Posts Tagged ‘castle creations mamba monster’

This info is extracted from the linked Castle Creations URL below. I have long desired to buy myself an electric RC car or SC truck, and have spent considerable time researching on the rather complex info on the battery types, motor types and ratings, and ESCs. I came across this tutorial and I found it rather good. It applies fairly generally, so if you’re considering on what KV-rated motor, ESC and battery system to get, I hope this helps!

MAMBA MAX 10th SCALE POWER PACKAGE INFORMATION

1. Which system do I need?

That depends on how many cells, what vehicle, and what track/expectations?

For 6 cells NiMH:

Touring car (Associated TC4, Losi XXXS)

Short technical track – 4600 with good gearing range, or 5700 geared very small

Medium track – 5700 large gear range, 6700/6900 good gear range, 7700 geared small

Large track (nitros top out on the straight) 6700/6900 geared high, 7700 good gear range

2wd Buggy/Truck (Associated T4, B4, Losi XXXT, Duratrax Evader, Traxxas Stampede) and 4wd buggy (Kyosho Lazer, Losi XXX-4)

Short track – 5700, possibly 6900 geared small

Medium track – 6900, possibly 7700 geared small

Large track (nitro trucks topping out) big gear 6900, 7700

Measured speeds with 6 cell NiMH in a stock geared Associated B4 buggy:

4600: 30mph

5700: 35mph

7700: 45mph

On 2s Lipo:

Touring car (Associated TC4, Losi XXXS)

Short technical track – 4600

Medium track – 5700 large gear range, 6700/6900 geared small

Large track (nitros top out on the straight) 6700/6900 and 7700 should have good gear range

2wd Buggy/Truck (Associated T4, B4, Losi XXXT, Duratrax Evader, Traxxas Stampede) and 4wd buggy (Kyosho Lazer, Losi XXX-4)

Short track – 4600 or 5700

Medium track – 5700 or 6900 geared small

Large track (nitro trucks topping out) big gear 6900, small gear 7700

Measured speeds with 2 cell LiPo in a stock geared Associated B4 buggy:

4600: 30mph

5700: 40mph

7700: 50mph

3s Lipo

NOT FOR USE WITH THE 7700 MOTOR

Touring car (Associated TC4, Losi XXXS)

Short technical track – NA

Medium track – 4600 large gear range, maybe 5700 geared small

LARGE track (nitros top out on the straight) 5700 geared up

2wd Buggy/Truck (Associated T4, B4, Losi XXXT, Duratrax Evader, Traxxas Stampede) and 4wd buggy (Kyosho Lazer, Losi XXX-4)

Short track – 4600

Medium track – 5700 small gear

Large track (nitro trucks topping out) big gear 5700

Measured speeds with 3 cell LiPo pack in a stock geared Associated B4 buggy:

4600: 45mph

5700: 60mph

via Castle Creations | FAQ: Mamba and Mamba Max.

Electric RC Hobbyists and Racers-to-be need to know how to select a good, suitable motor for the RC car or truck you own. It isn’t always about picking the fastest motor with the highest revolutions per minute (rpm). For instance, what good would a “fast” motor be, if yours was a monster truck deployed to beat your neighbor on bicycle to a hill climb? Likewise, you what good would a “powerful” motor be, if you owned a road car and gunning for a drag race? In this article, I seek to impart to you a basic understanding of rc car motors and terminology so that you would be a more successful hobby-racer and rc part shopper.

 

Some of the key aspects for your consideration include:

Vehicle Scale Size
Is yours a 1/18, 1/16, 1/12, 1/10, or 1/8? If you are running a 1/18 or 1/16 vehicle, you would usually be using a 380-size spec motor. 1/12 vehicles would use a 540-size spec motor, while 1/10s would use either a 540 or the slightly larger, 550-size spec motor. Most 1/10 and 1/8 RC vehicle owners these days are turning to “brushless motors”, which due to a lower friction, and a capability to run at a high voltage, generate a lot more speed and torque.

Number of Turns
Most motors on the market would range from 6 to 27 turns. The lower the number of turns, the faster it can make your vehicle go, but the catch is lower torque – but this would not matter if yours is an on-road racing car as there is little roll-resistance in the surfaces you run on. The higher the number of turns, the more torque, but also less top-end speed. Crawlers, a popular kind of RC truck, specially adapted for obstacle climbing, even use motors with as high as 61 turns! They are no doubt extremely slow, but can climb practically anything! A 27 turn motor would probably only manage 20km/h at best, while a 12 turn motor can go over twice as fast, at 40-50km/h with a good LiPo battery. While choosing a motor for your on-road RC vehicle can be straightforward, you may wonder, what is the fastest motor you can get for your buggy, without sacrificing vital climbing torque – a key note is that all motors upwards of 9 turns have a decent amount of torque.

Electronic Speed Controller (ESC)
The ESC has an important role in commanding your motor on how to operate – fast, slow, forward or in reverse. It is able to control battery voltage input power curves for varying throttle effect, and also power cut-offs, to preserve the advanced LiPo batteries from going into total discharge. However, ESCs are also matched to the number of turns to the motor. Check the motor turns range supported by your ESC. In many cases you may need to purchase a new ESC to support your new motor. Mismatched ESCs can cause overheating and even explosions for your RC vehicle.

Popular Motors / ESCs
A current hot seller on all RC car and truck fronts is the Castle Creations “Mamba Monster” ESC, coupled with a Neu-Castle Brushless Motor. The Mamba Monster is able to manage up to 25.2 volts of battery power, three times of the popular 7.2 volt stick packs at over 85% efficiency, and channel them through to your steering and throttle servos, and generate 5-6 horsepower at the wheels – that’s close to thrice the power of a typical 3.5cc buggy engine! Having said that, such technology comes with a cost in the hundreds – as much as a race-spec car or truck kit.

About the author: Julian Wong, aged 26, married and self-employed actively trades stocks and forex, and runs several internet marketing programs. His favorite outdoor past-time is off-road RC cars, and he is a proud owner of a Kyosho Inferno and a HPI Savage X 4.6 – both running on Nitro. If you are interested in RC modification, RC videos, and RC racing, or want to be informed of coupon promotions and RC special deals online, do check out his link RC blog at https://hpisavagex46.wordpress.com