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-   -   scrubbing in................ (http://forums.sv650.org/showthread.php?t=111565)

maff 04-06-08 04:50 PM

scrubbing in................
 
iv purchased a pilot road 2 front tyre off fleabay, it arrived today and alls well, all i have to do is fit it

question is about the scrubbing in. when i had a rear put on at superbikes it was semi scrubbed in and was told to take it easy for the first 50-100 miles. with this new front there has been no srubbage at all, even the injection nipples or whatever they are called are on the middle of the tyre so...........

whats the best way to scrub a totally unscrubbed tyre?

TIA maff

Stu 04-06-08 04:55 PM

Re: scrubbing in................
 
ride on it carefully for the first 100 miles (ignoring any wet miles)

maff 04-06-08 04:59 PM

Re: scrubbing in................
 
so basically just shut up stick it on and ride.....;)

Stu 04-06-08 05:06 PM

Re: scrubbing in................
 
;)

Dave The Rave 04-06-08 05:13 PM

Re: scrubbing in................
 
Scrubbing is misleading as it is the heat that does the job. I have heard about people using a sheet of sand paper to scrub tyres! It is the heat that gets rid of the oily layer on the top. I am extra careful for 100 miles and don't go bersekr before I get 200 miles on the tyre.

Stu 04-06-08 05:44 PM

Re: scrubbing in................
 
http://www.cameronautotech.co.uk/tyres%20text.htm

G 04-06-08 08:04 PM

Re: scrubbing in................
 
I have done 200 miles on my new tyres, so tonight I thought it would be enough as I had slowly been increasing lean angles, so went quick into a corner and had a massive slide :(:(. I havnt had any massive heat in the tyre though to be fair as I've not been over 90mph or 7.5krpm :( I think maybe i need to wait until i can get more heat in them.

Would dodgy tyre pressure cause a slide like that?

thebluelion 04-06-08 11:59 PM

Re: scrubbing in................
 
Quote:

Originally Posted by Stu (Post 1529704)


Thanks Stu for that makes good reading for a newbie, i am about to get a new set myself, must take note

neio79 05-06-08 02:42 PM

Re: scrubbing in................
 
Quote:

Originally Posted by G (Post 1529839)

Would dodgy tyre pressure cause a slide like that?


unlikley!! you just hit the slippy bit

ThEGr33k 06-06-08 12:50 AM

Re: scrubbing in................
 
Quote:

Originally Posted by G (Post 1529839)
I havnt had any massive heat in the tyre though to be fair as I've not been over 90mph or 7.5krpm :( I think maybe i need to wait until i can get more heat in them.


Best way to get the heat in the back is accelerating... For obvious reasons. :D

Unless you can cook your bacon on the disc's and a Egg on the back tyre they aint been punished enough.

Bad tyres. :p

wheelnut 22-07-08 06:16 PM

Re: scrubbing in................
 
Quote:

Originally Posted by Stu (Post 1529704)

What a sensible chap, and honest too!

Warthog 23-07-08 06:38 PM

Re: scrubbing in................
 
I had my new Z6 fitted just now, and rode about 20 miles home. I went very easy, but then took it up fairly fast. Have to say I couldn't feel any twitches! I will still take it easy until 100 miles, but the Z6's feel very secure already.

Blue_SV650S 23-07-08 06:51 PM

Re: scrubbing in................
 
" Dynamometer Testing

Dyno testing places extremely high loads in concentrated areas on motorcycle tyres. It is possible that damage which may be invisible to the naked eye can occur to the tyre's construction during dyno runs. It is also possible that this damage may result in tyre failure later. Tyres that have been used for dyno testing should not then be used on road or track. Dyno tests should only be carried out on worn out tyresm which can then be discarded.
"

WTF!! ... how is being on a dyno any different to being on say a motorway?? :scratch:

Warthog 25-07-08 08:37 AM

Re: scrubbing in................
 
Quote:

Originally Posted by Blue_SV650S (Post 1576788)
" Dynamometer Testing

Dyno testing places extremely high loads in concentrated areas on motorcycle tyres. It is possible that damage which may be invisible to the naked eye can occur to the tyre's construction during dyno runs. It is also possible that this damage may result in tyre failure later. Tyres that have been used for dyno testing should not then be used on road or track. Dyno tests should only be carried out on worn out tyresm which can then be discarded."

WTF!! ... how is being on a dyno any different to being on say a motorway?? :scratch:

I was just chatting to the mechanic at my MOT and he showed me a Pilot Sport rear tyre that had blown 100 miles after a dyno run. He was surprised that they hadn't told the guy you have to throw away the tyre after the run. He explained that yes it was similar to going at high speed on the motorway, but because you are stationary you don't get the wind cooling it down, so the tyre overheats and as I saw on the knackered one in the garage, the rubber came away form the carcass. Wonder how many people on here didn;t know that and have had their bike dynoed??

Blue_SV650S 25-07-08 08:45 AM

Re: scrubbing in................
 
Quote:

Originally Posted by Warthog (Post 1578053)
I was just chatting to the mechanic at my MOT and he showed me a Pilot Sport rear tyre that had blown 100 miles after a dyno run. He was surprised that they hadn't told the guy you have to throw away the tyre after the run. He explained that yes it was similar to going at high speed on the motorway, but because you are stationary you don't get the wind cooling it down, so the tyre overheats and as I saw on the knackered one in the garage, the rubber came away form the carcass. Wonder how many people on here didn;t know that and have had their bike dynoed??

Overheating!?!? oh come on, a dyno run is what a couple of 5-10 second bursts?! :scratch:

It might have some basis, but I am not convinced (yet).

the_lone_wolf 25-07-08 08:51 AM

Re: scrubbing in................
 
i put new tyres on the KTM, and scrubbed them in on my first track day, 30 miles from new to this:

http://img68.imageshack.us/img68/3104/dscf7044dd3.jpg

get them on, find a hot dry day and go ride, just don't push it until they're hot

Warthog 25-07-08 12:11 PM

Re: scrubbing in................
 
Quote:

Originally Posted by Blue_SV650S (Post 1578059)
Overheating!?!? oh come on, a dyno run is what a couple of 5-10 second bursts?! :scratch:

It might have some basis, but I am not convinced (yet).

:smt102 it's just what he said! But the thing is, friction can make things hot very quickly (rub your naked back on some carpet quickly if you don't believe me :-P) and even brake discs are pretty damn hot after one of two hard brakes. So maybe it is possible. Do a dyno run and test your tyre temp out?

G 25-07-08 12:22 PM

Re: scrubbing in................
 
Scrubbing in a sports tyre, whilst trying to run in a new bike is not much fun at all.....you cant really get the tyre upto temperature sticking below 650krpm

Blue_SV650S 25-07-08 12:35 PM

Re: scrubbing in................
 
Quote:

Originally Posted by Warthog (Post 1578355)
:smt102 it's just what he said! But the thing is, friction can make things hot very quickly (rub your naked back on some carpet quickly if you don't believe me :-P) and even brake discs are pretty damn hot after one of two hard brakes. So maybe it is possible. Do a dyno run and test your tyre temp out?


Lets put it this way ... my old engine tuner never said anything of the sort when he did/dynoed my bike ... and he must have dynoed thousands of race bikes over the years!! ;)

He did refuse to do a dyno my bike when I gave the bike to him with a wet on ... but he said that was coz it'd give a funny reading ...


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