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  1. #1
    RC Qualifier TITANIUM94010's Avatar
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    Does body effect performance?

    Does the body choice really affect the performance of the car? I'm assuming that at 60-70 mph a more aerodynamic would be slightly better, but would it makes the difference between being slightly below 70mph and breaking 70?

    And is it recommended to run without a wing/spoiler? I've got a pretty aggressive gt wing on my current body.
    Jumping: maneuver and pray it won't break.

  2. #2
    RC Qualifier RCWilly's Avatar
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    So I would say that the body would affect the performance only to some degree. If it is a regular sized touring car body, it most likely won't make a lot of difference. If you change from a really bulky and boxy body (a truck body for example) to a sleek racing body, you would probably notice some difference (only noticeable at high speeds). I also have a spoiler on mine, and it doesn't really give any noticeable amount of downforce (using the stock brushed motor). Makes the car look good though. I did a test on it with a leaf blower, and a shock spring (the spring looks compressed but is at about the same compression without the wind):



    In the video, you can see that there is a bit of downforce to compress the spring slightly, but not enough to keep it still, so the car bounces up and down.

  3. #3
    RC Enthusiast
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    Yes, and the aero mods you do affect it as well. I have two bodies, in stock form the fox Mustang sometimes wanted to blow over at 40mph+. To fix that I made a front splitter, a rear undertray (a diffuser I guess), and a Saleen spoiler. It handles fantastic and stays glued to the ground no matter what. I can take it over 50 with no fear.

    If I pop on the '05 GT40 body on the same suspension set up for the Mustang it will go fine in a straight line, but there's some pressure zone bowing up the body in the rear. It also likes to spin out more in turns. I did some mods to the GT body, I haven't tested it yet. I need to make a splitter for it as well, I dont want to use the spoiler that came with it. I want to take this body to 70mph.

    But your best speed run bodies for every decimal MPH are low, no wing, and the rear cut out for drag.

  4. #4
    RC Racer
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    Quote Originally Posted by TITANIUM94010 View Post
    Does the body choice really affect the performance of the car? I'm assuming that at 60-70 mph a more aerodynamic would be slightly better, but would it makes the difference between being slightly below 70mph and breaking 70?

    And is it recommended to run without a wing/spoiler? I've got a pretty aggressive gt wing on my current body.
    Yes, I am testing bodies right now while I wait on the mail and the Ford Mustang GT body flips at about 40mph. I ran a Carisma Mercedes AMG Type-C DTM last night without the canards and wing and it flipped at 60mph. The Ford GT body may have faired better, but I don't like the fake rear intakes (or Ford). I am going to run the Mercedes body again with canards and wing when the battery finishes topping off and I anticipate better results. My DeltaPlastik speed run body is in the mail. Taking it to 6s 2200kv next Friday; eventually 8s.

    Wings are good for downforce up to a point (140mph IIRC) and then cause too much drag and are either moved to near horizontal or removed altogether in favor of a spoiler or vertical stabilizers.

  5. #5
    RC Racer
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    Quote Originally Posted by Decoy Octopus View Post
    and the rear cut out for drag.
    I am going to test the MST diffuser on the 4tec. It's in the mail from China, so another couple of weeks out. I will report back.

  6. #6
    RC Racer
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    Quote Originally Posted by Spechal View Post
    Yes, I am testing bodies right now while I wait on the mail and the Ford Mustang GT body flips at about 40mph. I ran a Carisma Mercedes AMG Type-C DTM last night without the canards and wing and it flipped at 60mph. The Ford GT body may have faired better, but I don't like the fake rear intakes (or Ford). I am going to run the Mercedes body again with canards and wing when the battery finishes topping off and I anticipate better results. My DeltaPlastik speed run body is in the mail. Taking it to 6s 2200kv next Friday; eventually 8s.

    Wings are good for downforce up to a point (140mph IIRC) and then cause too much drag and are either moved to near horizontal or removed altogether in favor of a spoiler or vertical stabilizers.
    Adding the wing and canards, I hit the advertised 70+mph (71mph) before I ran out of runway and had to let up and try to turn out of it. Unfortunately, it slid into a curb and broke the rear carrier and lost the drive axle.

    What sucks is I was just looking at the LHS today for aluminum carriers but they didn't have any.

  7. #7
    RC Competitor
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    Apr 2019
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    If I may throw in my 2. I ran my 4-tec this weekend at a parking lot race using the Protoform C8 body. I think the rear wing really helped keep the rear down. There was a high speed left at the end of the straight and I was surprised how well it turned full throttle through there.

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