Yes the email waiting list is still good.
However I will post up here for sure when the parts are available.
I am going to manufacturing this week, so figure 2 months to be safe until these are available.
You guys will be the first to know!

As for power output of our part,
I tested our ESG752, as well as a stock stator in house on my test rig.
I did not have an OEM Roadstar flywheel available, and I wanted to proceed quickly to on-bike testing, so I tested with a similar diameter but weaker magnet flywheel I had in shop.
This will not give you exact numbers when used on the bike with the exact flywheel, but is close and is a good comparison test between the Electrosport stator and stock stator.

With many other bikes I have found manufacturers claimed power output be extremely generous (and often not possible at all!) and I believe this to be the case with these OEM Roadstar stators. Also, at what voltage do they claim there current rating? We do all of our testing for power output at 13VDC, which would put your battery slightly above breaking even, so just barely charging. This gives us realistic power output numbers at the critical voltage for keeping the bike running, so all the numbers I quote are at 13V DC at the battery.

From what I have seen so far, the stock stator is rated by Yamaha to be good for 21A for a 99-04 model, and 29A for a 05+ model. You might find it odd that the stock regulator is rated for 18A for 99-04 bikes (remember, this is supposed to be a 21A stator!) and 35A for the 05+ bikes (Supposed to be a 29A stator). The 18A regulator rating for the 21Amp stators is your first clue that you're never actually getting anywhere near 21Amps out of that stator!

Anyways, on to some numbers.

With this (incorrect) flywheel, I measured 210W @ 3500RPM (which I picked as freeway cruising RPM) This would mean 16A @ 13VDC. I measured a maximum of 230W output from this part at 5500+ RPM (About 17A @ 13VDC).

For the Electrosport ESG752 and the same flywheel, I measured 260W @ 3500RPM, meaning 20A @ 13VDC. I measured a maximum output of 286W at 5500RPM+, which is about 22A @ 13VDC.

So although these are not exact numbers due to the flywheel, it is a good comparison test between the two stators. Our stator begins producing power lower in the RPM range compared to the stock stator (will produce 10A @ 13V = 130W by 2000RPM), so although you may not be charging the battery at idle with your lights on, you will be breaking even.

I will try to have an OEM flywheel here when I get the parts in from my manufacturer and get you guys EXACT numbers. You can figure this to be pretty close though, and I would attribute alot of this to Yamahas extremely generous ratings on it's OEM stators!

Let me know if you have any more questions.

Evan