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Details about  AUTO-SPEED TRANSMISSION RC Racing Touring Car 2 two 3

AUTO-SPEED TRANSMISSION RC Racing Touring Car 2 two 3

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Hi~iQ Telecom Ltd

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More than 10 available / 13 sold
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US $131.99
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Last updated on  Feb 20, 2014 23:01:06 PST  View all revisions

Item specifics

New: A brand-new, unused, unopened, undamaged item (including handmade items). See the seller's listing ... Read moreabout the condition


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Toy RC

Hi~iQ Telecom Ltd

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eRacingPro Third Generation Automatic Transmission

Two Speed? thats outdated... Three Speed? Thats OOOOLD, MAN.
Introducing eRacingPro's  Third Generation Automatic
Once again, this changes everything in RC.





eRacingPro AutoTran
Compatible with
Associated RC10 Tc3 Tc4 Tc5 B4 T4
B44 XXXT, E-maxx, 05, 540, 550 and brushless motors and many other Racing/ Touring Car



This auction is for one eRacingPro AutoTran. This is a third generation transmission developed by our engineers. It features a complete redesign  that will outclass the previous versions.  New features include: Automatic Gear Ratio, Reverse Mode, Pre-assembled Tranny, Zero Maintenance and Brushless Integration. (see Feature section for details.) This Gear Box is specially designed for 1:10 RC Cars / Trucks. It comes with an instruction manual and all spare parts. It is compatible with any 1:8, 1:10, and 1:12 and brushless motors with a 1/8 inch shaft.

eRacingPro AutoTran is driven by a patent-pending advanced gearing system. Its unique design will dramatically improves BOTH the top speed and acceleration of your ride. The automatic gear ratio will lead professional racers like yourself to victory by allowing you to have more control entering sharp corners, necessary acceleration after exiting a turn, and competitive edges on reaching maximum speed on straight track.

With the gear ratio shifting dynamically on the fly to reduce loads of the motor to a minimum level, your ride will consume less power and stay on track for a longer period. In addition, it will prolong the lives of your motor and ESC. This is a perfect device for racers who want to reach the highest performance and beyond.

Installation and Rational:

The above animation is played in slow motion.
The time required to start from rest to maximum speed is approximately 1 second.


As we all know, choosing between acceleration and top speed is a dilemma. With a smaller pinion gear and a bigger spur gear we have higher acceleration. On the other hand if we have a bigger pinion gear and a smaller spur gear, top speed will increase. Unfortunately we can never have both of them at the same time. However, it is now possible with the advanced gearing system of the eRacingPro AutoTran. All you need to do is select your favorite setting for top speed (big pinion and small spur gear) and the AutoTran will handle the acceleration for you.

We can divide the process of the AutoTran into 2 parts. The first part is to overcome the *static friction barrier. In this part the AutoTran will decreases the RPM (revolution per minute) of the pinion gear with the dynamic gear ratio so the big pinion gear you swapped in earlier will act like it is a small one. This ratio between the pinion gear and motor ranges from 1:400 to 1:4 and it will increase the torque and reduces the load on the ESC and the motor to gives your ride a jump start. This process takes around half of a second.

 *static friction: when an object is not in motion, it's friction with the ground is greater. Thus, more energy is required to accelerate the object.

After your ride has gain enough momentum, the AutoTran will quickly change the gear ratio between pinion and motor from 1:4 to 1:1. When the gear ratio is at 1:1, the motor will output directly to the pinion gear and this is when your ride reaches maximum speed. This process will take another half of second. During quick turns and sharp corners, the AutoTran will adjust its gear ratio so you will gain stability and when you exit, it will quickly pull the ratio back to 1:1 so you can say "EAT MY DUST!!" to your competitors.


AutoTran with the Team Orion Vortex Brushless Motor
(motor not included in this auction)



Dimension Ψ36.5 X 21mm
Weight 80G
Gear Ratio (Low speed) 1: x (dynamic)
Gear Ratio (High speed) 1 : 1
Operation Forward, Reverse, Brake

- Automatic Gear Ratio: An optimal Gear Ratio will be selected automatically. Factors include velocity of vehicle, road condition, motor output and etc.
- Reverse Mode: Users of previous generation of two (or three) speed transmission will know that reverse is disabled due to the gear mechanism. With this new generation, Reverse IS BUILT-IN. Yes, reverse has Auto Gear Ratio. No, you do not need another set of gears to go reverse.
- Pre-assembled Tranny
: The transmission is pre-assembled and installation is a breeze.
- Zero Maintenance: After the initial grease application, you can basically forget you have a transmission installed.
- Brushless Integration: This transmission is compatible with any motor that has a 1/8 inch shaft
-Torque and performance are improved with the advanced gearing system. A lower Power consumption results in a longer run time.
-Direct power transmission during high speed reduces friction between gears. Your car will have a higher top-speed on straight tracks and more handling in sharp corners

*It is recommend to break-in for 30 minutes on initial use.


Terms & Conditions
Bidding this auction means that you agree with the following terms & conditions.
All pictures and descriptions are subjected to change without notice. Items may not look exactly the same as the auction shown. We are not responsible for any inadvertent errors.


Total payment = winning price + shipping & handling

Insufficient payment will be charge extra US$0.50 to compensate the Paypal penalty fees.


Total shipping = Base S&H + Combine S&H ( for each additional item )
a) Base S&H is the highest shipping cost of the first item. 

1. Combine shipments are only available on the condition of a SINGLE PAYMENT. Auctions that are paid separately will NOT be shipped in combo and therefore, they are not qualified for shipping discounts.

2. We ship within 2 working days after payment is received and confirmed. Please allow up to 5-10 BUSINESS DAYS for item(s) with a physical address sending to the 48 states of United States & Canada. For international bidders, the shipping time varies with respect to your location.

3. Bounce backs due to incorrect shipping address will result in setback on deliveries. It is the buyer's responsibility to repay the shipping & handling fees.

4. We are not responsible for any loses or damages resulting from shipping.

Return & Refund Policy
  1. No refunds after 30 days
  2. Shipping & handling & other service fees are NOT refundable
  3. All returned items must be in original packing.
  4. Items that are used/ damaged/ deformed or altered in any ways will not be accepted.
  5. A 20% restocking fee will be charged on all refunded items.

  1. E-mails are usually answered within 2~3 business days in priority order.
  2. Spams and mass e-mailing will be deleted without slightest glance.
  3. E-mails with virus or anything subjected to hacking are automatically deleted.

Questions and answers about this item

No questions or answers have been posted about this item.

Seller assumes all responsibility for this listing.

Shipping and handling

Item location: United States
Shipping to: Worldwide
Excludes: Cook Islands, Italy, Hong Kong, Indonesia, Taiwan, China

Return policy

After receiving the item, contact seller within
Refund will be given as
Return shipping
30 days
Money back
Buyer pays return shipping
Return policy details
1. No refunds after 30 days. 2. Shipping & handling & other service fees are NOT refundable. 3. All returned items must be in original packing. 4. Items that are used/ damaged/ deformed or altered in any ways will not be accepted. 5. A 20% restocking fee will be charged on all refunded items.

Payment details

Payment method Preferred / Accepted  
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Seller's payment instructions

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