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Thread: Different dragster chassises

  1. #1

    Different dragster chassises

    What kind of dragster chassises are there?

    -Hardtail. This is most simple and easy to understand.
    -Slipjoint (what does this mean?)
    -4-link. I have a high 8 second, 4-link door car myself so this is about the same thing?
    -Monoshock. Got a picture of these?
    -Swingarm??
    -Something more that I don't know?

    What kind of pros and cons between these? What's best for Super Comp? What's best for Comp, Super Pro or Top Dragster?

    thanks,

    Mikko Niemi
    Finnish Super Pro #1984

  2. #2
    Senior Member RACING JUNKIE
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    OK, I will bite.

    Hardtail: The most complext car to make repeat. This is all done in tires, gearing and converter

    Slipjoint: Hardtail car that has spots in the chassis the allows certain points to moved or "slip" on the tubes.

    4-link: Rear suspension the consist of 2 shocks, wishbone, anti-roll but ultimately is independent on each side of the rear end housing

    Swingarm: This is like your 4-link however the bottom 2 four link bars will be connected to each other with a K-bar or X bar that does not allow the bottom bars to move independent of each other.

    Monoshock: Only 1 shock and is found a more typical set up with a swingarm suspension.

    Dual Shock: 2 shocks which is most commonly used on a 4-link car as well as some swingarm cars.


    A 4-link or swingarm car allows for more error to be made in tire pressures and converter choices. It will allow you to adjust for track conditions easily. You have a tunable chassis with the suspension. With the hardtail/slip joint you can either change tire pressures, converters or gears to adjust to track conditions.

    Hardtail/slipjoint cars have a tendency to bounce when trying to slow from a burnout or at the finish line when you lift. A 4-link car will not do this and for that reason can be much easier for someone to drive.

    If I was going to bracket race or super comp race or even a top dragster race I want suspension on my car. I want the car to be smooth off the line, smooth when the stop comes off and smooth when I am racing the finish line. Heck, Marco Abruzzi is going 6.70's on motor only with a monoshock swingarm car. Plenty of guys deep in the 6's with suspension.

    Here is where the down fall of suspension comes into play...weight!!! A 4-link car is heavier than a hardtail/slipjoint car. So if you don't want to spray hard or have the coin for a monster of a motor, you will be able to go faster for a smaller price with the hardtail/slipjoint car.
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  3. #3
    Thanks, great info.

    I found also this with google: http://www.diamondracecars.com/diamo...suspension.htm

  4. #4
    Senior Member RACING JUNKIE
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    I had that set up on a car. It was a monoshock swingarm in the rear with the single shock up front. The front suspension is the least expensive way to add a suspension to your car. It is not as adjustable as the rear but will help out on a hardtail/slipjoint car. It will help control front end lift and help stabalize the chassis when stopping or racing the finish line.
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  5. #5
    Senior Member RACING JUNKIE
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    Quote Originally Posted by shawnp

    If I was going to bracket race or super comp race or even a top dragster race I want suspension on my car. I want the car to be smooth off the line, smooth when the stop comes off and smooth when I am racing the finish line. Heck, Marco Abruzzi is going 6.70's on motor only with a monoshock swingarm car. Plenty of guys deep in the 6's with suspension.

    Here is where the down fall of suspension comes into play...weight!!! A 4-link car is heavier than a hardtail/slipjoint car. So if you don't want to spray hard or have the coin for a monster of a motor, you will be able to go faster for a smaller price with the hardtail/slipjoint car.
    I agree dead on .. bracket racing a suspended car is what Id want also.
    He is right I've had cars backhalfed its a extra 100lbs, and then your have more rotating weight with a driveshaft robbing HP.

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