Patched Tire Trackday

[actionong]

One week after I got new tires, there was a nail in the rear. Being the cheap bastard that I am, I got it professionally patched at Hare Racing.

I've had 3 trackdays at a B- pace and the tires are holding up fine. Tires are Pirelli Diablo's, nothing fancy. So far no slippage etc. or questionable behaviour from the tires, so I'm keeping them for a bit more.

I also use full synthetic car motor oil because it's a dollar cheaper per quart than m/c oil.

If my motorcycle tire falls apart or the engine blows up, you guys will hear about it. and know to avoid it in future.

[Boba]

Godspeed, brother.

[Kalvin00]

RIP..

[elaineo]

stop being so friggin chinese!! this is your BIKE you're talking about... :p

[rumblephish]

I dunno know if I would ever do that. Heck, I wouldn't ride ANYWHERE with a patched tire on a bike for very long. Just cautious I suppose. Glad it's holding up for you, but the price of a new rear tire to ensure nothing is going to happen would be a wise investment. Don't be cheap when it comes to your safety.


Things you should NEVER go cheap on when riding...

1. Gear
2. Tires
3. Brakes
4. General Maintinence

[Wet Shrub]

I guess if the nail was in the center of the tire that would be one thing but on the edge where the carcass flexes a bunch, I don't think I'd trust it. Still, I would stick to street use on it, if anything.

You are brave putting anything but Extra Virgin Olive Oil (EVOO) in your Ducati. Those Italian bitches be high maintenance. :teeth

[paroxysm]

Please don't do a trackday on a patched tire. Commuting, sure, but not a trackday. Remember that you're not the only one out there. Running a patched tire puts everyone in danger.

[GhostRider]

I'll have to seriously warn my friend in B- class to never get near a yellow duc anymore.

please consider.... on a track, tires are under extreme stress, and as the temperatures rise, it
s only gonna get worse.

and IF your patch goes, it goes fast.... and you'll go with it.

Seizing up your 15K investment and turning it into a paper weight, that's your decision. But please dont put others at risk for your own foolish lousy cheapness.
(hell, IF you're so cheap, why did you EVER buy a DUC???)


.... i just dont understand people ....

[allergic2death]

A danny i have a set of qualifiers with 400 miles on them you can have for 140. They were just pulled off my bike yesterday. Since my bike is track only i figured i would just stick with track tires. You can grap them monday at the track and just pay me later. Let me know if your interested.

[allergic2death]

oh yeah you can use my stands and tools at the track so it will be cheaper for off the bike pricing

[afmotorsports]

Originally posted by actionong
One week after I got new tires, there was a nail in the rear. Being the cheap bastard that I am, I got it professionally patched at Hare Racing.

I've had 3 trackdays at a B- pace and the tires are holding up fine. Tires are Pirelli Diablo's, nothing fancy. So far no slippage etc. or questionable behaviour from the tires, so I'm keeping them for a bit more.

I also use full synthetic car motor oil because it's a dollar cheaper per quart than m/c oil.

If my motorcycle tire falls apart or the engine blows up, you guys will hear about it. and know to avoid it in future.

Is this supposed to be a joke??:confused Please say "yes".

[DirtyD]

I don't really see a problem with a well patched tire. I've run plenty of patched car tires with the kids in the back seat, so have most of you. And my motorcycle tires get hot going down the freeway at speed, don't tell me that the track gets tires that much hotter (hell, this time of year I have trouble getting heat into the tires). And I've seen a guy riding the canyons on a tire with 10 pounds of air in it. The bike was moving all around. The rider thought it was pretty funny. My point? If that patch lets go and you start losing air, you'll know it. I'd just keep a closer eye on it, and take it a little easier on the warm-up lap.

Now the oil thing is a different story. Car oil isn't designed for wet clutches and transmissions, especially sequential motorcycle trannys. The Honda semi-syn. oil is 4 bucks a quart and it's designed for wet cluthes and gearboxes. I think that's a better choice than high priced synthetic car oil.

[afmotorsports]

Originally posted by DirtyD
I don't really see a problem with a well patched tire. I've run plenty of patched car tires with the kids in the back seat, so have most of you. And my motorcycle tires get hot going down the freeway at speed, don't tell me that the track gets tires that much hotter (hell, this time of year I have trouble getting heat into the tires).

Cars have FOUR tires - one fails and you still have a good chance of coming to a safe stop. Motorcycles have TWO tires - you're generally SCREWED if one of the two fails. If you're on the track, the failure is likely to happen in a high-speed section like the front straight at Thunderhill and then you're really screwed!

