Streetstock tyres..

[sAsLEX]

I believe that people should stop worrying about slicks in wet crap.

Your on a 150CC motorcycle, top speed of maybe 160.... Tyres that narrow arent going to hydroplane.. not at that speed.

It's a load of crap. let people run what they want. If they don't care about using slicks in the wet, then so be it...

Hmm well I ride 1.25 inch slicks every day. I live in England at the mo and it rains every day. Slicks, even on light bikes and skinny sizes, do offer rather reduced levels of grip in the wet. The propensity for the rear to over take the front is greatly exacerbated as well, and for a learning level class this might not be ideal.

[Kickaha]

From my Personal prospective as a codgy old racer type Im not convinced that slicks work in the rain. Yep I understand about the tyre compound and all that but in a genuinely wet meeting I just can't see how its possible for the tyre to work.Slicks are NOT desighned to work in the rain. My concern is that the people riding these bikes are inexperienced racer who don't know better than to go out in pissing rain on slicks. The talk that they are "only" doing 160 km/h to me is frightening.

They may not be designed to work in the rain but they do, and they work very well on low powered light bikes even if it's pissing down, I've raced on them plenty of times and so have a lot of others down here

in fact I've had guys fall off in front of me that were on treaded tyres

[Buddha#81:Me]

in fact I've had guys fall off in front of me that were on treaded tyres

Who would that be refering to? I'm with Kick slicks offer very good traction on low powered bikes, more than most riders give them credit.

On a side note the sooner the S/S dudes go to treaded tyres the sooner the supply of slicks will return to the bucket guys.

[FROSTY:Me]

They may not be designed to work in the rain but they do, and they work very well on low powered light bikes even if it's pissing down, I've raced on them plenty of times and so have a lot of others down here

in fact I've had guys fall off in front of me that were on treaded tyres

I'm hearing ya dude.I just can't see how its possible
I think its one of those cases like the bumble bee--its not soposed to be able to fly but yet it does

[sAsLEX]

I think its one of those cases like the bumble bee--its not soposed to be able to fly but yet it does

That's what happens when you make assumptions and simplifications to help your math and physics describing how silly BBs are when out on the piss and because of your status your statement becomes world famous.....

The story goes that a noted Swiss
aerodynamicist, whom McMasters does not name, was talking to a biologist at
dinner. The biologist asked about the flight of bumble bees and the Swiss
gentleman did a "back-of-the-napkin" calculation of the kind I described
earlier, assuming a rigid smooth wing an so on. Of course he found that
there was insufficient lift and went off to find out the correct answer.
In the meantime, the biologist put the work around that bees could not
fly, presumably to show that nature was greater than engineering, and the
media picked up the story. The truth, then as now, wasn't newsworthy, so a
correction was never publicized

John H. McMasters (Boeing) gave an
account of the back-of-the-envelope calculation in an article in
American Scientist a few years ago. Having done a decent survey of
the literature on insect flight, I find the account entirely credible.
But insect flight aerodynamics are fraught with complexities -
continuously changing angles of attack, interactions of opposite wings
at the top of the stroke, issues of how many chord lengths of travel
are needed for full lift to be developed, vortex shedding and
reformation (with opposite sign) at the bottom of the stroke, spanwise
flow, etc., etc. All of which makes back-of-envelope calculations
next to hopeless.

[FROSTY:Me]

Saslex---Geez boy you need a hobby or something--You got WAAAY too much free time

[Tim 39]

A good set of treaded tyres should last 2 full seasons.

This is the problem, the treaded tyres only last about 7 meetings for a competitive rider! whereas the slicks wer lasting a full season.
and I watched Joseph Blackburn (a 150 rider when I was riding them too) kneeslide almost every corner of teretonga in the wet on slicks! a guy on tt900's fell off trying to keep up (against logic but it happened)

[Ivan]

One issue I see,

150 street stock the entry class alot of beginners,

A slick is designed for a warm track surface to offer the most contact patch to the ground and the tire is warm so sticks,

when its wet yu have a layer of water between your slick and your contact area of tarmac,


A wet is designed to be used in these conditions,

It is cut and the compound is softer to grip at lower temps and speeds,
The cuts are designed to pump water aside for more grip level on the ground but also these grooves when water running through them cool the tire,


160 ks is still fast for limited grip

I say keep it as productuon tires

[FROSTY:Me]

Was that the teratonga round of the nats tim??---

[Tim 39]

Was that the teratonga round of the nats tim??---

nah this was the 2005 nationals, but it was of course...wet (bit of a pattern here)

[oyster]

By design or by accident, (who knows), the South Island Streetstock program is very successful. It's still growing, it's training and support culture is hugely in excess of anything MNZ requires, and it's producing a lot of fine young riders. But most importantly, it has a very good safety record. We think this part is certainly no accident, a lot of work goes into this. So we can say with confidence that characteristics of tyres, all types, all conditions has been well analysed, and most, if not all accidents are investigated. From this comes the finding that TT900GP ridden hard canlast as little as 2 meetings before their capabilities rapidly fall off. And of greatest concern is that they become absolutely lethal in the wet. In contrast, grooved slicks are very predictable, and perform well, wet or dry until they're thoroughly worn out. Which in the similar "hard riding" case, takes about 4 times as many k's.
Consider the situation of the 13 year old lap record holder who put 36 entries in his log book before his 14th birthday, racing over 3500km on his Streetstock bike alone. Keeping SAFE tyres up to this rider is a pretty daunting exrcise. Sorry if I offend, but ALL of the critics of slicks in wet, have either no experience of Streestock / Min Road Race on slicks in the wet, and/or have not investigated the safety record of such practices under the program run in the South Island, in the last few years.

[Tim 39]

One issue I see,

150 street stock the entry class alot of beginners,

A slick is designed for a warm track surface to offer the most contact patch to the ground and the tire is warm so sticks,

when its wet yu have a layer of water between your slick and your contact area of tarmac,


A wet is designed to be used in these conditions,

It is cut and the compound is softer to grip at lower temps and speeds,
The cuts are designed to pump water aside for more grip level on the ground but also these grooves when water running through them cool the tire,


160 ks is still fast for limited grip

I say keep it as productuon tires

to take the flip side of the technical approach, slicks are designed for racing and DOT tyres are designed to ride to work and back

[FROSTY:Me]

By design or by accident, (who knows), the South Island Streetstock program is very successful.

Not blowing smoke here mate BUT I for one know damb well why the program works so well and its your doing.
Re the tyres.My experience in running slicks is limited to bucket racers and bigger machinery.In both cases The slicks were orrible in the wet

[Buddha#81:Me]

Not blowing smoke here mate BUT I for one know damb well why the program works so well and its your doing.
Re the tyres.My experience in running slicks is limited to bucket racers and bigger machinery.In both cases The slicks were orrible in the wet

You obviously ran different slicks than we do on buckets down here. I (along with several others) ran slicks a Teratonga in standing water and at several other wet meets and have never had an issue with slicks in the wet. I have more confidence in slicks in the wet than ANY road tyre. I wouldn't mind trying a set of wets to see how good they are.........

[Sketchy_Racer]

Isn't quite funny that the only people that have a opinion against it are the ones that don't have any experience in the situation??

The proof really is in the pudding.

I guess some are just to ignorant to see that maybe