Designing and building dry sumps has been what Armstrong Race Engineering, better known as A.R.E has been doing for over 35 years. The science and engineering involved has been the main passion for owner Gary Armstrong. In the beginning everything except F1, Indy, and a few others used fabricated stock steel sumps. ARE recognized the advantages of using a cast aluminum part for it's strength, sealing , and resistance to vibration fatigue. Even more intriguing was the ability to start from scratch and design a pan that took advantage of the centrifugal force of the oil leaving the crankshaft, better trap it, and thus make a more effecient scavenging system. This parameter has always been more important than the ease of using a modified stock sump. ARE's newest version of dry sumps are called"fluidic" . The viscous drag of the oil in the crankcase, when eliminated to a great percentage, increases the engine horsepower by an amazing amount. This is aided by a design that "makes
available" the oil to the scavenge pumps, allowing them to also work more efficiently. A true "system" allowing ALL the dry sump components to work in concert.
The dry sump oil pumps are not allowed to be "simple" pumps either. From the much needed packaging and mounting of the pumps, to paying great attention to the fluid dynamics involved, every unit has a purpose. Only the best alloy's, gear /rotor design, bearings/seals and of course flow efficiencies can be permitted in today's highly sophisticated racing engines. Today's super CNC's and cad/cam programs can result in highly reliable, yet very powerful "hearts" to the racing engine.
The expanding product line of ARE dry sumps has presented the need for a smaller version of dry sump pumps we call the "mini mite". This pump started with a contract to build a very small, very high ( relitevly) RPM pump for one of the top echelons of racing. The RPM needed to run this pump resulted in a very innovative designed pump, particularly in the "anti cavitation " features of the pump cavities and pockets. Now this Mini version pump is heading for the smaller, higher RPM engines such as cycle engines, still requiring dry sumps to stay alive.
Dry sump systems, with the science and technology that makes racing unique, are an example of the many facets of parts engines require, and will continue to create race engineers for our industry.