Jordan Valley RC Circuit - Part 1

The new Jordan Valley Radio Control Circult is located on Kolwoon Jordan Valley Playground Phase 2 where was reservoir and government landfill and being idle before. Few years ago, government approved to build a RC circuit there in order to promote leisure and culture activities and it was planned to open for public this year. Prior to the opening of it, 3Racing was invited by Hong Kong Racing Model Club to try and test the circult, finding if there any defects and shortcoming. SAKURA ZERO is honoured to be the first car racing on the new track.

The circult can be divided in several parts:

1. Outdoor Circuit: it regarded Macua circult as construction reference and is approximately 120m X 60m in area. The track is wide and flat, using low level corners which won't make severe damge to cars even crashing.

2. Indoor Circuit: it is smaller in area that is about 20m X 20m. It offers a good place for freshmen to practise before competition, also it acts as a small racetrack as well.

3. Indoor Pit: it is spacious and neat. There are 8 large tables and 4 medium size tables, which could accommodate maximum 40 people at the same time and each of the driver is offered 2 electric power supplies. With the adequate lighting in the pit, racing at night is no more a problem.

4. Auditorium and Driver Stand: it used velarium design with glass surroundings which allows sunshine in, making the stage more open and bright. Also, the distance between it and the track is about 4 meters, which provides better eyesight for drivers who always keep moving their heads when driving cars in other small circults in Hong Kong.

5. Other supplementary facilities: the circult was also equipped with other facilities like drinking machines, toilets and carpark, also with jogging pathway and children playground nearby.

Jordan Valley Radio Control Circult, is surrounded by mountains which provides natural ventilation and creates a cool environment for drivers, it definitely attracts RC fanatics crowd into it right after official opening.

The Revolution Process of Sakura Zero

The emergence of M05 led me to pick up my passion towards RC car, I start to drive car again . One day, I met my old friends in TC Radio Control Car Track, we chatted and discussed a lot about global tendency of the chassis development, new models published and the competitions held recently, the re-union evoked my great enthusiasm, I thought that it is not enough to be trendy, but lead the trend myself.


Mr. Tireman, who is my friend already for 20 years, he told me that he wanted to rebuild his 1/10 Touring Car, I originally wanted to upgrade the performance of the chassis body for him only, but after I worked on it for few weeks, I was surprised that the half of the chassis has been rebuilt. Then we talked about the TITC competition in Thailand, a thought suddenly appeared in my mind that I can innovate an original 1/10 Touring Car and combine it with Team Powers gear to participate in TITC competition.


Then we started to get involved in the development of the chassis structure, we focused on mixing the advantages and improving the defects of the present available cars in the market.


The appearance of LI-PO battery was definitely a turning point to the Radio Control Car Market. SUB C battery will be substituted and the new chassis has to suit and fit with LI-PO battery, the weight proportion issue therefore is the main point of the design project.


Because of the performance of Brushless motor, the durability of the differential was a key problem needed to improve. In order to upgrade the powerful motive force, the differential balls are increased from 6 to 8, from 8 to 10, and now 12, the increase in number of it is to maximize the contact points, so as to make the car move smoothly and steadily, the chance of spinning is also be lessened.


For the purpose of attaining traction control to increase the number of differential balls, it is inevitable to widen the diameter of differential pulley. However, the enlarged diameter will be against with low CG requirement. Regarding to this problem, we consulted different experts and asked for their opinions. One of them, Mr. Racing Wu gave me a wonderful idea that using differential rolls to replace traditional differential balls. Since the structure of the regular differential is basically the same with the thrust bearing and there is roll system in thrust bearing which also need to bear the gravity, we decided to test the rolls trying to apply it in differential.

This is the roll differential that we bought from the market

The elementary testing result was acceptable, but it needed certain time and money devoted to produce a real and applicable differential pulley to undergo a real test. I prefer to produce sample to test it, which made Mr. Racing Wu shocked and said I was crazy to do something that may just waste money. However, I insisted to do this so-called risky investment as I believe people never success without trial and error.

Sakura Zero Option Part- 7075 rear rolling differential system (RDSTM) 

The caructure and the differential part was almost completed after over several weeks continuously design revision and production, the next step was to test the car. Our colleague, Miss Ethel suggested to use deep pink which is shine and attractive to be the theme color of the car, this color wasn't ever used in the market. It is unique as people either like it or hate it, which may in turn create noise and bring wide discussion by RC fans.

We expected to sell it in Japan starting from April which is also the Sakura blooming season in Japan, so we determined to use “Sakura” as the name of our first touring car.

Sakura Zero New Option Parts

Sakura Zero released from April-2010 with Sakura Zero series option parts. But there still have some option parts of Sakura Zero still not release to the market and we would to introduce to you at once!

