I personally have no interest what so ever in any Rotax 593, Rotax 594 Conversion Kit, or any Rotax 583 with or without 25mm restrictors that can be installed into a F500 car with an expansion pipe built by HRP that can or needs to produce an over revved powerband @8800 rpm+. IMO, a Rotax 600cc 2-Stroke engines with an over revved 8800 rpm+ powerband if used for road racing will probably have limited life/reliability/durability, may break crankshafts, and may destroy crankcases.
Also, approving any additional 2-Stroke engines at this time in the F500 class IMO would take money and a years’ worth work and testing at a minimum to acquire all the data that’s necessary. Plus, there is no guarantee after all the work, time, and money is invested that the CRB would accept any of these proposed additional engines. IMO it would also require a creditable argument that any additional engines would have a possible positive impact on F500 class PARTICATION to get approval by the CRB!
So, again I have absolutely no interest in any of the 600cc 2-Storke engines that can or needs to be over revved to 8800 +rpm listed above based on my own personal reasons that I’ve stated above! Therefore, I’m not writing any letters to the CRB related to any of the Rotax 600cc 2-Stroke engine packages listed above. If other members in the F500 class are interested in these Rotax 600cc 2-Stroke engine packages for road racing, then they are free to write letters to the CRB and invest their time and money anyway they choose. Also, if members race with organizations where they are not required to follow the GCR F500 Specifications for road racing then they are free use any 2-Stroke engine they choose.