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Preparation of the MR03 Chassis for competitions LEVEL 2

Once our Kyosho Mini-Z MR03 has the option parts that allow us to take it to the level of perfection that we wish  (parts recomended in Level 1), it´s time to consider starting to compete with our little racing car. By competing we mean, either against other drivers or against the chronometer. 
It´s evident that, as easy as all of this Mini-z stuff might seem, without some good training sessions to let us get used to our machine plus a minimum of option parts that help us to improve the on track performance of the car, the possibilities of competing with our Mini Z won´t be feasible.
To continue with the option part process of our Mini-Z, with a focus on competing, would should bank on the following: 
1-      The durability of key parts of the car. We must be sure that nothing´s going to break during the race. 
2-      The possibility of making constant improvements to the set up of the car and the use of option parts  that enable us to increase the number of adjustments and settings. 
So therefore, in this second level of preparation of the Mini-Z MR03, we will mount parts that have a dual purpose; on the one hand they make certain sections of the car more robust, and on the other hand they help to improve the performance of the race car on track. 
Just as we did in Level 1 we´ll go section by section. In this case, the first two parts that we suggest make up part of a group of option parts whose function is to reinforce the MR03 chassis. 
1 – Mini-Z MR03 steering arm (Ref. MR3032S)
Installing this option part on our car will give us many possibilities. To start with, the steering will be made more robust and will avoid breakages following knocks and collisions. These steering arms that we propose also give us the possibility of lowering the chassis height on the front assembly and thus the lowering of the car´s center of gravity (greater velocity when taking curves and lower risk of flipping over). Moreover we´ll be able to access the  King Pin (the axle that the arm passes through) and lubricate it from the inside of the arm (you can see the cross section of the center of the steering arm).
Furthermore, the nylon housing that incorporates the steering arm that the sterring arms slide through, reduces the friction between the arm and the axle and smoothens the movement of the front assembly suspension.
As you can observe, on the MR03 chassis, when we press down on the front suspension, we alter the angle of incidence on the wheels against the floor (we call this effect a camber or fall).
2 –  Steering rod for the Mini-Z MR03 (Ref. MR3019S)
Once we have replaced the steering arms on our chassis, we must also change the steering rod. Apart from the advantages that the aluminium rod offers us, substituting the original plastic rod for an aluminium one is a good option because it´s not adviseable for the small pins of the arms to exert force against the plastic orofices of the rod (on impact, the plastic orofices of the steering rod are always what take the brunt of it).  
In addition to its sturdiness, with an optional steering rod we can also modify the car´s geometry. If you take a good look, the steering rods of the MR03 are divided into to narrow and wide ones and have different degrees of convergence (toe in) and divergence (toe out) with respect to the direction of movement. 
The car body used will «oblige» us to assemble a long or narrow type rod. In any regard, selecting a divergent or convergent rod will modify the performance and stability of our Mini-Z. 
If what we want is stable and accurate steering, especially on straight lines, we use divergent steering rods; the greater the divergence, the greater the stability. However, at the same time, we´ll lose speed on curve entry. If on the contrary, our car is already stable enough on straights, we can mount steering bars with different degrees of convergence. Converging bars will make our cars become more agitated, unstable on straights (the car trajectory will have to be continuously corrected), but much faster on curve entry.
Once we´ve decided to start competing and make full use of our chassis, we´ll have to have some option parts at our disposal that give us more control over certain sections of the car. At Level 1 we exchanged the original plastic suspension plates for fiber ones.  You´ll notice that when these swing laterally, they quickly and freely return to their original position and with greater or lesser force, depending on the hardness of the plate. Such a quick return can cause the bouncing of the rear assembly and as a result, a loss of grip. 
The friction of the suspension discs helps us to dampen the momentum in the torsion of these fiber T plates, thus diminishing the swing motion of the rear axle.  
By using this suspension kit we´re able to adjust the friction force of the discs (assembling springs of varying hardness) and subsequently the speed of the lateral torsion of the rear assembly. 
To achieve optimum tact on the rear assembly we can play a little with the hardness of the suspension (T) plates as well as the hardness of the suspension springs for whatever surface we may be competing on. 
4 – Motor mount  94 and 98 (Ref. MR2295S)
The motor mount is one of the vital elements of our list of option parts for our Kyosho Mini-Z. One of the advantages of the MR03, from our point of view, if the rear section of our chassis is identical to its predecessor, the MR02. Therefore all the parts that we used on our MR02 can also be used on the  MR03, including the disc suspension. 
The motor mount basically has two functions;  make the rear assembly more robust, and facilitate the fixture of the motor to the chassis. Using these  motor mounts, the micro adjustment between the motor pinion and the crown  of the differential is totally accurate and easily carried out. Other characteristics that these motor mounts (available in aluminium) offer us are:
  • The option of adjusting the height of the arm that supports the friction discs. 
  • The option of raising or lowering the rear axle through the accesories that come with the motor mount, with which we can further adjust the height of the car. 
  • The motor acts directly on the mount, meaning that, in addition to reducing the weight of the entire assembly, the metal on metal contact helps to dissipate the temperature of the motor. Furthermore, the fact that the motor runs «free» only on one side and without any type of encasement, it´ll be a good idea to refrigerate it. 
  • Strictly speaking, the motor mount, allows us to use both 94mm car bodies as well as those with a 98mm wheelbase, provided that they are in MM (Medium Motor) position.    
5 – Pn Racing Speedy Motor 07 (Ref.111550)
In order to start competing with our Mini-Z we clearly need to mount a motor with greater performance. The stock motor that comes with the original Mini-Zs are ok to start off with, but they lack some vital characteristics for competitions.
A motor like the one that we propose in this section can be set up on optional motor mounts (it includes holes in the front especially for this purpose), we can also replace the carbon brushes when they become worn without having to change the entire motor. 
The fact that it carries bearings also helps to reduce the energy consumption of the battery and extend the life of the motor. A motor with these characteristics, for use on the original stock electronics, provide us with a performace efficiency that is much greater than the original motor. We have great top speed and take off speed. 
Another advantage is that with the use of this type of motor , once we decide to modify the electronics (assembling multi FET systems) we can still use the same motor with the resulting increase in performance. 
We recommend the use of this type of motor, multifaceted, that can be used with original as well as modified electronics. 
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PN Racing launches a new bracket for the suspension «T»

