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Old 04-14-2009, 02:35 PM   #21
SCRC John
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Quote:
Originally Posted by Brian f. View Post
On the surface on the warmers you want between 160 deg F - 170 deg F
Off the track tire surface should be between 190 deg F - 220 deg F
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Old 04-14-2009, 02:39 PM   #22
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Quote:
Originally Posted by SCRC John View Post
On the surface on the warmers you want between 160 deg F - 170 deg F
Off the track tire surface should be between 190 deg F - 220 deg F
Thanks John, awesome info there. Will monitor that this weekend at the track and see what i "learn." Expect more question Monday, lol
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Old 04-14-2009, 02:39 PM   #23
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Quote:
Originally Posted by po-po 5.0 View Post
So in your conclusion, even though my pace was slow, I could have solved the cold tearing issue by dropping pressure in the tire?
The tire pressure will help, but really it comes down to taking time for the tire to build heat in it before you start hammering the tire. Now that you have a 600, it should not be as big of a problem. You still need to set & maintain your pressures throughout the day, and work on being smooth on the throttle. It will be better on your tires and you will end up going faster in the long run.
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Old 04-14-2009, 02:50 PM   #24
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Quote:
Originally Posted by SCRC John View Post
The tire pressure will help, but really it comes down to taking time for the tire to build heat in it before you start hammering the tire. Now that you have a 600, it should not be as big of a problem. You still need to set & maintain your pressures throughout the day, and work on being smooth on the throttle. It will be better on your tires and you will end up going faster in the long run.
My pace is higher on my 600 and I'm back to running regular out pilot powers. I originally put Bt002s on the 1k in order to "get over" two lowsides, but I wasn't anywhere close to actually needing the grip.
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Old 04-14-2009, 05:19 PM   #25
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Quote:
Originally Posted by po-po 5.0 View Post
My pace is higher on my 600 and I'm back to running regular out pilot powers. I originally put Bt002s on the 1k in order to "get over" two lowsides, but I wasn't anywhere close to actually needing the grip.
That explains a lot, then.

Re-read what you've posted.
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Old 04-14-2009, 05:39 PM   #26
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Quote:
Originally Posted by po-po 5.0 View Post
My pace is higher on my 600 and I'm back to running regular out pilot powers. I originally put Bt002s on the 1k in order to "get over" two lowsides, but I wasn't anywhere close to actually needing the grip.
I'm assuming you lowsided on the PP. If the BT002's helped you get over the lowsides, it begs the question.....Why not continue to run the BT002 and go even faster?
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Old 04-15-2009, 07:50 AM   #27
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Quote:
Originally Posted by SCRC John View Post
I'm assuming you lowsided on the PP. If the BT002's helped you get over the lowsides, it begs the question.....Why not continue to run the BT002 and go even faster?

Lowsided on dunlops D208s (that were several years old, and not scrubbed in.....apparently after a certain age you just CAN'T scrub a tire) and on Bridgestone BT013s. I had no confidence in the front on any bike I was riding so I got the BT002s to convince myself that I had more grip than I knew what to do with. It worked. Currently, however, my pace doesn't really require BT002s. I don't feel the PPs moving around me at all. I'll definetily go back to BT002s/3s when needed, but I'm not there yet.
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Old 04-15-2009, 10:55 AM   #28
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Quote:
Originally Posted by po-po 5.0 View Post
Lowsided on dunlops D208s (that were several years old, and not scrubbed in.....apparently after a certain age you just CAN'T scrub a tire) and on Bridgestone BT013s. I had no confidence in the front on any bike I was riding so I got the BT002s to convince myself that I had more grip than I knew what to do with. It worked. Currently, however, my pace doesn't really require BT002s. I don't feel the PPs moving around me at all. I'll definetily go back to BT002s/3s when needed, but I'm not there yet.
i raced on some brand new rain tires this past weekend at TWS (Texas World Speedway) that were manufactured in january of 2005
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Old 04-15-2009, 01:43 PM   #29
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Quote:
Originally Posted by houseofpain View Post
i raced on some brand new rain tires this past weekend at TWS (Texas World Speedway) that were manufactured in january of 2005

I have no other explanation as to how I lowsided........in my neighborhood.......on a clean street.........at like maybe 40mph....at the end of a 30 minute ride.
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Old 04-15-2009, 02:38 PM   #30
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Damned Good Thread. Thanks for the info John (and others).

