Selecting the Proper Rearend Gear Ratio What:Selecting a rearend gear ratio (ring & pinion set) to provide the desired highway cruising speed, 60—65 MPH, for a modern hot rod. How:    A number of factors must be considered when selecting a rearend gear ratio (ring & pinion set).  Tire diameter, transmission choice (with or without overdrive)… Continue reading Gear Ratio

Spring Rate – Spring Load – Load RateFrom Eaton Detroit Spring, Inc The most mis-understood and the most mis-applied spring terms What you are about to read is the gospel and anyone who says otherwise is a know-it-all who knows nothing. (all disagreements can be sent to Mike, 3rd generation spring maker with nearly 30 years… Continue reading Spring Load – Spring Rate – Load Rate by Eaton Spring

Drive Shaft Basicsby  Jim  Clark,   Hot Rod  M.D. What:  A solid steel or hollow steel/aluminum tube that transmits rotational power from the output shaft at the rear of the transmission to the input/pinion shaft in the rear differential.  The solid steel or hollow steel shaft with outer housing (closed driveline) is usually housed inside a… Continue reading Drive Shaft Basics by Jim Clark, Hot Rod M.D.

Drive Shaft  HarmonicsDRIVELINE/UNIVERSAL     JOINT CANCELLATIONBy  Jim  Clark,  Hot Rod  M.D. What: Solving the problem of driveline vibration.  Driveline geometry.  The process that can be used to address a condition called driveline/universal joint cancellation, often referred to as adjusting pinion angle.  This process can be used to eliminate the vibration and premature wear caused by improper orientation… Continue reading Drive Shaft Harmonics By Jim Clark, Hot Rod M.D.