tyre patterns/wear

[boomer]

Guys,

anyone help me here? I spent the day at Puke yesterday and noticed the left hand side of the rear has a strange ass pattern developed..any idea's?

[boomer]

heres the right hand side

[Slingshot]

That's called a chicken strip...but don't worry, it looks like it's fairly even on both sides :)

:dodge:

[jonbuoy]

A heavy right hand and Dunlop sportsmax. - that might be the problem. I think they just squirming and slipping under the power. I don't them at all.

[beyond]

Yep, you do that when you power out of corners hard while still tipped over.
Happens on my 1400 often. On Dunlops, the leading edge of my tread used to roll up like cigars. :) Watch ya don't setup a tank slapper on a lighter bike.

[beyond]

One more thing, if you were pwoering out of the corners just as hard on the right side as well, you might want to check your rear to front wheel alignment. The chain adjuster markers aren't always correct.

[motobob]

Guys,

anyone help me here? I spent the day at Puke yesterday and noticed the left hand side of the rear has a strange ass pattern developed..any idea's?

What tyre pressures were you running? should be 30 psi both ends.

I've also being told that you can pick up rubber from the cars out there depending on what cars are out there of course.

Had similar pattern on some 208 Dunlops but strangely not every time on Puke. I had stuff you could peel off.

I'd change the tyres anyway, to Michelins.

[boomer]

THanks Guys,

36 and 32 psi. You use 30 front and back Motobob on ya cibbyrr? ummmm. And yeah the v8's were out and some formula 3 (?) toyota racing team. The drifters were banned because of the v8 racing soon ... hehehhehe

So you reckon michelins huh? which ones; It wont belong before the backs ready to go and the fronts due too:no: 4 months 10,000k, 1 front tyre and 2 rears and 3 services... this aint a cheap hobby :doh: :drinkup:

The right hand side as you can see was fine and you all know Puke is a all right handers; so it confused me. The only 2 hard left handers are coming out of the hair pin and setting up the next two lefts before coming onto the right hander for the front straight.

Beyond; thanks for that. I had the Ohlins damper on her and had it wound up hard too so no signs of wobbles; only light front ends :ride:

I'l check that the alignment is right cos i did set the chain the night before and also had the whole back wheel off on the way to the track.. but thats a different story

[Two Smoker]

First of all lean it over more... It looks like your tyre was just being out performed by the track and over heating... The answer to solve this problem is to go to a more race based tyre... If you keep getting the problem, your spring is to soft. I generally use 30-31 psi in the rear tyre at the track...

[motobob]

So you reckon michelins huh? which ones; It wont belong before the backs ready to go and the fronts due too:no: 4 months 10,000k, 1 front tyre and 2 rears and 3 services... this aint a cheap hobby :doh: :drinkup:



Pilot Powers would work well. You can't go wrong on tyre choice but I would forget the D218's you have on (I think) and most Dunlops. They won't last as long as the other premium brands.

High tyre pressures equal long life and lower pressures equal lower life but better grip and slower steering. Which is OK for track days. What ever makes you comfy. Grip certainly makes me feel comfy at the track :niceone:

Hope you enjoyed yourself out there Boomer.

[NordieBoy]

First of all lean it over more... It looks like your tyre was just being out performed by the track and over heating... The answer to solve this problem is to go to a more race based tyre... If you keep getting the problem, your spring is to soft. I generally use 30-31 psi in the rear tyre at the track...

Overheating would be on the right then.
The funny patterns are on the less used left side.

[motobob]

So you reckon michelins huh? which ones; It wont belong before the backs ready to go and the fronts due too:no: 4 months 10,000k, 1 front tyre and 2 rears and 3 services... this aint a cheap hobby :doh: :drinkup:



Pilot Powers would work well. You can't go wrong on tyre choice but I would forget the D218's you have on (I think) and most Dunlops. They won't last as long as the other premium brands.

High tyre pressures equal long life and lower pressures equal lower life but better grip and slower steering. Which is OK for track days. What ever makes you comfy. Grip certainly makes me feel comfy at the track :niceone:

Hope you enjoyed yourself out there Boomer.

