arogon1235 Posted October 27, 2012 Share Posted October 27, 2012 (edited) hi i am currently planning my rc car speed project i am aiming for 100mph+ i will be using a maxamps lipo the 5450 4s one.the motor still havent decided and the esc is a mamba max pro and the car well i dont know what one to get so if you got any ideas it would be very helpful i will be planning to run it at the 2013 ROSSA speed event which will be on the 17-18th august could change though. Edited October 27, 2012 by arogon1235 Quote Link to comment Share on other sites More sharing options...
NuttyProfessor Posted October 27, 2012 Share Posted October 27, 2012 Rear wheel drive only for ROSSA.will only need 3s, 4s is pushing the ESC. Quote Link to comment Share on other sites More sharing options...
Bubbles Posted October 27, 2012 Share Posted October 27, 2012 Rear wheel drive only for ROSSA. nope. Quote Link to comment Share on other sites More sharing options...
NuttyProfessor Posted October 27, 2012 Share Posted October 27, 2012 Thought that was the rules, rwd only or a 4wd with the front dogbones removed? Quote Link to comment Share on other sites More sharing options...
Bubbles Posted October 27, 2012 Share Posted October 27, 2012 Thought that was the rules, rwd only or a 4wd with the front dogbones removed? I would like to know where you got those from consider checking the ROSSA website, where all of the rules are available I've run 4wd for 2 years Quote Link to comment Share on other sites More sharing options...
.AJ. Posted October 27, 2012 Share Posted October 27, 2012 What style chassis will you be running???? Quote Link to comment Share on other sites More sharing options...
Si Coe Posted October 27, 2012 Share Posted October 27, 2012 If you go and check the ROSSA results page, you'll see that year after year only 1 or 2 people ever break the 100mph barrier. In fact, digging deeper its mostly the same people ever time as well. Now using a speed calculator, there are loads of motor/cell combinations that should be able to propel a car to that speed, but it seems most don't manage it on the day. In fact, most don't even manage more than 'out of the box' claimed speeds! The reason is that making a speed run car isn't at all easy. Power is in plentiful supply, but control is not. I built a speed run car myself out of an RC18T - on a dyno it suggested 72mph at the wheels, factoring in resistance I figured 60+ in the real world. But actually every time I tried to clock it I couldn't get a better speed than my racing 1/10ths (around 45mph). It had the power to go faster, but keeping it under control for long enough to clock a time was just too difficult. From this I have realised that the way to build a speed run car is to start with the chassis and worry about the electrics later. Any other way is a waste of time and money. Quote Link to comment Share on other sites More sharing options...
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