 1) Front One Way For Sakura Zero(SAK-59/PK)

To cater different user, we specially developed a front one way for Sakura Zero. Chasing for high speed or challenge of different tracks, you may need this new option parts.












2) Belt Tension Post For Sakura Zero(SAK-58/PK)

For improve the performance while car running, you should not miss this new option parts.

The belt tension post can makes the belt teeth mount tightly to the differential gear to avoid the belt come off. The acceleration of car can be improved by a stable 2 belt drive system.

This belt tension post also suitable for others carkit but end user should measure your assemble position before fabricate. For Sakura Zero, end user just need to assemble to the screw holes which already prepared on Sakura Zero original upper deck.




3) Dynamic Balance Station (DBS) - (SAK-015)

Before our website also has mentioned that the main develop point of Sakura Zero is weight balance. For weight balance of carkit, there should have some tool for helping you. We would like to introduce our new product, Dynamic Balance Station (DBS) - (SAK-015).

The Dynamic Balance Station (DBS) included a weight balance measurement.














The 2 pins of Dynamic Balance Station (DBS) is using for hunging the Sakura Zero. There has a hole prepared on the front and rear shock tower of Sakura Zero to match up this 2 pins.

Put the weight balance measurement horizontally or vertically for measure the weight balance. Place the weight balance measurement horizontally for measure the left and right weight balance and vertically for measure the front and rear weight balance. If the bubble of measurement is being center, then your carkit is on the perfect weight balance status.

And, we also decided to develop the shock tower for others carkit (e.g. shock tower for Tamiya 416 with holes) to match to use this Dymanic Balance Station (DBS). The new development of shock tower will make a hole on it for matching 2 pins of Dymanic Balance Station (DBS).
As the height of carkit are difference, we've designed 2 pins of Dymanic Balance Station can be adjustable. The position that indicated as below picture, it can be adjusting the height when you've hunged your carkit.
Once you've change your shock tower of your carkit series, anyone can be use this Dymanic Balance Station (DBS) to get the perfect weight balance of your carkit.

We'll update our blog after we've finished our development at once. Let's keep watching for our blog!

Sakura Zero Pre-order!!

3Racing the first 1:10 touring car accept pre-order now!

Sakura Zero will release on Apr-2010 and now is accepting pre-order! Customer who pre-order the Sakura Zero can be getting the Graphite Setup Board (#ST-014 / USD 89.74) for FREE GIFT!!!

Please check the below link for detials and pre-order form downloading:
http://os.3racing.hk/articles.php?articles_key=74


Sakura Zero Homepage:
http://www.3racing.hk/sakura-zero/english/

2010 New Motor Heatsink for Brushless Motor

We would to introduce our new products which developed on Jan-2010. The " Brushless Series " Heatsink - Brushless Motor Heatsink (with single/double cooling fan).

This new product is developed for 05 series motor. Different with all heatsink in the market, our new heatsink have a hole which can channelling the air into the heatsink for cooling down the surface of motor. And the rear cooling fan will lead the hot air of motor out at the same time. (Heatsink with double fan will have a front cooling fan to channelling more cold air into the hearsink and cool down the motor directly.) The operation of this new heatsink will make a single way of air floating to improve the cooling system.

For improving the cooling fan, we're not only focus on the shape design of heatsink. for the point of fixing the motor heatsink, we used the 3M heat dispersion tape. Using the feature of the heat dispersion tape for improving the cooling system and can be make the heatsink more lightly.

The connenting code of cooling fan has already hid inside the hearsink and we've released 5 colors for choosing.

3RAC-MHS010/PK - Aluminium Brushless 540 Motor Heatsink -Twin W/ Cooling Fan

3RAC-MHS010/PK - Aluminium Brushless 540 Motor Heatsink -Twin W/ Cooling Fan

TITC 2010 - ROUND 2

TITC 2010 already finished last week. We didn't win any race in TITC but we're still happy that the result of Sakura Zero was out of our anticipation! Let's see our photos and video in TITC 2010!!

TITC 2010 Photos
http://picasaweb.google.com/3racing/SakuraZero3RACINXTEAMPOWERSInTITC2010#

Sakura Zero race in TITC 2010 - B main race, Racer: Mr. Fan Kai
http://www.youtube.com/user/threeracing#p/u/0/pHYm-qwgh7Q

2010 TITC - ROUND 1

We have an advantisment on March-2010 of RC Magainze and RC World that announced our Sakura Zero will join the TITC 2010. As TITC is a big RC race competition  in the world, we didn't expect we can be win in TITC. But we're very happy that we got a well result which is over our anticipation!!