1/18 Scale Electric Formula One Car:

Kyosho Lotus Honda 99T - 3175 - Radio Controlled Model

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History and Info:

   Released by Kyosho circa 1988, the Lotus Honda 99T Formula One Car - # 3175 - was based on the car driven by Ayrton Senna and Satoru Nakajima in the 1987 F1 Championships, finishing third in the Constructors Championship with Sixty Four points.

   The unassembled kit came with an unpainted ABS plastic Bodyshell, with Camel Team Lotus Decals, a Le-Mans DM20 Motor, and molded nylon Wheels with Sponge Tires. A Radio System, ESC, Battery and Charger to be purchased separately.

   Now considered rare, all the early Kyosho F1 RC models are much sought after by ardent collectors the world over.

   Check out our Kyosho Archive for other F1 models.

Kyosho Lotus Honda 99T F1 Car - 3175

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The 2WD model is based on an FRP plate chassis, with double wishbone suspension, a gear type differential, coil spring over friction dampers, dogbone drive-shafts and nylon bushings.

1/18 Scale Formula One (F1)
Manual

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Radio Controlled Model Accessories:

★ Kyosho Lotus Honda 99T - 3175 ★

★ Kyosho 1/18 F1 Chassis ★

Buying a Used Radio Controlled Model
(General Information and Advice)

There are essentially three reasons you might want to buy a used RC model; 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 car. 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 manufacturers website, or purchased separately on eBay. With an instruction manual, any problems with your model you may discover, can easily be fixed.

Make a General Visual Inspection

Dampers
When you receive your used model, inspect 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.

If your model comes 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

A broken, ripped or damaged bodyshell, can be easily repaired with rubber solution glue (I use Shoe Goo). Also, for added protection and if available for your 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, some cheap steel drive-shafts wear and bend far too easily.

If you intend to race your model at a competitive level, for strength and weight reduction, I would also recommend you obtain and fit titanium pivot shafts, turnbuckles, tie rods and steering rods.

Examine the Drive System

On gear driven models, open the gearbox 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, for racing 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.

Drive Belt driven models need them checking at regular intervals for wear, tension and damage. If considered necessary, adjust the tensioning pulley until the belt can be depressed in the centre by no more than approximately 5mm. Also examine the drive pulleys for wear. The pulley 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

Gears are a weakness on all 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 or 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 problem, if possible, fit bolts with locking nuts to the 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 racing, all 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 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.

Don't Forget those Bearings

If your used model comes with plastic or 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 by the previous owner with bushings installed, you may have to change all the axles and drive-shafts. For more information, take a look at my article, How to get the best from your Bearings.

Finally, good luck with your RC 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.

RC Information and Advice:

Hints, Tips and Information

Anti Squat

   Described as the angle at which the suspension arms pivot in relation to the chassis, Anti Squat affects traction under acceleration.

   Considered to be at its most effective from a standing start, the handling and stability of the majority of modern day On Road and an increasing number of Off Road models, can be improved with a certain amount of anti squat, normally no more than around 3 degrees.

   Basically, more anti squat gives you more traction, but after a certain point, that advantage is lost and the car will become unstable when turning into high speed corners. For Off Road models anti squat can also improve how the car handles on bumpy tracks.

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Hints, Tips and Information

Gearing to Win

   Just because you have the latest model, the best available batteries, the most powerful electric motor or nitro engine, doesn't mean you will go out and win everything in sight. The fastest car on the track is rarely the one that wins, it's the one that can accelerate out of corners under control, and remains consistent and efficient from the start to the end of a race.

   In days gone bye, all you had to consider was the number of mili amp hours (Mah) in your battery, and the current draw of your high powered motor. Gearing for a five minute race was a balancing act. But with the development of the new high capacity batteries, brushless motors and smart ESC, all that changed. Now, gearing is more of a matter of what suits your driving style and how quick your reflexes are on the sticks, the trigger and steer wheel of your transmitter. So, where do you start?

   At your local club track, you quickly find the right combination and set-up for your car by talking to the more experienced members. After a while, as your knowledge grows, tweaking a few things here and there can give you that small edge to keep you competitive. So, it follows that on tracks you don't know, you should talk to the locals there, who may be racing a similar model to your own, and adjust your set-up to suit.

   Gearing correctly for any given track is absolutely crucial if your car is to be competitive.

   Too high a gearing may get you in front at the start of a race, but as your motor begins to overheat and lose efficiency, that initial advantage will soon be lost.

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