I like the enthusiasm Steven, but I see a lot of problems with Zero and the Isle of Man.
Technical problems:
- The stock SR has a top speed that barely crests 100mph on the strait, so it's average would be laughable compared to the race bikes.
- The 75-7R motor is very power dense for a stock motorcycle, but the ones Mugen and Motocysz use are behemoths in comparison.
- Even if the powertrain were modified extensively, the frame is too wide at the bottom and the pegs hit the ground to soon. The SDS models were designed to be commuters, not race bikes.
- Unlike Pike's Peak, I do not believe there is a stock catagory in Isle of Man, only professional vs amateur.
With the smaller rear sprocket installed, the Zero SR should be able to hit 110-120 mph; and I believe various racers have indeed seen these speeds on track.
Other benefits to the smaller rear sprocket: shifts the power peak to 70-100 mph instead of 50-70 mph, improves efficiency at higher speeds. Disadvantages: slower acceleration below 70 mph.
I would be a little surprised if the SR could surpass a 90 mph lap. I don't think battery capacity would be a concern; if ~17 kWh is enough for the 100+ kW prototypes, a 50 kW thermal-limited bike should be fine with 13.5 kWh. Might not even need the power tank.
Risk/Reward:
The Isle of Man has an average mortality rate of 2.3 riders a year. Consider the fact that at Zero and Hollywood Electrics, the racers are also the ones that run the business. Zero does not hire professional racers. Kenyon Kluge (former AMA racer) is the leader of K Squared Racing and MotoZero. He is also the head of Electrical Engineering. If he were to compete and be seriously injured or worse, Zero would have a serious problem on their hands.
Zero has used professional racers
before, though well in the past.
No track is immune to risks, though IOM is more dangerous than most. Pikes Peak is also up there. The MotoAmerica tragedy this last weekend shows that even a well-prepped track with no "natural" dangers can still be deadly in the wrong circumstances.
Racing and Production:
While it is true that racing helps develop the product, there is no need for a company to have a race team, create a competition-only bike like the Empulse RR, or send them to the other side of the world. In Zero's case, all they need to do is go north to Sonoma Raceway, south to Mazda Raceway Laguna Seca, or east to Hollister Hills where they do all their dirt testing. All three locations are probably within the bike's range of the headquarters. Zero has on occasion put on special events, but they are generally world firsts. For example, in 2009 Zero hosted the world's first 24 hour electric enduro race using the MX's battery swap system. It was a great way to demonstrate the capabilities and ruggedness of their product. A one-off Isle of Man racer would not have the same effect.
If you and some of Zero's customers wanted to participate in the amateur Isle of Man, I say give them hell. But for now, I don't see a reason for Zero to get involved.
I don't believe a mass-production electric bike has ever raced at IOM .. discounting the Enertia TTR. Fielding a factory-backed Zero SR would indeed be a first .. though I don't disagree that the cost-benefit analysis is difficult.