My 12 year old son was doing his practice laps yesterday before the motos and pretty well running away from the other kids on his YZ85 Supermini (beautiful day and a pitifully low turnout for some unknown reason..?), when a red & white mini-thumper came roaring onto the track after him. It was a big, soft, power-robbing, loamy track with some long hills and the battle was on! The "battle" lasted awhile, but the thumper eventually won out, partly because my son wanted to see what the heck was chasing him (he could sure hear it!) and partly because the thumper had a 17 year-old A-Class "test rider" on it, and partly because it was just plain powerful! Later, with the proud new (and much younger) owner on it, it didn't put up as much of a fight. But it COULD have with the right rider it appears... It was the first new Honda 150 we have seen. I understand it is extremely high maintenence with its "mono-cam" valve adjustments (need adjusted after every race?!!), but it does have power. I have not paid the slightest attention to the inevitable 85cc/supermini class thumper bikes being developed. Now I am, though I expressed my two biases when I declared I would never own a "first model year" experiment and would much prefer a Yamaha. So another pit dad told me that Yamaha already had their's "track tested and proven" since 2002 and was just waiting for the official green-light from the AMA to release it (probably next summer). All the bugs were supposedly already worked out and it did not suffer from the "monocam blues" that the Honda does. Oh boy... I'm not sure whether to be happy or sad... Regardless, I cannot find anything with any search I try anywhere about a Yamaha mini-thumper. If the folks on this site do not know about it, it doesn't exist. So what's the scoop (before I finish sinking a bloody fortune into a Supermini motor for next year)?