John, I have a question. Do those temps you gave apply to Pirrelli Slicks?
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Old 04-15-2009, 03:14 PM   #31
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Originally Posted by 996Pilot View Post
Damned Good Thread. Thanks for the info John (and others).

John, I have a question. Do those temps you gave apply to Pirrelli Slicks?
In general yes, but certain tracks & conditions can greatly influence what is optimum. Also tire compound will influence what is optimum, but for general purposes those are good numbers to go by.
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Old 04-15-2009, 04:48 PM   #32
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Originally Posted by SCRC John View Post
On the surface on the warmers you want between 160 deg F - 170 deg F
Off the track tire surface should be between 190 deg F - 220 deg F
30 degrees is a huge range, John. What is optimal for the BT003?

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Old 04-15-2009, 04:52 PM   #33
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30 degrees is a huge range, John. What is optimal for the BT003?

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For you......

I'm taking a educated guess, your going to be on the upper end of the range. Nothing over 210 on the rear, and 185-190 on the front.
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Old 04-15-2009, 05:08 PM   #34
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John you gonna be at MSRH this weekend?
I need a new rear (and so does the bike).
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Old 04-15-2009, 05:22 PM   #35
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John you gonna be at MSRH this weekend?
I need a new rear (and so does the bike).
Thats the plan
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Old 04-15-2009, 06:38 PM   #36
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Thats the plan
Great. I need to make sure my pressure gauge is accurate. I used to be gentle with it, but lately it has been dropped and thrown in the tool box. Good to know you can check it

Do you trust the digital gauges?
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Old 04-15-2009, 07:01 PM   #37
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Great. I need to make sure my pressure gauge is accurate. I used to be gentle with it, but lately it has been dropped and thrown in the tool box. Good to know you can check it

Do you trust the digital gauges?
My experience has been that the digital gauges are accurate, but fragile. I prefer a silicone liquid filled analog gauge.
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Old 04-16-2009, 02:02 AM   #38
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I was running softs at TWS (Texas World Speedway) at the correct pressure and the warmers were set on high (for over an hour before going out) and I have tearing.

I'm wondering if it could just be the rough track tearing up the soft tires, or if the rear warmer wasn't getting hot enough (the pits were FULL that day).

Any suggestions (besides running off a genny to ensure ample power)?

Last edited by Pre-K; 04-16-2009 at 02:04 AM.
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Old 04-16-2009, 09:44 AM   #39
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Quote:
Originally Posted by Pre-K View Post
I was running softs at TWS (Texas World Speedway) at the correct pressure and the warmers were set on high (for over an hour before going out) and I have tearing.

I'm wondering if it could just be the rough track tearing up the soft tires, or if the rear warmer wasn't getting hot enough (the pits were FULL that day).

Any suggestions (besides running off a genny to ensure ample power)?
You should have come over and said something. I could have probed the tire with my temp gauge and seen what was going on. Were they 003's? or the soft Dunlops?
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Old 04-16-2009, 09:51 AM   #40
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Originally Posted by Pre-K View Post
I was running softs at TWS (Texas World Speedway) at the correct pressure and the warmers were set on high (for over an hour before going out) and I have tearing.

I'm wondering if it could just be the rough track tearing up the soft tires, or if the rear warmer wasn't getting hot enough (the pits were FULL that day).

Any suggestions (besides running off a genny to ensure ample power)?
The "correct" pressure is a bit of a misnomer. John provides a starting point that is good for many riders, but you have to make adjustments based on your personal riding style and the bike. I'll have my pyrometer out this weekend to get a better handle on tire pressures. I had more movement from the front at TWS (Texas World Speedway) that I'm used to or comfortable with last time out. I'm expecting the tire temps to give me a better idea of what's happening.
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