Saw this Harley on the back of a 5er yesterday

fj12ryder wrote:

valhalla360 wrote:
A swivel wheel will be similar but you have to find the center of gravity of the swivel wheel trailer and run a similar calculation between the hitch pivot point and the swivel trailer wheels to find out how much is supported by the wheels vs the hitch.

Still no way to violate the laws of physics. 800lbs at 10' behind the axles and pin 20' in front of the axles (adjust as needed for your particular trailer) will result in approximately half the weight of the bike coming off the pin weight.

If the guy who is claiming it's only 40lbs really didn't change anything else, he needs to get his money back...but the scales are usually pretty accurate so I'm still betting he changed something and didn't realize it.

Geeze I don't believe you people. I have the scale tickets, and they work. The weight on the back was 600 lbs., not 800 lbs. and like Rhagflo says, the tandem axles are not a perfect fulcrum.

Looks like you need to get money back on your math classes.

OK with 600lbs, it should be close to 300lbs off the pin weight (assuming the bike plus the lift combined are only 600lbs). If you had said 260lbs (300lbs- your 40lbs), I might chaulk it up to the imperfect piviot point of a double axle.

Tell you what, you pick the location of the pivot point (even if it's not reality) and as long as it's somewhere between the two contact points of the tires, the math still works out pretty close to the numbers I'm showing.

I can guarantee you are missing something or made a math error to come up with 40lbs off the pin weight.