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Old 05-24-2009, 09:51 PM   #1
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Default Why is Reverse prohibited in race?

Can anyone tell me why in some races reverse is prohibited? Sorry I am quite new to official races. Thanks for the enlightenment.
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Old 05-24-2009, 09:59 PM   #2
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because when you crash its supposed to be a penalty so you have to wait for a marshall to come get it if you park it good.

It's also dangerous when you backup into oncoming traffic!
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Old 05-24-2009, 10:02 PM   #3
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That and it makes it fair to other racers who do not have reverse..
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Old 05-24-2009, 10:52 PM   #4
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That makes sense. Thanks for the info. But now I am curious. Why do some good ESCs have no reverse? Even some cheap ESCs do have it. Are there disadvantages of ESCs that have reverse function?
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Old 05-24-2009, 10:57 PM   #5
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High end ESC's don't have it because they are intended for racing where it is not allowed.
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Old 05-25-2009, 12:06 AM   #6
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Not having reverse also reduces weight and internal resistance. In a brushed ESC, the motor positive can be directly connected to the battery positive for max flow of amps and minimal voltage drop.

As far as weight goes, you need a dedicated set of FETs to run reverse. That means you either have to make the unit bigger with more FETs, or you have less FETs for forward.
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Old 05-25-2009, 12:17 AM   #7
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cant you save weight by taking out a reverse esc and replacing it with a normal one or is that only for nitro cars?
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Old 05-25-2009, 12:23 AM   #8
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Quote:
Originally Posted by ageofdeath30 View Post
cant you save weight by taking out a reverse esc and replacing it with a normal one or is that only for nitro cars?
OMFG!.........
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Old 05-25-2009, 12:26 AM   #9
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I appreciate all your enlightenment guys. Thank you!
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Old 05-25-2009, 12:37 AM   #10
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Crazy...you learn something everyday
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Old 05-25-2009, 10:54 AM   #11
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well im sorry Im pretty used to nitro offroad and ive only just started on electric onroad.
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Old 05-25-2009, 11:02 AM   #12
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Quote:
Originally Posted by xniperliams View Post
Why do some good ESCs have no reverse? Even some cheap ESCs do have it.
its nice for practice with the good esc's. the gtb has a practice mode where it has the reverse function.
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Old 05-25-2009, 11:50 AM   #13
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Quote:
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OMFG!.........
That was wrong. He is a new racer and stuff like this will kill this hobby.

What were you thinking???
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Old 05-25-2009, 11:59 AM   #14
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Quote:
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cant you save weight by taking out a reverse esc and replacing it with a normal one or is that only for nitro cars?
Why do you even have an ESC in your nitro car to replace?
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Old 05-25-2009, 04:54 PM   #15
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Reversing is illegal as it can result in big accidents. If you race for a bit you will see plenty of stupid accidents caused by people crashing then rejoining the track with little or no care about other cars. Imagine if they had reverse!

Plenty of high end speedys have reverse. All top end SP speedys have the option of forward/brake or forward/brake/reverse with the same settings. Brushless has this advanatge over brushed in the reverse in managed by the software, not the hardware.

If you have reverse save it for practice days with no other traffic on the track.
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