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Old 02-23-2015, 07:56 AM   #16
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I never use it. DB always unsettled the car (on or off road) when I didn't want it to. With DB, you never get the option of a neutral off-power roll, whether in a corner, trying to avoid an accident, or what ever. You're either pounding the rear tires, or throwing all the weight forward.
In all my years of racing, either cars, motorcycles or R/C I have learned one thing that stays consistent across all forms of racing.

If you are not on the gas or on the brakes you are wasting time.

I am always either on throttle or on the brakes. Racing is a contest of speed. Not slowing down is the ultimate goal but you have to slow down for turns, if you are coasting that is time you could be accelerating just a little longer and braking a little harder/later.
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Old 02-23-2015, 08:00 AM   #17
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I say try it out and see what you like then make your own judgement call. There is no pros and cons.
. End of story!
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Old 02-23-2015, 08:00 AM   #18
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There is a couple of cons to it, which have to be monitored.

Increased heat, the motor is always doing something, so if you are pushing temps already, running drag brakes will make you run hotter.

Battery life, again, the motor is always doing something, so while sitting on the start grid your car has the brakes applied, make sure you have enough battery to spare the added needs.

Tire wear, very slight, but there is increased tire wear due to constant loads.
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Old 02-23-2015, 08:30 AM   #19
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I totally disagree with this, respectfully. I mainly race off road, 17.5 buggy and I use 40% drag brake, in my wheeler I use 10%, it makes jumps a lot harder because you have to control the car mid air to keep from nosing over, but in faster corners I dont even use the brake, I just let off and allow the drag brake to do the work, it really helped with my consistency. I am going to be playing with it in my 17.5 TC as well as my VTA car once I get more practice time at the track and 1/8th buggy as soon as it warms up around here. It is a very useful tool for tuning, call it lazy if you want but I think it is just another tool in the tool box that you can use if the conditions call for it. You would never remove engine braking from a real car in real racing, why would you in R/C?
Please note - this question was posed in an on-road thread, and my answer addresses the question strictly from that driving perspective. I'd be the first to acknowledge that using drag brake in an off-road vehicle would most likely lead to more consistent lap times; however, when racing on asphalt or carpet, I've personally found that my lap times generally improved when I stopped using drag brake.

Like many others that have answered this question have stated - it'll come down to your personal preference. Use whichever method makes you faster.
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Old 02-23-2015, 08:43 AM   #20
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My experience is that is a good thing when you know how to use it. I have been using it as this:

Open tracks, only a small amount, around 5%, it will help most of the time to keep the car in the line and will not reduce a lot the speed.

Small technical tracks, around 15% it can help you a lot when you have to link turns as you have to move a lot from gas to brakes. Yes maybe you can have a bit more heat on the engine, that is why I will not go for more than 20%.

i have been running, tc blinky, f1 cars and minis and always has been around those values.
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Old 02-23-2015, 08:54 AM   #21
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Drag brake.. well 1st off someone posted it goes into affect in neutral Throttle
well thats wrong .. drag brake on most esc goes into effect the instant the throttle is no going +.. the second u move your trigger towards neutral Th. it will engage..

as far as using it many drivers use it even though they might tell you they dont..

I personally Never use it tried it and dint like the results..
pro and cons

can teach you to be a faster driver but adds heat to esc n motor both and uses those needed mah in a longer race 7-10 minute main..

so set it up give it a try..see what you results are .. good luck. monitor the HEAT..
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Old 02-23-2015, 08:55 AM   #22
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I'm using drag brake for many years now and it's a tuning aid and my personal preference to use it.
I feel the car drives more stable toward the corners and gives me a lot faster laptimes and more consistent then without using drag brake.
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Old 02-23-2015, 10:14 AM   #23
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Quote:
Originally Posted by 1/4milecrazy View Post
In all my years of racing, either cars, motorcycles or R/C I have learned one thing that stays consistent across all forms of racing.

If you are not on the gas or on the brakes you are wasting time.

