My pirates need to maximize profit from their illegal horse racing activities
But the horses are not normal, they are machines. You can ride on top with difficulty, and it may slow them down. So gamblers want excitement and lots of opportunities to bet. What race format suits these machines and the greedy gamblers best?
Environment: A volcanic waste world with average temperatures over 800°F temperatures inhabited by British settlers 200 years ago has a pirate enclave engaged in horse racing (and playing the numbers, obviously). A particular genius has figured out reliable and durable articulating joints for knees, ankles, shoulders, etc., so they make steam-turbine powered gyro-stabilized horses to quickly cover the rugged terrain. They have no rubber that can survive the surface, so legs are the best mobility option. Competition for best design improvements have led to horse racing. Horse designers and inventors all try their improvement ideas at the track. People wear environment suits outside.
Fuel and engines
The fuel for the society, and the horses, is called Negatite. This derives from an ore that is crushed down into a fine powder and processed with nitric acid to form the oily negatite fluid. When negatite is exposed to the outside air, it undergoes an extreme endothermic reaction, cooling down quickly to form a crystalline gell. Steam engines pump negatite into cooling tubes in the turbine condensers, drawing steam through the blades and condensing it back to water. Environment suits use negatite to cool their occupants and to run oxygen generators in the suits.
This all is important because unlike steam engines on cool worlds, the heat is the ambient atmosphere. Instead of having a steam generator, water is run through pipes along the ribcage of the horse. This brings the water to a boil to drive the turbine. All engines in the world gain heat with external piping, in fact. Turbines link to a pump which pressurizes the hydraulic tanks, and hydraulic fluid operates all mechanical apparatuses.
The horse design
The horse is well articulated in shoulders, haunches, and the neck. Strong pins in the hooves are linked to plungers which close a small vacuum line as the hoof meets a solid surface. This signals a valve to put pressure on that leg, in the correct proportion determined by the 6-axis gyroscopes. Legs get the correct pressure to keep them running level, or, in the case that the horse needs to turn; slightly off-level. All this works together so the horse can run over fairly rough terrain without slowing down. Statistics are this:
History
- Vast expanses of rugged volcanic plains and craggy desert separate ore deposits where cities formed. Before the first railroad went up, wheel bearings were impractical as they were too difficult to seal and keep lubricated in the intense heat. An articulated joint with no more than 20° range of motion became the most durable way to attach any articulated machinery extensions or limbs without exposing them to the elements, because the entire joint can be shielded and kept pressurized to prevent any sand or debris from entering. No suitable material existed to form durable axle dust covers at these temperatures. Thus a legged transportation made the most sense. The design needed a long stride to reduce the number of steps taken, and thereby reducing the wear on the joints. A tall stature allowed the vehicle to cross narrow crags or other obstacles, and the vehicle also should not be limited to staying on the ground. A vehicle which could jump over small boulders and evorsions if needed made transits much quicker, where wheels lacked the articulation to climb anything larger than half their height, and easily get stuck in holes. With precision gyroscopes perfected by brilliant machinists, the form of a horse made the most sense.Specifications:
Horses have been developed for many different applications, from heavy load hauling of ore wagons along makeshift mining roads, to rapid messenger transport "roadster" models with lighter frames and fast terrain response. Some models can be ridden on in an environment suit but straddling any horse powerful enough to carry a load would be a stretch because they are too wide for most to get legs around. Desert sleds on runners are common to be hauled behind a horse on an extended trip, where extra negatite can be carried, and any cargo the trip may need. Passenger dessert sleighs are also common, which can be fully enclosed and climate controlled. Once at a gallop, a horse can run very efficiently, as legs and stride are harmonically tuned to a specific speed. Some horses have adjustments for variable resonant speed, and these are generally very expensive and prone to problems.Racing:
Legitimate horse racing evolved to pit designs against each other, generally placing them in the natural environment where they would be operated. Winning promotes the best engineering and designs, and results in a great demand for your horses. Those courses generally run two hours with several laps around a natural course. Betting also brings in prize money for the winners, and promotes the sport. The gambling aspect of horse racing appeals to clans of outlaws living in the badlands in hobbled-together villages, where a small ore deposit may have been found. The promote their illegal events through an underground network, and high-profile people often secretly sponsor racers to compete in these events for a chance at large gains. Unlike the regulated sport, these races are "win at all costs," with the promise of some radical new advancement which they can patent and exploit to the public.This question is asking help with the format for $\underline{ \textbf{illegitimate}}$, unregulated horse racing
The problem
There are many challenges to these horses. The horse's ribcage needs access to lots of heat. The horse doesn't have a large onboard fuel capacity due to all the complex machinery. Whoever is controlling the horse should have a good vantage point as the horse can't see, it goes or stops according to the commands of the operator. Many cities run races, but the particular race in this question is operated illegally at the pirate enclave, and is inherently quite dangerous, but by the same token, quite profitable if you win.
Question:
What format of horse racing would bring the best competitor opportunity, spectator excitement, and allow the maximum "house" profitability?
Base them on existing terrestrial race formats, such as harness, chariot, flat, endurance, etc. The track obviously wants a race that can guarantee a house win, or rig without too much trouble when needed. It's about control, and creating the illusion of high-stakes sports gambling.