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RCScrapyard Radio Controlled Models
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1/10 Scale Nitro Rally/Touring Car:

Hong-Nor CD3 (Radio Controlled Model Review)


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History, Info (and How To Set-up Tips) for the CD3:


  Manufactured by Hong Nor in 2004, the 4WD CD3 Touring Car, is shaft driven, on an alloy plate chassis, with gear type differentials, coil spring over oil filled dampers, rear dogbones, with front CVA universal joint drive-shafts and a full set of ball bearings.

  The model was distributed in the USA by Ofna Racing.

Hong-Nor CD3 - 1:10 Nitro Touring Car
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  To race the Hong Nor CD3, it needs to be tuned to perfection for better stability, precise steering and provide enough grip to keep you on the track when going around tight bends at high speed. Even the smallest adjustment can change the feel of a car and our simple to follow instructions will guide you to the best Set-up to get you to the front and keep you there.

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★ Hong Nor CD3 Chassis ★
Hong Nor CD3 Chassis

★ Hong Nor CD3 Chassis ★
Hong Nor CD3 Chassis


Buying a Used Hong Nor CD3
Touring Car (and What to look for)


   Buying a used Hong Nor CD3 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 Hong Nor 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 Hong Nor 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 Hong Nor 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 Hong Nor CD3 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 CD3 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 CD3 Touring Car model at a competitive level, I would also recommend you obtain and fit titanium pivot shafts, turnbuckles, tie rods and steering rods.

   The gearbox of your used Touring Car should be opened up to check for gear wear and lubrication. A thin coat of grease is often used on internal gears and although this is fine for basic running around on the road, if you intend to race your Touring Car at a higher level, this should be removed and replaced with racing oil (ZX1 or Teflon Oil). Of course, this should be reapplied 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 CD3 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 Hong Nor CD3 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 Hong Nor 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 CD3 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.


















Hints and Tips

On Road Drifting

   Drifting is the greatest fun you can have on four wheels, but it isn't as easy as it might look. There are lots of different methods and ideas on how it should be done and it takes lots of practice to get it right.

   On the street or in the parking lot, drifting is fine, but until you have had hours and hours of practice to master the technique, don't try it on your local race track. If you don't have the total control of your car, you will not make many friends amongst your immediate competitors.

   Controlled Drifting is a beautiful thing when done correctly and in this article I will endeavour to give you a few pointers on where to start. After that, your own personal style will soon blossom.

   As I mentioned before, there are a number of different ideas about drifting, but basically this is what you do.

   Consider a 180 degree turn. Enter the corner at speed, start to turn a little sooner than you might, then just before the apex, touch the breaks for a split second, enough to break the rear of the car free as you enter to turn. When the car begins to slide sideways, steer into the slide, increase the throttle, just enough to balance the car as it drifts around the turn. Coming out of the corner, steer the car straight and apply full throttle.

   Often referred to as a power slide, drifting is much more fun than the basic "Rounding" style, described in a previous article, but also takes more skill, not just in its execution, but in car set-up.

   A little "body-roll" is the thing to aim for when setting up a drifting car, but be careful. With too much body-roll, the car will be difficult to control and tumble sideways off the track. Too little and the weight transfer to the leading wheels will not be enough to induce the slide. A lot of trial and error, with tuning springs, damper oil, damper pistons, stabilisers, tires and inserts is required to get your car as you want it, but believe me, if you can get it right, it will be well worth all your effort.

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







Hints and Tips

Glow Plugs

   Nitro Engines for RC Models, use a system to ignite the fuel mixture, that simply employs a wire coil in a small housing called a Glow Plug. To start the engine, a battery powered Starter, or Glow Igniter is connected to the Glow Plug and electric current heats the coil to white hot, so that when you pull start your engine, the air - fuel mixture in the cylinder is ignited. With the engine now running, the starter is no longer required. Heat generated under compression is enough to keep the coil element hot enough to keep the engine running.

   At some point, the Glow Plug originally supplied with your Engine will invariably burn out, so you will have to purchase a replacement. If your engine isn't too old you should be able to obtain a similar one, but if the manufacturer is no longer in business you may have a problem.
   If you still have the instruction book that came with your engine you may find there are a number of optional plugs available. Most Plugs generally have a code, indicating the plug elements effective operating temperature. These codes vary from manufacturer to manufacturer so be wary if you need to consider a plug from a different Manufacturer than that of your engine.

   Basically, Smaller engines run better with Hot Plugs and Larger engines prefer Cold.
   Nitro fuels for RC engines normally have between 10 to 40 percent Nitromethane (CH3NO2). If you use fuel with a high proportion of Nitro, err towards Cold Plugs. Less Nitro, Hot.

   For example, For a .12ci (2.1cc) Nitro Engine, burning High percentage nitro fuel, a mid range plug would be best for performance.
   While a .21ci (3.5cc) Engine, with Low percentage nitro fuel, would prefer a Hot Plug.

   One more thing you may at some point consider when determining the right plug, is the compression ratio of your engine.
   By removing one of the Head shims you can Increase the compression. More shims, Lower compression. This option is not something I would recommend to those with little knowledge, so if you want to try this please be sure to ask someone with more experience before risking your expensive engine.
   High compression ratio engines run better with Cold Plugs. Conversely, Low compression ratio engines need Hot Plugs.

   If for some reason you use the wrong plug, you will soon know by how the engine runs. With too Hot a Plug, the engine will overheat and could damage your engine. If you hear the engine miss fire at high revs and you see pit marks on the cylinder head and piston, try either a cooler plug, add a shim to the head, or lower percentage Nitro fuel.

   If your Plug is too cold, your engine will idle poorly, lose acceleration and top speed. You will also notice the smell of fuel from the tail pipe. However, be wary, this could also be because of a rich fuel mixture.

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










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