OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Engines Questions On Victa Two Stroke Engines What Power Torque is my Power Torque?

As MF said, pretty much about costs and marketing, base models/deluxe, they even brought out one with a low comp head so they could save on the decomp valve, base model wheels and caps, straight handelbar, the deluxe models got all the good bits. Build the same base motor for 35 years and just fit different plastic bits to freshen it up each year or so you can claim it is a new model. Proof is when you get the base design right, why change it, just give it a facelift
As for the HP, you hear figures of 6HP but in reality it doesn't matter that much because it is the tip speed of the blades that does all the work, this is why the little 125's were so good rev them up and they chewed through all the jungle back yards in Aus. When you talk HP my classic example to prove the 2 stroke point is when the 2 stroke 500 GP bikes were replaced by 4 strokes, they had to double the cc's to 1000cc for the same riders riding the same tracks to achieve the same lap times. This was about the only time we have ever been able to compare apples with apples away from the smoke and mirrors of marketing hype
MF another interesting thing I have found (more smoke and mirror stuff) with the Tornado they used the straight inlet manifold, this then filled up the gap above the carby because the carby was higher, they then raised the plastics covers to give the impression it was a bigger motor, but underneath it is exactly the same