intoflatlines
Drag Race Newbie
Agreed, my post wasn't really directed at you. It was more towards people in general that have the mindset that "Car X has a rigidity of 30,000 Nm/deg, car Y is 25,000 Nm/deg. Car X must = better racecar!"
6
Torsional Rigidity Strength - Car List
- Thread starter APRMK6GTi
- Start date
BAM its mitch
Go Kart Champion
Another thing is that based on the description of the test, wheel base would play a very large factor in the results.
Example: I'll try to twist a 1 foot long piece of flat steel and you try to twist the same piece of steel but only 1" long. Bets on which one deflects easier?
Example: I'll try to twist a 1 foot long piece of flat steel and you try to twist the same piece of steel but only 1" long. Bets on which one deflects easier?
RacingManiac
Drag Race Newbie
Well it depends on how they do the test. The measurement already take all those into account. Typically on race cars, you do a torsion test from hub to hub. You replace the suspension with solid members, then fix both wheel on an axle on a fixture through the hubs, then support the front end over a pivot of somesort(but not fixed, just a point support), then load one of the wheel of the other axle with a known load, then measure the deflection. Based on the load, the length of the moment arm(point which the load applies to the chassis centerline), and the deflection you arrive at a value. This measurement takes into the account of the compliance of the suspension members also. You can also fix the chassis on a table without suspension components and load the opposite end of the chassis and do the same measurement, which does not take suspension compliance into the account.