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The QMI/BAC Carbon Fiber Drive Shaft is the optimum balance of Precision, Durability, Reliability, Safety, High-Strength and Lightweight. It is the only carbon fiber shaft that is engineered to fully utilize the extraordinary high strength of the composite (carbon fiber) material. The QMI/BAC Carbon Fiber Drive Shaft's amazing high strength and lightweight are the result of over 35 years of composite design and manufacturing experience and the use of the highest strength, most expensive carbon fiber material available (highest-strength, aerospace-grade material) NO COMPROMISES.
The QMI/BAC Carbon Fiber Drive Shaft has a near zero T.I.R. T.I.R. (Total Indicator Runout) is any imperfection in form that causes a rotating part, such as a drive shaft to “run-out”, that is to not rotate with perfect smoothness. These conditions include being out-of-round, eccentricity or being bent axially. Actually, in fact, there is no need to balance our shafts at all! All of our carbon fiber shafts are inherently balanced due to the precision of its manufacture (not the use of external weights). All other carbon fiber shafts need and use external weights for balancing. Some of the competitor’s shafts have a T.I.R. as high as .060”.
The QMI/BAC Carbon Fiber Drive Shaft
is the ONLY carbon fiber shaft
with a built-in protective outer shell.
This robust design has resulted in a carbon fiber shaft with an impeccable service record. Since its introduction in 2010, the QMI/BAC Carbon Fiber Shaft has a 100% reliability rating (no reported failures after years of circle track racing). No other carbon shaft manufacturer can make this claim.
Since the QMI/BAC Carbon Fiber Drive Shaft is the lightest drive shaft…period…it is obviously the safest (less inertia forces if detached from the car due to a track collision). This makes the QMI/BAC Carbon Fiber Drive Shaft the safest possible drive shaft for spectators and drivers alike.
The QMI/BAC Carbon Fiber Drive Shaft has an ultimate torsional strength of 4,100 ft.lbs. (ref. test results below) which is over 2x stronger than a typical aluminum drive shaft. It is also over 2 ½ x stronger than the 1310 u-joint itself. The 1310 Spicer u-joint has a torsional rating of 1,600 ft.lbs.(minimum elastic limit). This represents the maximum torque load the universal joint will transmit instantaneously without brinelling the bearing or yielding in any part. This may be assumed to be the maximum safe shock load. Therefore, the QMI/BAC Carbon Fiber Drive Shaft has an extremely high factor of safety which has contributed to its impeccable service record.
Notice, the QMI/BAC Carbon Fiber Shaft is up to 3 lbs. lighter than most of the carbon competitors. All of the carbon competitors' shafts weigh more than a typical aluminum shaft. The QMI/BAC carbon fiber shaft is the only carbon fiber shaft that has any performance advantage over an aluminum shaft.
#1 Impeccable Service Record (Track History since 2010)
#2 Since high strength, lightweight components particularly in the drivetrain and the suspension, are the building blocks and the key to building a winning race car, the QMI/BAC Carbon Fiber Drive Shaft is the ultimate high performance drive shaft. The dramatic reduction in rotating weight (approximately 2 lbs.) and the reduction of unsprung weight (approximately 1 lb.) are significant advantages vs. a typical aluminum shaft. Based on these facts, there is no advantage to any other carbon fiber drive shaft. All other carbon drive shafts weigh more than a typical aluminum drive shaft.
All carbon fiber drive shafts are not the same.
You can compare the other
(aluminum or carbon fiber)
drive shafts to one another, but the
Carbon Fiber Drive Shaft
The truth is...
no other metal or carbon fiber
drive shaft is even close.
We leave the competition
in the dust….