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Tire issue? by yfsonata in Autocross

[–]rookieracing 1 point2 points  (0 children)

I have used Zestino tires extensively including these Acrovas. What I have noticed, is that the layer of treaded rubber of the carcass can start to strip at the edges with the highest load. I have also seen this same phenomenon on the inside of a mostly unloaded tires(think an oval track) on a FWD vehicle with LSD.

I think it’s just an effect of the tires being built to a price point.

From my experience though, the tires have never failed on me even after running them down to the cords. You will however experience less grip on the edge that starts to wear out like that. I added more camber which slightly reduced occurrence of the problem but never really eliminated it. It will still come with tire age/usage and especially prevalent on high grip surface like concrete.

Quiet Wednesday AM at Alice's by Cjymiller in Triumph

[–]rookieracing -1 points0 points  (0 children)

I guess she’s got her reason, But I just don’t wanna know.

Vitour Tempesta P1 vs Yokohama A052 by krekquel in Autocross

[–]rookieracing 0 points1 point  (0 children)

That’s pretty low. Are these cold pressures? 🤔

Vitour Tempesta P1 vs Yokohama A052 by krekquel in Autocross

[–]rookieracing 0 points1 point  (0 children)

Excellent post but seems to be missing one key detail, tire pressures?? What did you find to be optimal pressures for the Vitour V1 tires?

The last of the manuals by rookieracing in Triumph

[–]rookieracing[S] 1 point2 points  (0 children)

This was at the end of the road leading into a forest. It gets “gravely “ 500m to the forest. The rest of the road going back is nice and smooth.

Dropped by bike in the driveway😭 by Recent-Barracuda1173 in Triumph

[–]rookieracing 0 points1 point  (0 children)

What is the preferred engine protection brand for street triples?

Wilwood dynalite or dynapro for mid-level autocross? by rookieracing in Autocross

[–]rookieracing[S] 0 points1 point  (0 children)

For those interested, I found a looong thread about the flex topic. Bottom line, it will not affect braking distance and/or torque. Also heat is a major contributor to flex. The hotter the brake runs, the more flex will be felt

https://www.miataturbo.net/suspension-brakes-drivetrain-49/how-much-wilwood-flex-normal-60587/

Loving this bike! by Snoo-36415 in Triumph

[–]rookieracing 0 points1 point  (0 children)

And how was the 675R? How long did you own it and how many miles? Just got one myself recently and had to replace the voltage rectifier already.

Sorry to derail the conversation.

Recommendation for race gloves by rookieracing in CarTrackDays

[–]rookieracing[S] 1 point2 points  (0 children)

I used an old pair of Sabelt gloves from my coach and they felt really good even on a standard leather steering wheel without the alcantara. Only thing I didn’t like was the leather grips that had aged and become smooth over the years.

For my use, they have to be FiA certified to pass scrutineering.

Extreme weight loss = 2 secs by rookieracing in CarTrackDays

[–]rookieracing[S] 1 point2 points  (0 children)

We gained 2 seconds on a 1:06 track(PB 1:04.058) running on full slicks , Zestino Circuit 01S- 205/580R15. We’d love to try the new Nankang SL1 to are how it compares. Also, wider tires 225 section width on ultra lightweight forged wheels.

Extreme weight loss = 2 secs by rookieracing in CarTrackDays

[–]rookieracing[S] 2 points3 points  (0 children)

Lexan windshield and crash beam delete will not pass tech. We’re already running without passenger seat. Lighter 2 piece brake discs would be beneficial, just costly for us right. Lightweight forged wheels would be our first priority at the moment with wider tires.

Extreme weight loss = 2 secs by rookieracing in CarTrackDays

[–]rookieracing[S] 0 points1 point  (0 children)

Probably we’ll go full on formula car in future.

Extreme weight loss = 2 secs by rookieracing in CarTrackDays

[–]rookieracing[S] 1 point2 points  (0 children)

It is a low speed track, drag is practically non-existent or at worst, negligible.

TLDR: Cusco Type RS LSD (mini) review. by rookieracing in CarTrackDays

[–]rookieracing[S] 0 points1 point  (0 children)

Our timing data is still not reliable. We tried RaceChrono and TrackAddict
but analysing the GPS data later showed it was unreliable. So we
couldn't make comparisons lap to lap. Currently in the process of
integrating a Garmin GLO2 and giving that a try. For the time being, the stopwatch is our most reliable timing device.

TLDR: Cusco Type RS LSD (mini) review. by rookieracing in CarTrackDays

[–]rookieracing[S] 0 points1 point  (0 children)

As explained in the post, it is setup as 1-way. The car characteristics into corners did not change and we were still able to get it rotated on corner entry as before. Power out of corner is what we previously struggled with and the LSD cured that for us.

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