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1/10 Scale Nitro Rally/Touring Car:

CEN Zoom-10 Nitro (Radio Controlled Model Review)


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History, Info (and How To Set-up Tips) for the Zoom-10:


  Introduced by CEN in 2012, the Zoom 10 Nitro was available with a number of bodyshell options, originally in 2012 including the Mazda RX7 - # 10021, Dodge Viper - # 10022, Subaru WRX - # 10023, BMW M3 - # 10024 and Shelby Mustang GT350 - # 10025.

  The original 2012 4WD model, is belt driven, on a 3mm alloy chassis, with a 2 speed transmission system, gear differentials, coil spring over oil filled dampers and a 3.0cc nitro engine.

  A redesigned shaft driven version of the Zoom 10 Nitro was introduced around a year later - # 10021 - based on an alloy plate chassis, with gear type differentials, high performance coil spring over oil filled dampers and a 3.0cc nitro engine.

CEN Zoom-10 Nitro - 1:10 On Road Car
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  To race the CEN Zoom-10, it has to have the best settings for your driving style and provide you with excellent handling and stability. The smallest changes can make a huge difference in the way your car performs on the track and our comprehensive instructions will help you to find the best Set-up to get you where you want to be.

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★ CEN Zoom-10 Nitro - Shaft Driven Chassis ★
CEN Zoom-10 Nitro - Shaft Driven Chassis

★ CEN Zoom-10 Nitro - Shaft Driven Chassis ★
CEN Zoom-10 Nitro - Shaft Driven Chassis


Buying a Used CEN Zoom-10
Touring Car (and What to look for)


   Buying a used CEN Zoom-10 Nitro Touring Car, or any used RC Model, has a number of advantages. It is generally cheaper than new, ready built and may come with a variety of expensive hop-ups already installed. Cheap, pre-loved bargains are always becoming available. However, depending on the age of your purchase, it may need a little tender loving care before you can take it out on the road.

   The one thing you will always need is an instruction manual. If not supplied with your purchase, they can often be downloaded from the CEN website, or purchased separately on eBay. With an instruction manual, any problems with your model Touring Car you may discover can easily be fixed.

Dampers
   When you receive your used CEN Touring Car, make a general visual inspection of the chassis, front and rear wishbones, suspension shock towers etc, for any broken parts that may need to be replaced. Then, take a screwdriver and box spanner and check each self tapping screw and nut for security, taking care not to over tighten.

   Next, for those CEN models with oil filled shock absorbers, remove them from the chassis and dismantle the coil springs. The damper shafts should push in and pull out with a smooth action. If you feel a jolt as you change direction, this means the oil has leaked out and must be topped up. At the same time, change the O-Ring seals to prevent more leakage. Also check the damper shafts for damage. If they are scratched, change them as soon as possible.

   If the body shell of your CEN Zoom-10 is broken, ripped or damaged in any way, this can be easily repaired with rubber solution glue. Also, for added protection and if available for your Zoom-10 model, fit an under guard to stop dirt and gravel entering the chassis.

Titanium Turnbuckles
   Examine the drive shafts for wear and replace as required. If possible, change them for titanium. The steel shafts wear and bend too easily.

   If you intend to race your Zoom-10 Touring Car model at a competitive level, I would also recommend you obtain and fit titanium pivot shafts, turnbuckles, tie rods and steering rods.

   Drive Belts need checking at regular intervals for wear, tension and damage. If deemed necessary, adjust the tensioning pulley until the belt can be depressed in the centre by no more than around 5mm. If the belt was slack, also examine the drive pulleys for wear. The teeth should provide a well seated fit for the belt teeth and not be rounded on the corners. If the belt teeth do not fit snugly, change the pulleys as soon as possible. For top level racing it may be prudent to replace all belts and pulleys after each race meeting.

Spur Gears
   Gears are a weakness on all Touring Car RC models. Head on collisions can easily damage the gear teeth on nylon and plastic spur gears. Heavy impacts can also loosen the nuts or self tapping screws that hold the Nitro Engine in Position, allowing the pinion gear to pull out of mesh slightly and rip the tops off the teeth on your spur gear. To minimise this possibility, fit bolts with locking nuts to the Nitro Engine mount and remember to check them for security after every two or three runs.

   Ball joints always cause problems. For top level Nitro Touring Car racing, the plastic ball connectors should be checked and if deemed necessary changed after every meeting. A simple thing like a loose fitting connector popping off could easily end your race, so better safe than sorry.

Servo Gears
   The Zoom-10 steering servo is also prone to damage. In high speed crash situations, the fragile gear teeth of the servo can be broken off, rendering your expensive servo useless, so be sure to obtain a good quality "Servo Saver". Check out my Servo Information article.

   If body roll on your CEN Zoom-10 is a problem, handling can be improved with the use of stabilizers, anti roll or sway bars, stiffer tuning springs and, or, thicker silicone oil in the dampers.

Ball Bearings
   If your used CEN Touring Car comes with plastic and sintered brass bushings (ring type bearings), check the shafts that run in them for wear. Dust and grit can get into these bearings and abrade the shafts. Therefore, you should replace them all with shielded ball bearings. If the model has been run with ring type bearings, you may have to change all the axles and driveshafts. For more information, take a look at my article, How to get the best from your Bearings.

   Finally, good luck with your Zoom-10 model and good racing.




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Or, check out our RC Model Car Setup Guide


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Manufacturers and Brands Catalogued and Listed by RC-Scrapyard.