This new retaining flange is made of worked aluminium and incorporates two countersinks and grooves for holding the chassis in place. The set also incorporates the necessary screws with plastic configuration. All of these features reduce the movement in the rear track of  this new and exciting Mini-Z MR03 by Kyosho.  The assembly instructions are very simple; the flap has two positions, but it also can be mounted using two additional positions which is what makes it compatible for use on Mini-Z 94mm, 98mm and 102mm cars.  As you can observe in the graph, with this part you can set up 3 different configurations. It´s also worthwhile to note that the aluminium plate is designed so that the screw can enter perfectly into the aluminium without pertruding and therefore does not interfere with the carbon or fiber «T».

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Secrets of the Kyosho Mini-Z MR03

Thanks to the collaboration of Pemar Model, importer of Kyosho products for Spain and for Kyosho Japan we have found out that product samples have been sent for testing. We´ll be able to see first hand some of those features that amaze us so much about this new Mini-Z chassis.

In the meantime you can take a look at some of  these photos of the chassis and you may also like to know that at this very moment, an explanatory film about the car is being shot so that you can uncover its best kept secrets.

In this next video that will be published on our  Mini-Z Channel, David Moret shows us the similarities and differences with its predecessor, mini-Z MR02.  As far as the optional components, its compatibility with optional parts of different manufacturers, as with its technical characteristics and electronic devices,  are compatible with these new electronics. We can also tell you in advance that for those who have the giroscope by dNaNo, you can install it on your Mini-z just like the plug and play model.

