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Thread: off the wall ideas

  1. #41
    Variable Bitrate Banderon's Avatar
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    bubbrubb, I pointed out flaws in what you were saying. You posted up your ideas to get insight, and I showed you the negative aspects of implementing them. I didn't once say anything implying that you or your ideas were stupid. I just listed the problems I saw in implementing them.

    I didn't say that swiveling headlights didn't work. I said that it would require a LOT of work to implement them in a car on your own without an entire factory of parts and engineers behind you. Also, I don't know what effect tampering with headlights like that would have on passing an inspection. And BMW's headlights work fine, just as well as Cadillac's. I don't see what point you were trying to make there.

    Every statement I made is common sense, or knowledge you can look up. I didn't make any scientific claims that I can't back up.

    Also, the text you quoted is from a user's review of an Optima Yellow Top. That battery is about twice the price of a normal battery, and is made for high-power use. It's used in emergency vehicles that have a ton of lights to power, and show cars that have kilowatt amps. It's a deep cycle battery; it's made to be able to be fully discharged and recharged hundreds of times without adverse effects. My point being, it is a titan compared to the normal batteries most of us have in our cars.

    Furthermore, watts are a measure of power. P = I / V. That 800watt system was running off of his battery, so it was using ~12v. That means it was drawing about 66amps... for 2 hours. The battery is only rated at 55Ah! The guy was exaggerating his claim, since even the Yellow Top would have been completely discharged in less than even 1 hour.


    Edit: Actually, the 800watt is the maximum rating. It's more than likely that he wasn't pumping out the full 800watts. If he was putting out an average of 330watts or less the entire time, his battery would last the 2 hours he stated before completely discharging.

  2. #42
    Variable Bitrate Banderon's Avatar
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    Quote Originally Posted by bubbrubb
    Next is what i saw on 'pimp my ride', and it looked really simple and cost effective. They had seats with motors in them that massaged the driver/passenger seats! Im scared of massacuring my seats and installing those motors in them, but if someone wants to help me with the know-how i will go ahead and bite the bullets and try it.
    You could probably do this if you had a massage chair you didn't need. I'm guessing those massage heads travel up and down a rail in the chair, so if you ripped apart the chair and transplanted the rail into a car seat, in theory it should work. The only problems I see are with finding a massage chair with internals small enough to fit into a car seat... and that wouldn't screw up the heating pads that heated seats have.

  3. #43
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    Banderon,

    Can you please explain how you derived that power formula. It looks more like an inverted formula for resistance rather than a power formula. The three actual power formula I have seen is

    1) P=V(I)
    2) P=(IxI)/I
    3) P=(VxV)/R

    Not saying that you are wrong. Just asking from a students point of view.

    Course you just might have made a typo as well.

  4. #44
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    And according to Optima they have 12V batteries that are 75Ah

    Here are the links.

    http://www.optimabatteries.com/products/pdf/D31T.pdf

    and

    http://www.optimabatteries.com/products/pdf/D31A.pdf

  5. #45
    Variable Bitrate Banderon's Avatar
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    Quote Originally Posted by azcowboy
    Banderon,

    Can you please explain how you derived that power formula. It looks more like an inverted formula for resistance rather than a power formula. The three actual power formula I have seen is

    1) P=V(I)
    2) P=(IxI)/I
    3) P=(VxV)/R

    Not saying that you are wrong. Just asking from a students point of view.

    Course you just might have made a typo as well.
    Whoops. My bad. It's P = V * I. The damn / and * are right next to each other.

    The math was all right though.

  6. #46
    Variable Bitrate Banderon's Avatar
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    Quote Originally Posted by azcowboy
    And according to Optima they have 12V batteries that are 75Ah

    Here are the links.

    http://www.optimabatteries.com/products/pdf/D31T.pdf

    and

    http://www.optimabatteries.com/products/pdf/D31A.pdf
    The 31T and 31A aren't the ones the person's reviews were about. I posted the link to the D34/78 because I figured the double set of terminals would make connecting components easier.


    Edit: Also, those two are a different size.

  7. #47
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    Furthermore, watts are a measure of power. P = I / V. That 800watt system was running off of his battery, so it was using ~12v. That means it was drawing about 66amps... for 2 hours. The battery is only rated at 55Ah! The guy was exaggerating his claim, since even the Yellow Top would have been completely discharged in less than even 1 hour.
    thats exactly what i mean, he just comes in with facts and figures that he makes up to make his statements look more 'factual'. When in fact, hes just trying to shoot peoples ideas down....even if hes giving you a compliment, there is some twist within his statements--theres always a but when he posts, so like i said earlier, he shouldnt even post because everything his says- in the end- is negative.

  8. #48
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    Oh ,and im working on the layout for my emogen (thats the code name-- stands for emotion music generator )

  9. #49
    Variable Bitrate Banderon's Avatar
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    Quote Originally Posted by bubbrubb
    thats exactly what i mean, he just comes in with facts and figures that he makes up to make his statements look more 'factual'. When in fact, hes just trying to shoot peoples ideas down....even if hes giving you a compliment, there is some twist within his statements--theres always a but when he posts, so like i said earlier, he shouldnt even post because everything his says- in the end- is negative.
    Oh CMON! Are you kidding me?? I have a typo and put a wrong operator in an equation, and that means I made it all up? Well I'm sorry, but no, I didn't make up algebra. I didn't make up the basic power forumla. I didn't make up the battery's capabilities. And I didn't make up the numbers that came out as a result of it.

    Why don't you try plugging the numbers in yourself and see what you get.


    And again, nowhere did I once say that any of your ideas are stupid or anything of the sort. I said they'd be very difficult to implement as you described them and gave you reasons for why. It's called "feedback".

  10. #50
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    Banderon,

    Can you please post a link to that optima review you are talking about. I can find it in the search I did.

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