[Sensei]

Why's that back not of the edge ya FAG . Looks like the suspenion needs a tweek as the tyre looks to be doing all the work . Inlinefour's was way out at standard settings to where I put them may need to bring that CBR dow here to the Naki to finsih off those Tyres :scooter: :nya:

[Toast]

Boomer, it's actually quite normal for the left to get more shredded at Puke...it may be a right turning track, but by the time you come in to those two left handers, very hard on the gas for the first one at least, the left side of the tyre is cold, so it tends to spin more, and the cold rubber shreds easier. I've noticed it quite often, Rear get worn down more, but the left looks mankier.

As for pressures, you had 36 in the back and 32 in the front eh? I'd keep the 32 if you're happy with how it's turning in, just drop the rear a couple of psi each session.

As for tyres: buy new ones. I'd go Pilot Powers, and if you reach their limits, you're doing pretty well.

[quickbuck]

After looking long and hard at the pics, I have to agree with Sensei. Not knowing Puke 100%, but guessing you were going up through the gears on the lefthander out of the hairpin, I would suspect that your tyre was getting a bit of grief, and the shock wasn't having a bar of it (or maybe it was just a bar, if you know what I mean).
Good to see you took it to the track though :2thumbsup

[2much]

Seen similar things at KFC, they're called chicken strips. Best fix is to grow some balls and harden the fuck up ya little pussy!

TS is right, you're cooking your tyre and shredding it. Drop the pressure or get some decent track tyres.

[boomer]

i thought i had her tipped right over; Obvioulsy need to get braver..

some pics of the day if your interested :) Pics (http://www.kiwibiker.co.nz/gallery/thumbnails.php?album=320)

[Motoracer]

Here's the correct answer.

Problem is that you had 36psi on your rear. Pukekohe park race way is predominatly based on right hand corners. It only has 2 left handers really. That means that the left hand side of your tires will not get up to the same tempreture level as the right hand side. When you run higher air pressure on your tires, The tires have even a lesser chance of heating up.

Thus when you were going through your left hand bends and putting on your power, you were basically 'burning' cold rubber.

On the road, you do save your tire by running higher preasures but on the track since you are going harder, the higher preasures lead to tire tempreture that is cooler than what is ideal, which in return doesn't allow the rubber to grip very well. The ruber then insted induses into a slip/spin and you end up tearing and chewing up your tires. For a perfect example of this, please reffer to your own pictures of your left hand side of your tire.

So next time you are on the track, try 29 PSI (very cold atmospearic temp), 30 PSI (medium temp), 31 PSI (hot temp) and you will notice that the tires will get the chance to get up to proper riding tempreture and you should have a more even wear through out.

[sugilite]

Well put motoracer :yes:

[quickbuck]

Top advise there motoracer.
I will keep that inmind next time I'm out on the track (Manfeild).

Cheers.

[texmo]

BOOMER you are my idol!

[boomer]

BOOMER you are my idol!


Why's that me old?? :ride:

[boomer]

Why's that back not of the edge ya FAG . Looks like the suspenion needs a tweek as the tyre looks to be doing all the work . Inlinefour's was way out at standard settings to where I put them may need to bring that CBR dow here to the Naki to finsih off those Tyres :scooter: :nya:

cos im a nana!!! i've set the sag and walloped the fucker up on hard throughout; We'll see how she handles now :yeah:

[Kornholio]

cos im a nana!!! i've set the sag and walloped the fucker up on hard throughout; We'll see how she handles now :yeah:

You GO Girl!!! :scooter:

[Fishy]

i thought i had her tipped right over

:rofl: :rofl: :rofl: :rofl: harden up Boomer, you've still got miles to go over :Pokey:

[boomer]

:dodge: :dodge: :dodge:

[Lou Girardin]

I'd say toast is right. That looks like cold tearing - the tyre's not up to temp on the right side.

[thehollowmen]

hrm this explains why the center of my tyres shredded in the last dunedin trip.. a little underinflation, a little cold..