Old thread, but the debate is always fresh and fun ..... you guys left one important factor in choosing a 2-stroke of a smaller displacement than an equivalent but the needed 25% larger 4-stroke to get equal performance (as in SPEED, ultimately what we WANT!). And that is the weight savings in choosing a 2-stroke over the BIGGER4-stroke!

Point in fact - I have a BHModels "60 size" P-51 and so does a friend, they are identical in every way in the build, except the motors. I have a <font>SuperTigre</font><font> G75 in mine and he has a Saito 100FS in his. My 2-stroke P-51 blows his 4-Stroker into the weeds, over 16 MPHfaster on a police radar gun. His Saito runs sweet ... when it's not "being a woman" (finicky bit@#); while my 2-Stroke SuperTigre never so much as hicups ever. We both burn through a gallon os 15% Nitro in the same damn time. (so much for the less fuel usage of a 4-Stroke story)

I also think my P-51 sounds more like a Merlin-Packard V12 at full gallop than his Saito does, sputtering like an old Harley.

I used to race some Motocross back in the late 70's while in the USAF, I had </font>Husqvarna<font> 360(cc), which I still have and ride (and keep rebuilding), and I'll take that baby against a KTM500 4-Stroker any day and it will still blow it into the weeds as well, even though the KTM with todays technology is pretty damn light .... but still not as light as a fine Swed 2 stroker ... from the late 70's..
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