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1/8 Scale Nitro Truck/Truggy:

Himoto RXT-1 (Radio Controlled Model Review)


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History, Info (and How To Set-up Tips) for the RXT-1:


  Introduced by Himoto Racing circa 2007, the 4WD RTR Off Road Truggy RXT-1 - came with a 28CXP 4.7cc engine and the RXT-21 - came with a 21CXP 3.5cc engine and 2.4Ghz radio system.

  The model is shaft driven, on an alloy plate chassis, with 3 x gear type differentials, coil spring over oil filled dampers, rear dogbones, with front universal joint drive-shafts, anti-roll bars and ball bearings.

Himoto RXT-1
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  To race the Himoto RXT-1, 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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★ Himoto RXT-1 ★
Himoto RXT-1

★ Himoto RXT-1 Chassis ★
Himoto RXT-1 Chassis

★ Himoto RXT-1 Chassis ★
Himoto RXT-1 Chassis

★ Himoto RXT-1 Chassis ★
Himoto RXT-1 Chassis

★ Himoto RXT-1 Chassis ★
Himoto RXT-1 Chassis


Buying a Used Himoto RXT-1 Truggy (and What to look for)


   Buying a used Himoto RXT-1 Nitro Truggy, 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 Himoto website, or purchased separately on eBay. With an instruction manual, any problems with your model Truggy you may discover, can easily be fixed.

Dampers
   When you receive your used Himoto Truggy, 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 Himoto 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 Himoto RXT-1 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 RXT-1 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 RXT-1 Truggy 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 Truggy 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 Truggy 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 Truggy 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 Truggy 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 RXT-1 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 Himoto RXT-1 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 Himoto Truggy 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 RXT-1 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

Choosing a Nitro Engine.

   Once you have made your choice of RC model, you need the right engine to get you where you want to be out in front.

   Touring Cars: Nitro powered Touring cars require a specific ability. Your first consideration should be the tail pipe. A number of models will take only a rear tail pipe configuration, but the majority will accept the more conventional side pipe.
   Beginners should consider something with a moderate amount of power and a rotary carburettor for easier controlled handling. For top level tarmac track racing or those with more experience, look for an engine with good low end torque that has a slide valve carburettor to give you fast acceleration out of the corners.

   Trucks and Monster Trucks: Unlike on road Touring Cars, Off Road Trucks and Monster Trucks don't need that bottom end torque, unless you like to do wheelies. So something less powerful with a rotary carburettor will provide you with the smooth acceleration and less wheel spin required for controlled dirt track racing.
   If tarmac is your thing, where grip is not a problem and you have the experience, a slide carburettor may suit your needs better. Tail pipe choice is generally a matter of preference. Most trucks will accept both side and rear configurations.

   Buggys: By far the most popular Off Road Nitro RC Models there is a wide choice of Buggys out there, many of which now come with engine included.
   Most Buggy engines use a slide valve carburettor, but if you are new to RC you may be better off trying a rotary carburettor. High powered engines will throw up plenty of dust, but if you can't keep your Buggy on the track you are wasting your money. So something with less power may be better for you until you feel more confident.

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







Hints and Tips

Battery Connectors

   Over the years I have been racing radio controlled model cars of all descriptions, I have tried a number of different connectors for my batteries.

   My first car was a Tamiya Boomerang and of course the batteries I used all had the standard Tamiya connectors, which were fine with the kit supplied 27T silver can electric motor, but I soon discovered their problem when I installed my first Modified motor. The high current demands of the motor created so much heat, the plastic surround of the connectors melted and fused together. No matter how I tried they could not be disconnected. My only option was to cut the wires.

   From there I moved over to Corally connectors, commonly referred to by many now as Bullet connectors. Comprising of a short length of 4mm gold plated tube at one end and what looks like what we used to call a Chinese lantern fitting that slotted inside the tube, also gold plated. Although they were highly efficient and reasonably easy to install and use, I never really took to this type of connector, I think it was the fact each connector was exposed, leaving the possibility of a short circuit.

   Then I remember buying some second hand batteries at an area meeting one day, they had these little red block connectors I soon learned were "Deans" rated at around 40 Amps. The looked like just what I was looking for so I gave them a try. They worked fine, although I didn't like the shortness of the part to be soldered. However, for about two years they were my connector of choice, until I stumbled across an advert in the "Radio Race Car International" magazine.

   The latest development of connectors at that time were named "Power Pole" and rated at 45 Amps. A small tube, plated with silver, with a short extending lip, that slotted over the exposed wire. This could either be crimped onto the wire or soldered. For safety and efficiency, I preferred the latter. Then to complete the connector, a colour coded plastic cover fitted neatly over it. The connector is still the most efficient I have come across and never overheats. That was way back in 1995 and I am still using them to this day. So, if you are looking for a connector to solve your overheating problems "Power Pole" is the one I recommend.

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










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