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    Re: Shock Pictures, please give feedback, good, bad, horrible, placement?..?
    #11
    Millenium Member nutz4sand's Avatar
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    The 90 degrees is part of a problem on the spindle. You need some king pin angle which will make the spindle itself into the upright at some angle. The size of the angle depends on your tire size and rim offsets.
    Now that NOBAMA has PROVEN he is the absolute WORST president in the history of history Jimmy Carter can thank him for stealing the dunce crown.

    Lets hope the next guy repeals NObama care along with the rest of the stupid crap this blight on our windshield has done.
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    Re: Shock Pictures, please give feedback, good, bad, horrible, placement?..?
    #12
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    Any way I could call u and ask u some stuff. ? Id even pay for ur time if need be. I need u on the team. Lol.
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    Re: Shock Pictures, please give feedback, good, bad, horrible, placement?..?
    #13
    Millenium Member nutz4sand's Avatar
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    Not saying its not possible but gonna crash soon tonight. You need to do some good reading. give me a minute
    Now that NOBAMA has PROVEN he is the absolute WORST president in the history of history Jimmy Carter can thank him for stealing the dunce crown.

    Lets hope the next guy repeals NObama care along with the rest of the stupid crap this blight on our windshield has done.
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    Re: Shock Pictures, please give feedback, good, bad, horrible, placement?..?
    #14
    Millenium Member nutz4sand's Avatar
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    R/C Car Handling - An Introduction To Vehicle Dynamics

    RcTek - Radio Controlled Model Car Handling - The Ackerman Steering Principle

    http://www.racingaspirations.com/suspensiongeometry.php

    Rorty Racing

    These sites should help you get a lot better grip on whats needed. Some are RC car and on road but it applies still to long travel offroad quite closely. Go to those sites and read till your eyes bleed!! lol
    Now that NOBAMA has PROVEN he is the absolute WORST president in the history of history Jimmy Carter can thank him for stealing the dunce crown.

    Lets hope the next guy repeals NObama care along with the rest of the stupid crap this blight on our windshield has done.
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    Re: Shock Pictures, please give feedback, good, bad, horrible, placement?..?
    #15
    Millenium Member nutz4sand's Avatar
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    Also a couple of them are interactive so you should see what you can do with them that have clickable links. Learn a good bit more than just reading with the moving illustrations.

    The sand man is beating the tar out of me so Imme make a snack and hit the hay soon.
    Now that NOBAMA has PROVEN he is the absolute WORST president in the history of history Jimmy Carter can thank him for stealing the dunce crown.

    Lets hope the next guy repeals NObama care along with the rest of the stupid crap this blight on our windshield has done.
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    Re: Shock Pictures, please give feedback, good, bad, horrible, placement?..?
    #16
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    Thanks man. Im calling it a night in the garage. Time to open the books n do some reading.
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    Re: Shock Pictures, please give feedback, good, bad, horrible, placement?..?
    #17
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    Excellent links........I have them all bookmarked myself. At least with a little knowledge and an understanding of terms you will be able to ask intelligent questions that others might have input on as well.....
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    Re: Shock Pictures, please give feedback, good, bad, horrible, placement?..?
    #18
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    Maybe this will help if it shows right.

    1st. bumpsteer-draw a line thru spindle, draw a line thru upper&lower frame mounts=this is how long the tierods need to be total w/heims. On a front steer rail the spindle mount for the tierod should be out closer to wheel pass the line so inside tierod pivot should be outside of frame line by same ##
    2nd. camber-by making the spindle side of arms TALLER than frame side the wheel when cycled up will tilt in, camber gain a good thing. This could be done by changeing the frame mount spacing too, but no since starting completely over.
    3rd. castor-by leaning the spindle back it will make the wheels retun to center when driving. less arm fade(i prefer using rake on frame to get castor while also allow front tires to go over bumps easier) but like #2 says no since starting completely over.
    4.kingpin inclination-makes turning much easier. that angle is were the weight lands on ground. center of tire is good. Especially when cornering.

    Much of these can be close in offroad and you wouldn't notice, but on asphault you would be putting tires on it every 10,000 miles. Get them off by a lot and it will wear you out to drive, be unstable in curves, and not turn for crap.

    You need the tires and wheels to set KPI correct. Also for ackerman tying the string to center of rear carrier running under buggy to thru ea spindle to determin where to mount tierod on spindle. You can mount them anywhere on that string.
    Last edited by CARLRIDDLE; 07-12-2011 at 01:45 PM. Reason: just cause
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    Re: Shock Pictures, please give feedback, good, bad, horrible, placement?..?
    #19
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    It will also have reverse Ackermann. Your inside tire will turn slower than your outside tire in a turn. That is bad. I came to that conclusion because your outer tie rod ends are directly in front of the ball joints. That would would make your tires turn the same except that it appears your rack is forward making the tie rods drop back a little. That makes the inside tire turn less and the outside tire turn more. A way to set it pretty close is to draw imaginary lines (or use string) from the middle of the car between the rear tires through the pivot of the ball joints and the outer tie rod end should be on that line. With front steer (tie rods in front of arms), sometimes it is difficult to push the tie rod end out far enough. Moving the rack back will help. If you have to move the strings in by 2 degrees to make things work, move the rack back enough that the tie rods angle forward by 2 degrees.
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    Re: Shock Pictures, please give feedback, good, bad, horrible, placement?..?
    #20
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    I left that part out because of information overload. It will take a football field to turn w/o correct ackerman. The problem comes with the rack, the tierod mount out on wheel spindle is going to be past the KPI, therefor the inner tierod mounts should be past the frame mounts by roughly the same distance. Otherwise the bumpsteer, tire are going to toe out under compression, will be scarry at any speed.

    Looks a lot like early short sand car front. No KPI, rev ackerman, and aslong as dune area big enough or a diff w/turn brakes your good to go!
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