as soon as you pointed your lovely hornet in the right direction, why not let go of the handles, she will find her way alright, and then she will know that you trust her too. Furthermore it will relieve you of that strain, and impress the traffic around you immeasurably. A sure way of gaining that respect we bikers so rightfully deserve, just remember to smile, and use clogs, with such one can do all kind of things. But not for the hands though, that's for the feet. It's important to dress right...
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Actually that's what i use to do:)
Not let the grip go all together though, one have to reeve it somewhat, but that's about all the pressure i put on the handles, my bike vibrates too, thinking of it:) And yeah, driving as much as you do I can see it might become a strain. But try to find a way of sitting that puts as little weight as possible on the hands, and maybe see if you could tune it. It might be that it vibrates more than it needs too?