If you insist on using a stock drum on anything above a mid ten second race car then I suggest you use the best shield you can find.
I wouldn't base drum selection on ET. A twelve-second car that is capable of 8000+ rpm on a free-wind overspeed can explode a stock drum.
We are not basing in on ET alone read all of the statement that includes proper technique and safty equipment.The last statement your quoting is a caution and suggestion.We all know what will happen if RPM is exceeded in low or second gear and the overrunning clutch fails(which it will)I learn a long time ago no one can guard against stupidity and if a person can't use common sence he should run a complete containment shield around himself for all the "what ifs" that can happen.If a person free winds a 12 second car it's because he has done something stupid. Respectfully Bob
