I did not mean to slight Michael's endeavor, and applaud the fact that he is continuing Henry's work. I love Nelson engines, and I wish the full line were still available. I have had the N36 combat engine and an SS Q 40. Sorry for the use of the word clone. It is just what came to mind to describe them. I am not fully up to speed on the deal they have or had worked out on the continued production. This is somewhat off point.
The point is, that the engines are disappearing. And then rules and event changes effect the equipment we need as well. So even though the LS Q500 40 is still available, 426 makes the production useless, as those engines are really only good for racing. I always loved flying 424, and I am sure another .40 sized sport engine could be found, but what an interesting time it is, to have scrounge around to find a commonly produced .40 engine.