Monday, December 2, 2013

The 2 scales trick

Weight is a sensitive topic when working on a ZX7R. There are loads of forum threads around the web quoting dozens of ways to address the heaviness issue with solutions ranging from "buy another bike" to "put yourself on a diet". Now there are some really interesting posts about how to really shave a couple of pounds out of a ZX7R, but you have to know where you're actually starting from.

I knew too much about the bike's real weight before buying, but I'm seeing this as challenging and am pretty sure there's potential to make this green Panzer tank behave. So to size up progress, I bought these 2 mechanical scales last week.

Then the work began. I put the ZXR on the bench, then on paddock stands to have both wheels raised enough from the ground to be able to slide the scales underneath.

With the scales positioned, it was time to measure out which, being alone, turned out to be a tricky operation. I had to lower down the front, then the back while trying to keep the bike up straight but my own weight away. Next time, I'll opt for a simple solution.

Time for the real figures now. The scales measured the bike's weight distribution as being settled this way :
- 112kg rear
- 107kg front
And that's being without a battery and with a drained fuel tank. So with a additional 4kg battery the ZX7R sets a new record high of 223kg. There's room for improvement so let's start the diet plan.

No comments: