NEW - Hot Rod, Rod Eyes
Now available
Fully polished, investment cast, stainless steel rod end. 5/8" RH shank, 1/2" hole, complete with nylon bushings and steel sleeve.
Professional Oval track Dynamometer Testing
You put a damper in the dyno, choose a stroke and RPM, and turn on the motor. The crank turns and the damper shaft moves up and down until you turn off the motor. If you know the crank RPM, and the stroke, you can calculate the maximum damper shaft speed. For example, let’s say the crank turns 100 RPM, and the stroke is I inch. 100 rpm is 1.67 revolutions per second and the length of I revolution is the circumference of the circle traveled by the crank bolt or Pi times the stroke. 1.67 x 3.14 x I inches is about 5 inches per second. This is the maximum speed of the damper piston, and it happens twice each revolution of the crank, once with the piston going up in compression and once again with the piston going down in rebound.
If we keep this example really simple and connect the damper directly to a weighing scale with a circular dial, we can stand there and read the scale pointer directly. What we’ll see is the pointer cycling from 0 to some maximum bump force as the shock compresses, returns to 0, and then peaks out again at the max. rebound force as the piston comes back down. The needle on our scale goes from plus some number to minus some number as the damper cycles from compression to rebound and back. We can just write down the numbers at which the needle peaks as it goes back and forth. A commercially available shock dyno uses a computer to read the load cell and store the data.
All these numbers and graphs are fine but that is all they are, numbers and graphs. The real art to shock diagnosis with respect to how this data collected can be translated into usable information about the specific handling of your vehicle is the dyno machines operators understanding of the needs and characteristics of the shock being tested, the specific type of vehicle and the corner of the car it is to be fitted.
Coil Over Springs
QA1 and Carrera coil springs are properly engineered to withstand the loads of todays racing suspensions at a fraction of the cost of the Professional competition coils.
7” 8” 9” 10” 12” and 14” free lengths available.
Penske / Carrera / Afco
Since Penske shocks were first introduced to New Zealand oval track racers by Cardwells, Sprintcar racers in particular have experienced huge gains in mono tube function and understanding which has lead to more advanced car stability and speed.
The Carrera name has long been around New Zealand oval tracks and since there acquisition by QA1, the QA1- Carrera merger has produced a oval track shock giant.
Afco steel body 10 series shocks and coil kits are still readily available from Cardwells, although the lack of components for repair and customizing out side the USA has seen us move away from there aluminum models in favour of the more modern and fully rebuildable QA1 aluminum body shocks.