I am always either on throttle or on the brakes. Racing is a contest of speed. Not slowing down is the ultimate goal but you have to slow down for turns, if you are coasting that is time you could be accelerating just a little longer and braking a little harder/later.
Fair enough.

My view is that brakes are there when I need them. When I raced MX back when I was younger, I didn't have drag brakes on my bikes either. I used the lever on the bars or foot brake.

Dropping the throttle is enough to get the weight forward in the slow class I'm running in. I suppose a 13.5/10.5 class would be quite different though. For me, braking and slowing down too much kills much desired momentum.
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Old 02-23-2015, 10:42 AM   #24
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10-15% in 17.5 TC on a small track. Will decrease it on a more flowing track.

20-50% drag brake in 21.5 F1 depending how tight the track is.

Keep in mind drag depends how much drag there is already is in your drivetrain (if you run belts tight or you run a direct drive pan car) And also on the motor and rotor strength too. A mod motor with 13mm high torque rotor will have naturally much more built in drag than a 21.5 with 12.3mm high RPM rotor, so your percentage values can vary greatly.
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Old 02-23-2015, 11:03 AM   #25
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20-30% drag brake in all blinky classes for me

less time on the brakes, more time on the throttle.
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Old 02-23-2015, 11:17 AM   #26
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I use 20-30% drag brake in blinky. For me it's easier to tighten up my driving lines with drag brake. I also feel it's much easier to drive in traffic with drag brake.

Regarding losing corner speed. The trigger isn't an on / off switch. There are other positions besides full throttle and full neutral.
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Old 02-23-2015, 02:01 PM   #27
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Quote:
Originally Posted by BigBadDogg View Post
Drag brake.. well 1st off someone posted it goes into affect in neutral Throttle
well thats wrong .. drag brake on most esc goes into effect the instant the throttle is no going +.. the second u move your trigger towards neutral Th. it will engage....
This is completely inaccurate. If it were the case, that means once you go full throttle you cannot use less without the brakes engaging until you squeeze for more throttle again. It would be the equivalent to simultaniously being on the gas and brake pedal of your car. This is impossible in an electric motor. Drag brake only starts once your trigger is in a nuetral position.

Push brake is the opposite it applies a slight amount of throttle at neutral to assist if overcoming the motors natural parasitic drag.

Both push and drag brake also are only enganged when the motor is turning. At a dead stop, 0 RPMS, there is no power applied to the motor. So dont worry about draining you battery on the starting grid.

Also once the trigger is pushed into actuall braking, your set minimum brake percentage
engages.

Unless your running pan cars and/or oval most people use drag brakes. Very few of use have the finess required to give small amounts of brake to set a cars suspension for a turn. Drag brake helps do that for us.
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Old 02-23-2015, 04:36 PM   #28
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I find that in TC, the preferred drag brake level greatly varies according to conditions. At Tamiya America a mixed layout track I barely use around 10 percent using low traction b3 tires and around 5 when using higher traction sorex. At TQ a very tight high traction carpet track I use around 15 percent for best result. A motor with strong rotor will require less drag brake. The point of drag brake is to have a little more forward weight transfer to better settle your car in for a turn and compensate for the time lost when you go from full throttle to braking. That distance your finger have to travel to braking actually does make a difference in my experience and drag brake compensates for it quite well. Don't go over board on drag brakes as well because too much will cause issue with corner speed and jerky forward and aft weight transfer when switching between on and off throttle unsettles the car. I've also had times where the traction is good enough and the layout is flowing enough where drag brake is not needed. So it is a balancing act and personal preference thing. You just have to know what it will do for you and use it accordingly.
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Old 02-23-2015, 06:47 PM   #29
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I appreciate and understand the input from both ends. Thanks!
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Old 02-23-2015, 08:47 PM   #30
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I'd say drag brake probably got more important since brushless motors were introduced. Most of the brushless motors I have run, have almost no natural braking, so drag brake is a must to get a good feel.

Anyone who says drag brake upsets their car, has not got their drag brake set correctly. This has to be set for the conditions and what works well on one track, may be too much for another track due to grip levels and type of corners.
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