With the goal of winning the IFMAR World Championship for the second time in a row, Team Yokomo has put their pride on the line to create the Yokomo Works version of the Super Dogfighter. The Super Dogfighter Works '91, with the same specifications as the machine that won the fierce 1991 race, is back in style!
The basic structure of the two-belt drive 4WD and four-wheel independent double wishbone suspension is inherited from the Dogfighter, but the center of gravity has been lowered even further, the upper deck is standard, and the suspension has been lengthened, resulting in a significant improvement in stability. The double-deck chassis structure dramatically increases pitching rigidity, achieving both sharp response and stability, making this the original model for full-scale competitions. To allow you to enjoy driving with today's power sources, the car is equipped with front and rear gear differentials and slipper clutches, and is equipped with front and rear aluminum shocks that are easy to maintain.
The chassis configuration follows that of the Super Dogfighter, but the Yokomo Works specification has been improved to significantly boost off-road performance through a lower center of gravity, increased rigidity, and improved suspension operation.
The upper deck, which was an option on the 870C, became standard on the Works '91, giving it a double deck structure. The suspension arms were extended to increase the overall width, giving it overwhelming off-road capabilities.
A slot for mounting Sub-C loose cells, which are now difficult to obtain. In addition to the mounting method for three cells on each side, it also supports the nostalgic 4-2 mounting method for Yokomo fans.
Longer span front and rear suspension arms dramatically improve off-road performance. This not only provides stability when passing over gaps and jumps, but also reduces the feeling of stalling when cornering, leading to faster times.
A slipper clutch is standard equipment to accommodate modern power sources.
The front and rear differentials, which were originally ball differentials, have been changed to sealed gear differentials for better durability and ease of maintenance.
<Kit Details>
■ Reproduce the same specifications as the machine that participated in the 1991 World Championship
■ 2-belt drive 4WD
■ Front and rear double wishbone suspension
■ FRP double deck chassis
■ Front and rear long suspension arms
■ Front and rear universal shafts
■ Aluminum height adjustable shocks
■ Front and rear gear differentials
■ Slipper clutch included as standard
■ FRP shock towers
■ 2.2 inch wheels
■ Full ball bearings
■ Clear body and wing included
*The kit does not include 2-channel radio control set (transmitter, receiver, speed controller, servo), battery (7.2v-7.4v), charger, motor, polycarbonate paint, etc. Please purchase separately.
*The kit does not include motor, batteries, and other R/C electrics.
The long-stroke double wishbone suspension, specialized for off-road driving, was already perfected at this time. The dampers were aluminum cylinders with high precision and a structure that was easy to maintain.
Turnbuckle adjustable upper arms and tie rods allow for quick settings and make it easier to adapt to different road conditions.
The front and rear drive trains no longer use the ball differentials used at the time, but have been changed to gear differentials that are easier to maintain and more compatible with modern power sources.
To make the most of the long span suspension arms, the front and rear shocks also have a long stroke, allowing it to handle big American-style jumps and greatly improving its ability to traverse gaps.
The servo is now secured with a modern servo stay, which addresses issues that arose when the car was first released, such as the servo coming loose while driving.
The suspension has been lightened by using lighter wheel hubs and a plastic steering block to reduce the unsprung weight. It feels like a modified race machine. The suspension arms have also been lengthened, greatly improving the car's off-road performance.
Modern brushless motors can be installed, but because it is a 3mm wide two-belt drive, it is best to avoid powerful motors with a small number of turns.
The battery holder is only for short size Li-po batteries. There is a battery slot in the main chassis, but please note that there is no battery holder for Sub-C.
The upper deck is also equipped with a belt tensioner. Although it does not have a belt tension adjustment function, it reduces the flapping of the valve and minimizes tooth skipping at the center pulley.
The YZ-870C was equipped with an upper deck as standard, which was previously available as an option. This machine was the first to feature a double-deck chassis structure that is still used on modern machines.
The dummy loose cell battery slot is shaped to accommodate not only the standard 3-3 configuration, but also a 4-2 configuration to optimize left/right balance.
The spur gear comes standard with a slipper clutch so that it can be used with current power sources.
The rear suspension arms have also been significantly longer, with the ends of the arms now set inside the holes, improving the efficiency of the suspension.
The rear wheel hub is also thinner, which not only improves the efficiency of the suspension operation, but also improves driving efficiency by reducing weight. The rear hub has two holes for the suspension pins, and the running characteristics can be changed by changing the roll center.
The wing mount has a shorter wire, and its structure allows it to directly absorb downforce, improving rear traction.
The front wheel has a changed offset. It is of course 2.2 inches in size, and the tires are fitted with the new super square block.
The offset of the rear tires has also been significantly changed, with the long span suspension arms now reaching all the way to the inside of the wheels. The offset is the same as that of modern cars, and it seems that the know-how was already established at this time.
