Thats what the mags that dyno test say... 10%.... Of course I have no way to verify this but the loss on the top-side of the RPM band is slightly noticeable. The drag force is exponential and rises with the RPM...
I'm still doubtful, but I don't care enough to do any research on it or pull out the physics book, so ok.
I won't argue about less to haul around but keep using pullstarters for a year and then come back and talk about reliability; they all break over time.
Even if you don't pull more than 9 inches or so out, it is still going to break before the other options.... and it WILL break....
And it takes what, 5 minutes to fix? I had mine completely apart the other night for the first time (had to reverse the one way bearing to put a wrench on it getting the flywheel nut off when I put my MIP clutch on) and it didn't take much longer than that.
How do you manage to get 9" out anyway? Most of my pulls are 6" or less, and I probably have 20" of cord, even after the ~4" I lost the other night.