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Old Nov 20, 2009, 06:36 PM
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weight differences?

Heya,

Is there much weight difference between an Associated RC8 roller and a Hobao Hyper 8 roller?


Cheers
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Old Nov 20, 2009, 06:52 PM
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you could look it up on each rc's manifacturers website. ie: associated= www.teamassociated.com OR www.rc10.com either will work for associated. i don't know about hobao
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Old Nov 20, 2009, 06:58 PM
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Check this out rc cars database
Ofna hyper 8 is not in the list yet.
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Old Nov 21, 2009, 07:07 AM
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is it better to have a lighter car for speed runs or a heavier car? I've been told a heavier car will be faster because it will have more momentum, but it will take longer to get to its top speed
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Old Nov 21, 2009, 10:41 AM
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lighter with more downforce. the lighter car will improve handling, and acceleration. the downforce will make it hug the road better, which will also improve traction. the heavier car won't reach the same top speed. the motor or engine will have to work harder so it won't hit the same speed as a lighter car with the same motor or engine. hope this has helped!
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Old Nov 21, 2009, 12:01 PM
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http://monster.traxxas.com/showthrea...light=momentum

scroll down to the second to last post (it continues on the next page)
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Old Nov 21, 2009, 03:44 PM
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the guy who says stuff about being lighter with traction is faster is the same theory i have. and there also right at how a car can be too light. that's why there's huge wings on a lot of rc's and race cars to maintain traction at speed in light weight cars. and on average the lighter car will have the advantage. that's why everyone always tries to shed weight on dragsters and race cars. and there also right on how it will be hard to tell on an rc. just to small to make that much of a difference. and with these cars the affects won't be noticed at the current speeds that can be reached. but the lighter car will handle better and that will be noticible. if anything you want the lighter car because it will be faster and handle better and accelerate better and keep speed during the corners better. in a race, it will have the advantage and win. the heavier car will be harder to turn. oh yeah, if you want to improve downforce on a light car because you want more grip or if it can't handle as well at speed, just get a bigger wing. and the wing will help, as demonstrated on one episode of top gear. they had their proffesional racing driver take a car around the track, didn't have a wing, and he spun out. got a wing on it, did it again, and it alomost spun out but held it through. the wing can make a huge difference. sorry about the long post.
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Old Nov 21, 2009, 03:46 PM
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oh yeah, the wind won't make that much of any of a difference on a small extremely low to the ground rc car. the thing isn't nearly as tall as any real car, which the test was done on.
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Old Nov 21, 2009, 10:57 PM
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Light car can accelerate better but more prone to do flip before reach top speed.
Heavier car a bit late to reach top speed, slower acceleration but their top speed always better.
I've had test on my mini-t in the past with mamba 6800kv, one pack 3s lipo and two pack parallel 3s, weight difference over 100gr as I remember.
Guess what, the lighter setup, fly better unable to reach top speed like on heavier setup.
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Old Nov 22, 2009, 12:27 AM
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but with the downforce on the front and rear it won't. allowing a higher top speed. simple as that.
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Old Nov 22, 2009, 09:45 AM
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With same down force applies on both setup, still the heavier setup able to do more, as long we not running out of space and we are not limited to speed delivered by motor, let said if we have potential 100mph motor and put it on mini-t, which love to take off and cart wheel.
Many aspect makes our car take off and ended with bad landing, even small pebbles can end the day.

I was used to chase for speed, but not doing such thing anymore, offroad is more exciting.
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Old Nov 22, 2009, 10:53 AM
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agreed with that. seeing something zip past is fun, but seeing something that's not supposed to fly like a plane zoom through the air and the cars drift through sandy and muddy corners is a lot more fun.
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Old Nov 22, 2009, 12:44 PM
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Quote:
Originally Posted by jettrooper02 View Post
but with the downforce on the front and rear it won't. allowing a higher top speed. simple as that.
the downforce is essentially adding weight
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Old Nov 22, 2009, 12:55 PM
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yes, but only as it accelerates more and more. over all the car with the same amount of downforce neccesary to keep it on the ground as the heavier car has, the lighter one will still come out ahead. that and if you need to stop the car fast the lighter one will stop first. how fast are you trying to reach and in how much room?
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Old Nov 22, 2009, 01:15 PM
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The more the downforce the worse, look at F1 cars for example. These are built for cornering, but the wings slow them down during straight lines.

The fastest car is a light one (As long as it's still stable) with as little drag/rolling resistance and downforce as possible.
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