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1/10 Scale Nitro Rally/Touring Car:

HPI Nitro RS4 3 Evo+ (Radio Controlled Model)


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History, Info (and How To Set-up Tips) for the HPI RS4 3 Evo+:


  Originally introduced by HPI (Hobby Products International) in 2007, the 4WD Nitro RS4 RTR 3 Evo Plus Touring Car factory assembled Chassis, came with a number of upgrades, a Nitro Star T3.0 engine and HPI radio system. The chassis available with a number of bodyshell options: # 10050 - Honda NSX GT, # 10051 - Nissan Greddy 350Z, # 10052 - Ford '66 Mustang GT, # 10053 - Plymouth AAR 'Cuda, # 10054 - 1967 Chevrolet Corvette, # 10075 / # 10076 - Fujitsubo HPI Impreza.

  In 2013, an upgraded Nitro RS4 3 Evo Plus was introduced with a 2.4Ghz radio system and two new bodyshell options: # 105944 - BMW M3, # 105942 - Porsche 911 GT3.

  The HPI Racing model was shaft driven, on an alloy plate chassis, with gear type differentials, coil spring over oil filled dampers, dogbone drive-shafts, 2-Speed transmission and a full set of ball bearings.

HPI RS4 3 Evo+ - 1:10 Nitro Touring Car
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  To race the HPI RS4 3 Evo+, 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.

  If you are having any problems, our guide will show you what to look for and how to fine tune the Nitro Engine for your RS4 3 Evo+.

  With some basic, sensible tips, you will discover just how easy it is to avert Radio interference, and Servo trouble, by moving your receiver or adjusting the position or height of your antenna. See how you can halve the friction and maintain your HPI RS4 3 Evo+ Bearings with a few common sense hints and tips.









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★ HPI Racing Nitro RS4 3 Evo+ ★
HPI Racing Nitro RS4 3 Evo+

★ HPI Racing Nitro RS4 3 Evo+ Chassis ★
HPI Racing Nitro RS4 3 Evo+ Chassis


Buying a Used HPI RS4 3 Evo+
Touring Car (and What to look for)


   Buying a used HPI RS4 3 Evo+ 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 HPI 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 HPI 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 HPI 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 HPI RS4 3 Evo+ 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 RS4 3 Evo+ 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 RS4 3 Evo+ 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 RS4 3 Evo+ 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 HPI RS4 3 Evo+ 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 HPI 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 RS4 3 Evo+ model and good racing.


For More on how to Setup your Touring Car, check out my Hints and Tips page.


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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

Bumpsteer

   In plain language, Bumpsteer is exactly what it sounds like. If your car goes over a bump, it will affect the toe-in setting and can on some tracks make handling of the car in a straight line difficult.

   To check if your car might have any problems with bumpsteer, have it in race mode, with the motor and battery etc in position. Place the car on a flat surface and push down your car at the front. Looking down from above, keep a close eye on the wheels and watch for any angular movement to the side. If there is then you have bumpsteer.

   For off road cars, because of them having longer dampers in comparison to on road, a small amount of toe out is considered by many as acceptable in the lower position and can sometimes be used as a tuning option because of its aggressive effect on turning ability when entering corners. On road cars, because of the shorter damper movement and the greater need for precise steering and stability in a straight line, generally have less of a problem. However if bumpsteer is detected, drivers generally try to eliminate this as much as possible.

   The standard settings for most kits from all manufacturers are adjusted to reduce bumpsteer as much as they can and it is only when you come to make changes to those settings yourself, to suit your personal driving style that bumpsteer can become a problem.

   Any changes you might make to the steering links or the caster could induce some bumpsteer, so you should check for it each time you make any adjustments in these areas.

   To adjust bumpsteer try adding or removing washers under each steering link outer ball stud. More washers will increase and fewer washers reduce bumpsteer.

   Steering geometry can be tricky to setup for those new to the sport and even some more experienced racers can struggle with this problem. So, unless you are having major problems with your cars handling, try to avoid making any radical changes and if you do, remember to only make one change at a time and make a note of it for future reference, incase you need to remove it.

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







Hints and Tips

Wheels

   When it comes to wheels, the majority of people tend to go for what looks good, something that will make their car stand out from the crowd, but are they the best wheels for you when it comes to winning races on the track?

   Quite a number of years ago I read an article in an RC magazine about RC model wheels and how important it is to have the right ones on your car. I was so impressed by that article that I immediately sold off all my old wheels and bought a batch of new ones why? Read on.

   In order for a tire to maintain grip, it needs to preserve the downward pressure through the cars suspension onto the road surface. To do this, not only must the wheels be concentric, they have to be totally rigid. So, if you accept that premise as fact, you will realise that the majority of the flashy wheel designs available for all types of RC model cars are not exactly what you might call rigid. In point of fact, they are down right flimsy.

   If you take a good hard look at some of those multi spoked pressure injected plastic wheels you have in your car box, you will soon see what I mean. Just take one in your hand, squeeze it just a little and you will realise how weak and feeble the construction of these cheap and nasty things are. Looks aren't everything. If you want to be up there with the best you have to strive for the best and that doesn't necessarily mean the most expensive. There are lots of wheels out there at reasonable prices that can give you that rigidity you need, okay, they might not look pretty, but they will perform better and give you that extra one percent that could mean the difference between winning and losing. You have to ask yourself, what you want your car to be, the one that everyone admires for its flashy good looks, or the one that gets you to the top.

   So there you have it, rigid wheels are the thing to go for. They may be heavier and provide a more dynamic rotating mass, requiring more braking than those flimsy lightweight wheels out there but then, that is a whole new subject.

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










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