Radio Controlled Models
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1/10 Scale Electric Buggy:

Yokomo YZ-870c Super Dog Fighter - Radio Controlled Model



History and Info:

  Introduced by Team Yokomo in 1987, the 4WD YZ-870c Super Dog Fighter, went on to win the 1989 World Championship in St Ives, New South Wales, Australia, driven by Masami Hirosaka.

  The model is belt driven, on an FRP plate chassis, with a verticla "backbone" plate, ball differentials, one-way clutch, coil spring over oil filled dampers, universal joint drive shafts, anti-roll bar and a full set of ball bearings.

  This buggy was never widely released in the USA, but a small number were imported and sold as the Yokomo C4. Then in 1988, with a few modifications, the model was imported by Team Associated and introduced as the YZ-10.

  In 1989 two additions to the series were produced, the YZ-870C Super Dog Fighter Custom and soon after their World Championship win, the YZ-870C Super Dog Fighter WC, with all the upgrades, including a new top deck to improve chassis rigidity.

  The YZ-870C Super Dog Fighter was re-released in 2023.

Yokomo YZ-870c Super Dogfighter - 1:10 Electric Buggy

▼ Scroll Down for More Images ▼


  To race the Yokomo YZ-870c Super Dogfighter, you need to tweak and adjust all you can to give your car improved handling, stability and grip to ease around the curves and keep you on the track. One little setting change can transform your car into a world beater. Just follow our chart to attain the most favourable Set-up to suit your particular needs on any track.







Gas/Nitro Engines Body Shells Radio Transmitters etc Tires Wheels/Rims Electronic Speed Controllers Battery Packs / Chargers Electric Motors















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★ Yokomo YZ-870C Super Dog Fighter ★
Yokomo YZ-870c Super Dogfighter
★ Yokomo YZ-870C Super Dog Fighter Chassis ★
Yokomo YZ-870c Super Dogfighter Chassis
★ Yokomo YZ-870C Super Dog Fighter Chassis ★
Yokomo YZ-870c Super Dogfighter Chassis
★ Yokomo YZ-870C Super Dog Fighter Chassis ★
Yokomo YZ-870c Super Dogfighter Chassis
★ Yokomo YZ-870C Super Dog Fighter Chassis ★
Yokomo YZ-870c Super Dogfighter Chassis
★ Yokomo YZ-870C Super Dog Fighter Chassis ★
Yokomo YZ-870c Super Dogfighter Chassis
★ Yokomo YZ-870C Super Dog Fighter Chassis ★
Yokomo YZ-870c Super Dogfighter Chassis
★ Yokomo YZ-870C Super Dog Fighter Chassis ★
Yokomo YZ-870c Super Dogfighter Chassis
★ Yokomo YZ-870C Super Dog Fighter Chassis ★
Yokomo YZ-870c Super Dogfighter Chassis
★ Yokomo YZ-870C Super Dog Fighter Chassis ★
Yokomo YZ-870c Super Dogfighter Chassis
★ Yokomo YZ-870C Super Dog Fighter Chassis ★
Yokomo YZ-870c Super Dogfighter Chassis
★ Yokomo YZ-870C Super Dog Fighter Chassis ★
Yokomo YZ-870c Super Dogfighter Chassis
★ Yokomo YZ-870C Super Dog Fighter WC Chassis ★
Yokomo YZ-870c Super Dogfighter Chassis
★ Yokomo YZ-870C Super Dog Fighter WC Chassis ★
Yokomo YZ-870c Super Dogfighter Chassis
★ Yokomo YZ-870C Super Dog Fighter WC Chassis ★
Yokomo YZ-870c Super Dogfighter Chassis
★ Yokomo YZ-870C Super Dog Fighter (2023) ★
Yokomo YZ-870c Super Dogfighter Chassis
★ Yokomo YZ-870C Super Dog Fighter (2023) Chassis ★
Yokomo YZ-870c Super Dogfighter Chassis

Buying a Used Yokomo Dogfighter Buggy (and What to look for)


   There are essentially three reasons you might want to buy a used Yokomo Dogfighter Electric Buggy; you may be a collector, looking to restore and display it; restore and sell for a profit; or simply restore and race an iconic vintage model. Personally, I used to get a buzz out of restoring an old clapped-out model, installing modern day electrics and maybe a few hop-ups, then showing the gang at our local club, just how competitive those old models could still be.

   Cheap, pre-loved bargain models, parts and spares are always coming up for sale, but once you have made your purchase, the one thing you will always need, is an instruction manual. If not supplied with your purchase, they can often be downloaded from the Yokomo website, or purchased separately on eBay. With an instruction manual, any problems with your model Buggy you may discover, can easily be fixed.

Make a General Visual Inspection

Dampers
   When you receive your used Yokomo 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 Yokomo 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.

Check the Body-Shell

   If the body shell of your Yokomo Dogfighter 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 Dogfighter model, fit an under guard to stop dirt and gravel entering the chassis.

Drive Shafts and Turnbuckles

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 Dogfighter Buggy model at a competitive level, I would also recommend you obtain and fit titanium pivot shafts, turnbuckles, tie rods and steering rods.

Examine the Drive System

   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.

Pinions and Spur Gears

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.

Don't Neglect the Ball-Joints

   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.

Steering Servo and Servo-Saver

Servo Gears
   The Dogfighter 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.

Stabilizers

   If body roll on your Yokomo Dogfighter 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.

Don't Forget those Bearings

Ball Bearings
   If your used Yokomo 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 Dogfighter 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, Listed and Reviewed 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 Models and 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.



















★ Yokomo Dogfighter ★
Yokomo Dogfighter





Hints, Tips and Information

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 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.

Read the Complete Article  ▶ ▶






Hints, Tips and Information

Choosing a Transmitter

   When you first started in RC, you may have purchased a package that came with the car kit, motor, battery, charger, ESC and radio system complete. The transmitter was probably just a basic steer wheel, or stick type, with nothing more than forward, reverse, left, right and simple trim settings to centralise the servo and ESC.

   After a while, as your enthusiasm grows and your experience increases, you will want to move on to a better radio system, with more setting options, but where do you begin?

   Choosing the right transmitter is a personal thing. It has to feel right, have the balance you like, not be too bulky for your hand size and have all the features you might need to set up your car to your driving style.

Read the Complete Article  ▶ ▶







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