ReveD Takahiro Lecture on Damper explanation [ English Version ] Part 4

Lecture explanation ⑥ Damper Podition 4/4

The last of the damper position is

It is a contraction side stroke!

We will also talk about the relationship with the piston position (^^ ♪

With the chassis landing on the ground

The gap between the circles is a reduced stroke

I talked about the extension stroke last time, but if this contraction stroke is small, the damper will bottom when rolling, hindering the roll and making it easier for the rear to slip out.

So how do you secure a contracted stroke?

Whether to raise the damper mounting position

If you have used a long rod end, replace it with a shorter one to handle it!

I talked about the above two times

This is the method for adjusting the expansion / contraction stroke!

If you can adjust it firmly, it looks like this

Next, this piston position

The characteristics of the damper change depending on this position, so I will explain it.

As you can see from the figure, as the rod end gets longer,

The reduction stroke is reduced and the piston position is raised.

How does each change depending on the piston position?

① Low piston position

When the damper contracts, the rebound is weak, so it contracts smoothly, improving corner turning performance, but low vertical traction

② In the piston position

It is difficult to make a difference in characteristics on both the extension side and the contraction side, and the effect is stable from the beginning to the end of the corner.

③ High piston position

When the damper shrinks, the repulsion becomes stronger in the back, improving vertical traction, but it also hinders the roll, so if the piston position is too high, it becomes peaky at the corner

So how do you change the piston position?

Basically, it is adjusted by the length of the rod end.

If you change the type, it will change too much 💦

In that case

Use M3 spacer

By doing so, you can finely adjust the piston position rather than using rod ends of different lengths.

At that time, be sure to adjust the tightening amount.

Please match the height (^^) /

By the way, the correct answer is to have a spacer under the retainer.

Be careful not to come over the retainer like this

Currently, I have been unable to go to the circuit for a long time,

Even if you can't run and try, is the rear stroke of the current machine still secured? I think you can check, so please check it out!

Tomorrow is about camber angle!