2024 Dunlop Cup Round 4

I participated in the 4th round of the Dunlop Cup, which was held under clear, very hot skies.

The vehicle participating this time is the Z650.

The specifications are as stated in the blog post.

The difference was that the Q5 tire was domestically produced and sales were stable, so if we tested it at practice sessions,

I thought maybe I didn't need to use the Q5A in the actual race, so I drove the Q5 from H1.

However, this was the first time the Q5 was used on a Z650, so it took some getting used to.

It felt difficult to push through because I still haven't quite got the feeling for driving at the edge, but can I still be satisfied with the first race?

Putting aside the question of whether 18th place overall is a good or bad result, I'm satisfied with this first race, which is a challenge to see how far we can go with a car that's close to stock.

I realized that I needed a little more acceleration so that the tires would slide a little more. I also realized that the rotation was slow.

Next time I'll try shortening the rear final gear by one and testing with 14-48.

The calculation is to move the axle forward by about 4 mm, but when you look at the relationship between the riding position and the axle position, and the way energy is applied to the front,

If the rear axle is extended by 4mm and acceleration improves, wouldn't that increase the gymkhana potential in relation to the suspension setup?

I think so. When you look at the swingarm angle during actual riding, you can see that it is secured sufficiently, and because the Z650 has a flat link ratio,

I think there won't be any problem if you lower it.

The problem is the banking angle, but in its current state, the footpegs are not rubbing against the stock footpegs, so I think it should be fine for riding.

Well, the next race will be at Dunlop JAPAN, so will the setup be perfected by then?

This year I will focus on the setup and see how close I can get to the current top machines next season.