   At present, the RC Model Manufacturers, Brands and Distributors covered by us are: ABC Hobby, Academy, Acme Racing, Agama Racing, Amewi, Ansmann Racing, ARRMA, Team Associated, Atomic RC, Axial, AYK, Bolink, BSD Racing, Capricorn, Carisma, Carson, Caster Racing, Cen, Corally, Custom Works, Durango, Duratrax, ECX - Electrix, Exceed RC, FG Modellsport, FS-Racing, FTX, Fujimi, Gmade, GS-Racing, Harm, HBX, Helion, Heng Long, Himoto Racing, Hirobo, Hitari, Hobao, Hong-Nor, Hot Bodies, HPI, HSP, Intech, Integy, Jamara, JQ Products, Kawada, Kyosho, Losi, LRP, Maisto, Mardave, Marui, Maverick, MCD Racing, Megatech, Mugen, New Bright, Nichimo, Nikko, Nkok, Ofna, Pro-Pulse, Protech, PTI, RC4WD, Redcat Racing, RJ-Speed, Robitronic, Schumacher, Seben, Serpent, Smartech, Sportwerks, Step-Up, Tamiya, Team-C Racing, Team Magic, Thunder Tiger, Tomy, Top Racing, Traxxas, Trinity, Tyco, Vaterra RC, Venom, VRX Racing, WLToys, X-Factory, Xmods, Xpress, Xray, XTM, Yankee RC, Yokomo, ZD Racing and Zipzaps.

   This is an ongoing project, with new and "lost in time" RC Model Brands being added as they are found and although most of those listed above have been covered in relative detail, some are still being researched and will be completed in the near future.





















CEN Zoom-10 Nitro - Original Belt Driven
CEN Zoom-10 Nitro - Chassis


Hints and Tips

Camber

   Camber is described as the angle of the wheel as you look at it directly from the front or rear of your car and if set correctly will improve your cars cornering ability considerably, by providing increased traction. This simple to make adjustment is considered by many to be one of the most effective changes you can make to your car for better handling.

   Positive Camber is when the top of the wheel is angled outwards. Negative Camber has the top of the wheel angled inwards.

   First of all, get yourself a good camber gauge. All adjustments to your cars camber setting should be made with the car in race mode that means the motor, battery etc in position in the chassis.

   To check the angle of an On Road car, it must have the ride height already set to around 5mm. Place the car on a perfectly flat surface, position your camber gauge against the side of the wheel you are checking and take the camber angle, normally this is between -1 and -3 degrees negative. Next, put a small 1mm thick piece of card under that corner of the car and push the corner down until it touches the card. In this position, check the angle again. It should be between 0 and -0.5 degrees negative camber. If not, pick up the car and put it back down on the flat surface, check and make adjustments, using the turnbuckle, that you consider are needed to achieve your goal. Keep checking and adjusting and repeat for all four corners. What you are aiming for is an angle that will provide your car with the maximum amount of rubber on the track on high speed corners.

   Off Road cars can be adjusted in a similar manner to that described previously, with the ride height set at around 20mm, but in place of the card, use a small booklet or something around 5mm thick. The optimal camber setting is a little more difficult to find for off road cars and depends generally of the track surface you are racing on. Slippery tracks generally require less camber because of reduced suspension movement when cornering, whereas high grip tracks require more camber to compensate for inertial induced body-roll. Depending on the particular model, this setting can be anything between -1 and -5 degrees sometimes more. Check your model manual for details.

   Be aware that for all model types, too much negative camber can reduce straight line traction, but with a good setting for any particular track, the advantage it gives, that of vastly improved cornering stability, far outweigh any negative effects.

   For beginners, this setting is by far the easiest to experiment with. Just take the car out on the back yard and with a few simple turns of a turnbuckle you will soon learn just what difference a small change in your cars setup can do to change its handling ability. Good luck and good racing.

For More Setup Information check out my Hints and Tips page.







Hints and Tips

Bearing Seals

   If you were to ask anyone with a modicum of experience in RC, they will tell you that the best modification you can make to a basic RC model, is to add a set of ball bearings.

   Quite a few of the entrance level models at the time this article was written, come with plastic and sintered brass bushings (ring type bearings). If these bearings are installed in the model and coated with grease as advised in the car manual, dust and grit can be caught in that grease and be dragged into the bearing where it can abrade the shaft that spins in it and it won't be long before it becomes a very sloppy fit, causing all kinds of problems.

   But what should you look for when buying bearings? There are a number of types of seal used on ball bearings and there is much debate concerning which is the best for RC.

   Rubber and Cork bearing shields are two of the more common types available, but although they are very effective when it comes to preventing dust and grit entering the bearing, they also create more drag in the bearing due them rubbing against the bearing to create friction. For this reason, if I wanted to race my model at any level and that model was fitted out with rubber or cork shielded bearings, I would change them ASAP.

   Steel and Teflon bearing shields may not be as effective as the rubber shielded versions, but they don't rub on the bearing, so little or no friction is created. The problem with this kind of bearing of course is that they need much more maintenance and are often more expensive.

   Basic shop bought bearings generally come packed with grease for their lubrication. However, if you want to have your bearings spin freely; grease is not the best thing to use. So, before you install your new bearings in your car, the first thing you need to do is clean out the grease with something like isopropanol and replace with thin oil.

For More Setup Information check out my Hints and Tips page.










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