I'd think that balancing the driveshaft to higher RPMs would make decent work of harmonics... but even then, you could always just play with different gear ratio sets to keep the driveshaft RPM down while maintain the same engine/vehicle speed.
__________________
"¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"
|