ROSSI ENGINES: PRECISION OF MANUFACTURE
Precision has often been cited as one of the main hallmarks of Rossi quality, but perhaps we should highlight a few of the key areas where Axe Motor Rossi standards place our engines in a league that is head and shoulders above that of the competition.
The terrific power that has always been associated with Rossi engines would not be possible without the incredibly high standards of precision that we make it our business to maintain, but these standards are also responsible for the amazing reliability and long engine life that anyone buying a Rossi can expect with complete confidence. Every Rossi engine carries a 3-year warranty, and this is a measure of our confidence that we gladly pass to you.
ABC PISTON & CYLINDER ASSEMBLIES:
Although it was an innovation developed specifically for racing engines, it is yet another example where racing has provided a laboratory to develop technologies that would ultimately bring enormous benefits to all users. If operated with a reasonable degree of care a good ABC piston & cylinder assembly should last almost forever. Minute re-growth of the piston as a result of expansion at operating temperature compensates for wear and the fit is maintained almost indefinitely under correct operating conditions. Attempts by several other manufacturers to replicate ABC technology have been less successful, however, and many of these have been obliged to resort to metallurgies and systems that are less durable and less expensive to manufacture.
CONNECTING RODS:
Each Rossi connecting rod is made from the finest ergal alloy available. The selection of this material and our design give you the best combination of lightness for internal balance and strength possible. Connecting rods are bushed with bronze alloy at both the big end and the small end to ensure the longest possible life, but equally important is the attention that we pay to correct crank pin and wrist pin clearances to prevent breakages and excessive wear. Ensuring that big end and small end holes are bored exactly parallel to within the same minute tolerances described earlier is undertaken with a degree of meticulousness that would astound anyone not familiar with practices at Rossi. Incredible precision in this area lies at the very heart of the power, reliability and long engine life that connoisseurs of fine machinery have come to expect from Rossi. Most engines produced for the mass market simply cannot even approach these standards and mediocre performance and short engine life are among the inevitable consequences of this.
CRANKSHAFTS:
Crankshafts are forged from the best materials possible using processes that ensure optimal grain flow and hardness. This results in crankshafts that are extremely resistant to bending and wear. They are then ground to the same tolerances as described earlier. At no stage is anything left to chance. There are very well worked out procedures underlying each aspect of what we understand as Rossi quality!
CRANKCASES:
For most engine manufacturers the manufacture of crankcases is a matter of employing a compatible aluminum alloy that makes for easy mass production by means of an injection moulding process. This may make good economic sense for the manufacturer, but the result is not the best for the engine concerned.
Injection moulded crankcases are not very strong or crash resistant, but there are less obvious drawbacks associated with them too. Permanent expansion after running at operating temperature for a while can affect the alignment of the internal components of the engine and undesirable consequences such as ball bearing failure and a sudden falling off in performance can result.