There are two ways of looking at a gearbox and it relies upon totally on the user. Generally gearboxes are categorised by their ratios. There are additional traits about the numerous types of substancesboxes which are more technical than I wish to get into at this stage.
Suffice it to say we wish to narrow down the types of ratios available to the Hobbyist that are direct, easy and straightforward to observe for the beginner to the skilled hobbyist.
We are dealing primarily with Brass Steam Locomotives and the original gearbox that got here with the engine versus replacing the gearbox with better equipment. Ratios vary from very sluggish to high speed. Over the last 50+ years gear boxes have not necessarily been standardized. The overall ratios are 27:1 or 28:1 for high speed and 36:1 or 37:1 for low speed. Nevertheless, a number of the locomotives produced in Asia got here with odd ball ratios of 41:1 which made the engine crawl at best.
The gearbox alone dose not essentially make the engine run faster or slower. It is dependent upon the Can Motors rpm values and torque values. For instance, if I wanted a 2-10-2 locomotive to run at scale commonplace velocity with a load I might chose a gear ratio of 28:1 and a can motor of 12.5 rpm with a superb torque value. Generally the size of the motor will determine the torque value. Most can motors will fit in a 2-10-2 locomotive. This is a prejudicial resolution and is not necessarily the will of anybody hobbyist. I want the 27:1 or 28:1 ratio gearbox with the precise Can Motor to regulate engine speeds.
The other ingredient that’s essential for this system to work is the gear located on the principle driver of the steam engine. This gear is the same ratio that you would choose for you gearbox. The gearbox truly rides on the principle driver gear. With out getting into the particulars of the Can Motor to the gearbox it needs to be noted that the motor shaft to the gearbox shaft have to be stabilized so the gearbox does not spin around the principle gear. That’s the technique of attaching the 2 together to incorporate the ability to gearbox mechanism. In another article, I will explain the drive shaft particulars and the types of mechanism that are available to accomplish this task.
It must be noted that there are manufacturers of drugsboxes and the like who’ve catalogs to help you determine the type of drugsbox you’re looking for. I want to make it clear that for instance, a 28:1 gearbox may have a number of traits about them that make for various makes use of for various engines. This is the place the catalog is available in as very helpful reference guide.
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