Our hope is that you may watch this next video with the same excitement as we did and we invite you to make use of our forum to ask any questions that you may have about the chassis.  Mini-Z MR03 Forum






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The trpscale Renault Megane car body will be accepted in the ATM World Cup

As some of you are already well aware, this car body, in combination with the MR02 MM 94 mm chassis  has been producing some very good results. For this reason ATOMIC has decided to incorporate this car body, along with the Kyosho bodies, in this championship.  

TRP Technical Racing Products, will be present at the super final in November as one of the sponsors of the race and will be participating in it via a stand in the parc fermé of the final.

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New dNaNo car bodies by Kyosho

p8250662.jpgToday in Japan the new versions of the Kyosho dNaNo Porsche GT3 went on sale. Amongst the different models we can see the new silver car body as well as its version in white for painting.  We predict that these novelties will reach Spain within a few months, considering that here things tend to move a little slower.

We´ll just have to wait and see.

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New dNaNo tires from PN Racing

We have jsut received some new tires for the Kyosho dNaNo. This time they come in two different molds to be used both front as well as rear wheels with the most appropriate thicknesses.

Available References:

Front Tires:
DF8808 hardness 45g
DF8815 hardness 55g
DF8820 hardness 65g

Rear tires:
DR8808 hardness 8g
DR8815 hardness 15g
DR8820 hardness 20g

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Results of MiniZ Endurance series 2009



Gen  Proto  GT’s  Team  Laps 
 1  1    ATOMIC  2907v 
 2  2    PN RACING  2895v
 3    1   NIPPON OLD TRACK  2802v
 4    2  MODEL VIGO  2744v
 5  3    RCPBM  2714v
 6    3  D.CARMEN – 1  2679v
 7    4  AUTO Z  2621v
 8    5  REFLEX RACING  2590v
 9  4    TRP FRANCE  2555v
 10    6  VELI Z  2422v
 11    7  TRP GERMANY  2401v
 12  5    TEAM BOMBA  2301v
 13    8  SAM’Z  2249v
 14    9  D.CARMEN – 2  2229v

Prize for the best PN RACING paint job.

Throughout the week we will be publishing photos in the image gallery.

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Timetables and Accommodation at the MiniZ Endurance Series


15:00 – Open track. Beginning of open training session. Only one car per team, one driver per team. Authorised car bodies and chasses only. 18:00 – Beginning of groups of timed training sessions20:00 – End of groups of timed training sessions.21:00 – Welcome dinner

08:00 – Team pick-up from hotel

09:00 – Presentation of participating teams.10:00 – Driver’s meeting.10:30 – Open track, warm-up training sessions11:00 – Start of the Mini-Z Endurance Series 

23:00 – End of race and prize-giving. Return to the hotel.



09:00 – Pick-up from hotel. Surprise visit relating to endurance races.
15:00 – End of visit, return to hotel.


LOCATION OF THE RACE As we explained previously, the two previous editions of the Mini-Z endurance series were held inside commercial centres. In addition to finding an unbeatable location and first class equipment for performing our hobby, we were able to bring the Mini-Z to a numerous group of spectators congregated in the commercial centre.  Therefore, in this next edition, the chosen location will be one of the main attractions of the race. The race will be held at the Parc Vallés, a recreational centre located in Terrassa; some 20km from the city of Barcelona.  Could you just imagine what the weekend will be like at the Parc Vallés? An exclusively recreational centre, full of restaurants, game rooms, discos and cinemas and free parking? I can tell you in advance that this race will be held in front of a large audience! Thanks to the close collaboration with the Parc Vallés, the participants of the race will benefit from interesting sales and discounts not to mention a wide offer of cuisine.  
Avenida Téxtil S/N  –  08223 Terrassa (Bcn)


The base hotel where all teams will meet, is very close to the recreational complex and thus all trips between the hotel and the track will not require the use of transport vehicles. 
There will be a reduced rate at the Hotel Terrassa Park *** for all participating teams, which is one of the facilities that the race organisers will offer the members of each team.  HOTEL TERRASSA PARK
Avenida Santa Eulalia, 236  –  08223 Terrassa (Bcn)