If I ever got taken out by a rider and later found out the cause was a tire failure due to a patch, I would hunt down the stupid mofo and beat him senseless with my Pit Bull stand! :mad On the track you have a responsibility for your safety as well as those around you - they have to trust you're not putting them in harms way just to save a few bucks.

btw, the operating temp range for motorcycle racing tires can go all the way up to 300 degrees and on a hot summer day at T-hill you can get pretty close to that limit. We have seen days when the track surface temp exceeded 150 degrees. I don't have much of a problem with riders patching their "commuter tires" for the street, but the track is a totally different game.

[elaineo]

Originally posted by DirtyD
And I've seen a guy riding the canyons on a tire with 10 pounds of air in it. The bike was moving all around. The rider thought it was pretty funny. My point? If that patch lets go and you start losing air, you'll know it. I'd just keep a closer eye on it, and take it a little easier on the warm-up lap.

save that for the street :p

Originally posted by DirtyD
Now the oil thing is a different story. Car oil isn't designed for wet clutches and transmissions, especially sequential motorcycle trannys. The Honda semi-syn. oil is 4 bucks a quart and it's designed for wet cluthes and gearboxes. I think that's a better choice than high priced synthetic car oil.

No. Oil is oil as long as the correct viscosity is used. There's no special design that makes certain oils better for motorcycles. As long as the "energy-conserving" car oils aren't used (they contain additives cause the clutch to slip), any fully synthetic oil is good. Fully synthetic oils retain their viscosity better than dyno stuff anyway.

I actually use cheap synth car oil in my bike :shhh but i have to change the oil every 75 miles and replace the clutch every 600 miles so nothing is in there long enough to cause problems... i hope! :)

[rumblephish]

Originally posted by elaineo

No. Oil is oil as long as the correct viscosity is used. There's no special design that makes certain oils better for motorcycles. As long as the "energy-conserving" car oils aren't used (they contain additives cause the clutch to slip), any fully synthetic oil is good. Fully synthetic oils retain their viscosity better than dyno stuff anyway.

You're both right and wrong here. Car oils and Motorcycle oils are different in that car oils use much more detergent in them. You're right about the cheaper oils though. They use much more detergent than the high performance oils. This is why they cause the clutch to slip. And you're right, generally any high performance fully synthetic car oil should be just fine in any bike. I used Castrol GTX and Mobil 1 (gold cap) for years in my bikes with no problem. Currently I use Castrol ACT/EVO and I really like it. It's a semi-synth, bike specific oil that's inexpensive and provides excellent performance.

I actually use cheap synth car oil in my bike :shhh but i have to change the oil every 75 miles and replace the clutch every 600 miles so nothing is in there long enough to cause problems... i hope! :)

Just curious, but why must you change your oil and pull your clutch so often?

[elaineo]

Originally posted by rumblephish

Just curious, but why must you change your oil and pull your clutch so often?


GP bikes don't have oil filters so the oil has to be flushed out at the end of every day...
the engines are constantly running at high rpm so the clutch plates wear out quickly and have to be replaced (along with half the other parts on the bike). haha.

[Kensaku]

Don't listen to a word she says.

[Hooli]

Originally posted by DirtyD
I don't really see a problem with a well patched tire. I've run plenty of patched car tires with the kids in the back seat, so have most of you. And my motorcycle tires get hot going down the freeway at speed, don't tell me that the track gets tires that much hotter (hell, this time of year I have trouble getting heat into the tires). And I've seen a guy riding the canyons on a tire with 10 pounds of air in it. The bike was moving all around. The rider thought it was pretty funny. My point? If that patch lets go and you start losing air, you'll know it. I'd just keep a closer eye on it, and take it a little easier on the warm-up lap.

:wtf

You have GOT to be joking, right?

Now the oil thing is a different story. Car oil isn't designed for wet clutches and transmissions, especially sequential motorcycle trannys. The Honda semi-syn. oil is 4 bucks a quart and it's designed for wet cluthes and gearboxes. I think that's a better choice than high priced synthetic car oil.

:hand I've used car oil on and off over the 20 years I've been riding bikes and have not had a single issue.

And to the OP, if you hadn't had so many posts I would say you're trolling. Don't be so cheap that you risk not only your life but the lives of others on the track. Be prepared when tech black-lists your bike now that we all know what to look for.

[actionong]

alright alright, I'm putting on new tires already. giving in to peer pressure is the right thing to do.

i'm just saying, I did it at the trackday, the tires held up well. plug didn't fly out.

i am upgrading to 208GPAs

[Dar25]

There is a big difference between car plug for commute and bike plug for the track. :laughing

I've got a ton of 120/180 sets (new and takeoffs) that i could be convinced to part with. ;)

Come by and check em out, Danny, if you still need some rubber.

[uraniaclio]

Yeah. Danny was dangerous today. The fooker kept on passing me blowing stinking Chitalian exhaust in my face all day. And he's looking good on his Dunlops.