DaleSpam,

Interesting how you can get so deep in the trees that you don't see the forest. Nothing gets stretched and will break because nothing physically contracts. SR (as I have claimed numerous times) in nothing more than a useful mathematical construct but is only an illusion of motion measurement and not consistant with any physical reality.

Given your scenario when the tank is at rest to the earth and where the axles are 30 feet apart and the drive wheels are 3 feet in diameter:

1 - In the resting case the total length of the track is 69.4248 feet in the tank frame and earth frame. The circumference of the wheels are 9.4248 feet. You can take my word for it or calculate it yourself it is straight forward.

2 - Tank in motion at 0.866c relative to earth:

a - Earth frame: The ground track is 30 foot long. The distance between axles is only 15 feet and the upper track by velocity addition is 0.98974c and gamma would be 7.0 such that the track is only 4.28486 feet long. The circumference of the wheel is that of an ellipse with a 2/1 aspect ratio which has a 7.54094 foot circumference.

Total track length is 41.8258 feet; however it physical doesn't fit since the lower track is 15 feet longer than the axles driving it and the upper track is 10.71514 feet to short to reach the driving wheels since the axles are 15 feet apart.

b - Tank Frame: In the tank frame both the upper and lower track have a relative velocity of 0.866c and hence are both only 15 foot long sections but the axles are still 30 foot apart.

The circumference of the wheels is pi*d/gamma = 4.7124 feet.

The total track length is 34.7124 feet.

Again the problem is obvious in that the moving track sections are to short to fit the fixed distance between the axles.

Giving SR the maximum benefit of doubt and wraping excess track from the bottom and around the drive wheels to the upper track space, in case 2a above, you have 49.7124 feet of track now being contracted by a gamma of 7 or an upper track section of 7.1 feet.

Still 7.898 feet short of reaching the drive wheels.

This is a clear explanation as to why SR is simply crap. Tension in the track is not the same in every frame as claimed by SR's equality of frames physics. The track breaks in one frame but not the other.

I would like to thank you for posting such a clear explanation as to why SR is simply crap.