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BusaDave9 last won the day on June 3

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About BusaDave9

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  • Birthday 09/29/1961

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    Durango, Colorado USA

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  1. My question pertained to torque and differentials. Yes, a tank's track gets such good traction it doesn't need a differential but that's not what I asked. It's like someone asking about how an airplane flies and you say "don't ask about airplanes, helicopters are much better because they can land in more locations." We're on a different topic now. I don't know what more to say. Yes, a tank gets good grip. I try to get good grip with my jeep by putting on larger tiers with an aggressive tread but I can't put a track on my jeep and even if I could it's not allowed because they tear up the t
  2. Grip alone is not always the answer. A 2 wheel drive car may have a problem with grip, especially off road. A locking differential will help and four wheel drive helps. You are saying a tank has great traction. That's true, tracks help tremendously. A tank has such good traction (grip) that it almost never gets stuck. In a tank grip alone is good enough. I say grip alone is not always the answer because many vehicles don't get excellent grip. When a tire starts to spin that's when the type of differential is important. Off-roaders like to have locking differentials to apply torque to the
  3. I'd rather not confuse this thread with talk about how a tank works but since you brought it up. The engine of a tanks turns the drive sprockets at the rear of the track (marked in red here). This is where the engine applies torque to the track to propel the tank. All the rest of the wheels are idle wheels. The yellow are road wheels with suspension. The blue is tension wheels for the mechanic to adjust how tight the track is. and that's all I have to say about that.
  4. Yes, if a tire can't grip it can't apply torque and propel the vehicle. But when one tire has grip and the other doesn't that's when the design of the differential makes a difference. When one tire on an open or regular differential has no grip then neither tire can propel the vehicle. (Torque is limited by the tire with the worst traction) When one tire on a locking differential has no grip then the one tire with grip can propel the vehicle. (Torque is delivered to the tire that has traction)
  5. Yes, I agree. When the vehicle is stuck no work is being done. When it starts to move lets not try to talk about which tire is doing the work. Then I'd like to talk about torque applied to the wheels.
  6. With an open differential, when one tire is spinning and the other is not. BOTH tires are helping push the car. You can say push. You can say torque. You can say load or work. You can say whatever you want but both tires help the car get moving. People see the one tire spinning and they think this one tire is the only one doing any effort to move the car. This is not true. Both tires are helping out EXACTLY the same amount. Thought experiment: Lets say someone is trying to turn the tire on dry pavement. He has a long torque wrench on the hub of the wheel. He may be pushing with all his m
  7. Yes, people misunderstand torque, power and energy .... and I would like to add speed. Sure it takes energy to spin a tire but that doesn't mean it's applying that energy (or torque) to the ground. For that reason I say for this discussion it is best to imagine the weight of the wheel can be disregarded. Imagine it doesn't weigh anything. I disagree with your sentence I underlined. Lets say we've got an open differential and one tire is on glaze ice. You can't apply much torque to this tire before it starts to spin. Lets say only five foot pounds of torque can be applied before it sp
  8. I enjoy taking my Jeep up into the mountains on rough trails. I have gotten into an argument with some of the others that also enjoy this pastime. I was hoping you guys could settle a dispute about locking differentials. Background I think this is mainly a science question. You don't have to know much about cars but you do need to know the following: Open Differential This is the most common differential found in almost all cars and trucks. Lets say a car with an open differential has the left tires on dry pavement. The right tires are in snow covered ice. If you have an open d
  9. That reminds me of a cartoon I saw years ago. It was 2 astronauts standing on another planet looking at their own shadow. But the shadow was only their skeleton. One of the astronauts says "I don't like the looks of that." I wish I could find that on the internet. It would be much better than me describing it.
  10. Yes, we can close the thread. you and others have made some good points but then comes a rebuttable that has nothing to do with my position. That was happening a lot. Then I'm thinking if you don't know my position who are you arguing against? A straw man you've propped up?
  11. To point out that race is real as it pertains to humans and can be used determine where the decedents of some humans have come from. Why would I ever want to talk about race in that way? The same reason science likes to find out the origin of anything. I can say that Junco came from Oregon. Or a geologist can say that rock was formed in a shallow sea. Or an astronomer might say our solar system was formed after a very large star exploded. Science is all about asking and answering these types of questions but when we start talking about humans everyone asks "why would you want to ask
  12. That was stated in my very first post. Almost every post I make I repeat that the differences in human races are superficial and then people still say: Then strange says: I said no and explained my reasoning but I'm not going to repeat myself again. Then Strange asks the same question again except for red hair: Twice I explained that: but I'm going to scream if one more person says I've addressed genetic diversity and superficial differences many times. Since the differences in human races are superficial there isn't much genetic
  13. I refuse to respond to any of your posts until you reread this thread. Be careful to understand my posts before you reply. Please start with my very first post. I am tired of repeatedly posting the same thing over and and over again just to have people accuse me of saying things I have never said. You see the title says someone is asking if there "are different human races". From that you have a preconceived notion of what I have to say. Anyone that thinks human races are different is a racist. Racists think they know the races. Racists will overgeneralize with few statistics. They will
  14. Me? Me specifically? Examples please. I think you are generally referring to people that say there are human races. Now you are being ridiculous. Many of these comments are said in relation to human races. Don't post anything that you would not also say about bird races or races of any other animal. I think the term race should be used for humans the same as any other animal. Looking through almost any bird guide book there are pictures and explanations of different races. Races are very important to ornithology. But that does not mean races are clear cut and definitive. That's tru
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