Heavier on the left than the right

[jmaynard]

I was looking at the weight and balance numbers on N55ZC just now, and noticed something: the left main gear measurement is 20 pounds heavier than the right main. Is this usual for an aircraft? How much effect does it have? (I know that, with just me aboard in the left seat, that effect will be swamped by the weight imbalance, but still...)

 

[Bob Noel]

>I was looking at the weight and balance numbers on N55ZC just now,
>and noticed something: the left main gear measurement is 20 pounds
> heavier than the right main. Is this usual for an aircraft?

I've only seen the couple of W&B for my aircraft, but consider
that some equipment is installed on the left side of the aircraft
and some equipment on the right. In my cherokee, the autopilot
servos, starter, cabin fan motor assembly, and A/C door motor
assembly are on the left, not to mention the gyros, etc behind
the panel.

 

[gismo]

The airplane may not have been exactly level on the roll axis as this isn't required for a proper weighing AFaIK. The fuel load might not have been equal either. BTW, a 20 lb difference at the mains (assuming an 8 ft track) would be equivalent to around 100 lbs in the seats.