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1/10 Scale Electric Buggy:

Seben BE4 (Radio Controlled Model)


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History, Info (and How To Set-up Tips) for the Seben BE4:


  Introduced by Seben circa 2008, the 4WD BE4 chassis was available with a number of bodyshell options: BK5 - BK7 - BK8 and came RTR with a brushless motor, ESC and radio system.

  The model was shaft driven, on a molded plastic double deck chassis, with differentials, coil spring over oil filled dampers, dogbone drive-shafts and ball bearings.

Seben BE4
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  To race the Seben BE4, it calls for fine tuning to attain better steering response and improve grip when cornering so you don't slide off the side of the track. Minute changes can make huge advancements. Our easy to understand list will show you how and lead you to the optimum Set-up to put you in front of the rest on the track.

  We give you all the basic information you need to guide you to the best Electric Motor for your BE4 and achieve the best Gearing, to get you in front on the track and keep you there.

  Find out how the worlds top professional RC racers get improved efficiency from their Bearings employing a number of sensible ideas. Find the way to avoid Radio interference, and basic instruction on how to Charge your Batteries, so they will last longer and provide improved power.









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★ Seben BE4 ★
Seben BE4

★ Seben BE4 Chassis ★
Seben BE4 Chassis

★ Seben BE4 ★
Seben BE4


Buying a Used Seben BE4 Buggy (and What to look for)


   Buying a used Seben BE4 Electric Buggy, 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 back yard.

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

Dampers
   When you receive your used Seben Buggy, 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 Seben 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 Seben BE4 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 BE4 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 BE4 Buggy 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 Buggy 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 back yard, if you intend to race your Buggy 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 Buggy 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 Electric Motor 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 Electric Motor mount and remember to check them for security after every two or three runs.

   Ball joints always cause problems. For top level Electric Buggy 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 BE4 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 Seben BE4 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 Seben Buggy 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 BE4 model and good racing.


For More on how to Setup your Buggy, 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

Sway Bars

   On most forms of RC model cars, Sway Bars, also referred to as Stabilizers, Torsion Bars, or more commonly in some parts as Anti Roll Bars, are often nothing more than a short length of spring steel, clamped to the chassis or sometimes the gearbox of the car, extending out to the lower wishbones direct or connected to the wishbones using short adjustable or fixed length links and ball joints, depending on their position.

   The principal behind the Sway Bar is simple. As the car enters a corner, weight is transferred to the outside wheels, the chassis rolls due to inertia and the suspension dips and grip on the inside wheels is reduced. In an effort to counter this dipping effect and transfer some grip back to the inside wheels to improve traction as you exit the corner, the sway bars transfer the dip of the outside, to pull down the inside wishbones, improving grip on the outside wheels and improving overall stability.

   Sounds complicated I know, but for some tracks sway bars can be a useful tool when you have exhausted all other options to correct your handling problems.

   Tuning your Sway Bars is quite easy. Some manufacturers do offer colour coded tuning sets with varying thicknesses of spring steel wire, but the best way is to change the position the bar is attached to the wishbone, or on some variations you have the option of positioning the link on the Sway Bar itself. By simply moving a small collet clamped along the short length of the bar. Closer to the central pivot point reduces the leverage of the bar and effectively increasing its resistance, further away from the pivot point reducing resistance. More fine tuning can be achieved by adjusting the length of the turnbuckle link (if available) to pre load the bar.

   Personally, before I ever installed any sway bars I would always try changing damper tuning springs and oil viscosity settings, especially if the track was uneven and bumpy, in which case the effectiveness of the bars was minimal if at all.

   For those more into Drifting, Sway Bars can be an easy way to fine tune your car. A single turn on the turnbuckle links can be a way to simply increase or decrease wheel traction that minute amount you need to get the perfect balance.

   For more on how to use Sway Bars check out our Set-up tips page linked below.

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







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.










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