Quote from: ScottieDucati on June 05, 2009, 03:22:44 PM
Despite the temptation to do otherwise, I'll keep the personal-attacks out of this (hey, maybe I'm turning over a new leaf!)...

<snip>

Why would you feel threatened enough to retaliate to something that doesn't exist?

Personal attacks?

BTW...

I'm not responding on your site.

I wanted to sign up for a day or two but the dates don't fit into my schedule.  I find the NESR site hilarious.  I'd say that 99% of the people on there are ball busters ...  in a good way.      Humor is not lacking there.

You did a DTE package correct?  How'd you like the DCIII's? 

Quote from: The Architect on June 06, 2009, 06:20:19 PM
I was in the intermediate group.  I had a good time and will probably do another day with them.  It is about track time.  The groups are small.  I think the group was about 20 people.  You just have to bring your lunch.

Quote from: ScottieDucati on June 05, 2009, 04:16:22 PM
If anyone has any questions regarding our trackdays, philosophy, or anything else whatsoever, please feel free to visit our website: http://bostonmoto.com or email me personally at scott@bostonmoto.com (general inquiries: trackdays@bostonmoto.com) 

Scottie -

I would recommend clicking the "Notify" button at the bottom of the page so you can be alerted in real time of any impending doom and gloom / questions / personal attacks / nonsensical banter / etc. 

Cheers,
Adam

Quote from: ScottieDucati on June 08, 2009, 07:26:13 AM
You did a DTE package correct?  How'd you like the DCIII's? 

They were great!  But that's coming from a guy that was on old michelin pilot roads.  I would use them again especially when you throw in an affordable trackday.

I have to work on the front tire pressure.  Under very hard breaking (like just before turn one) the front was a little squirmy but at no time did it make me feel uncomfortable. 

Tire pressures should be 34f, 36 rear.  Where were you at?  A good idea is to always double-check your gauge as well... we consistently see riders with tire pressure gauges reading +/- 3 psi from our calibrated gauge. 

Quote from: ScottieDucati on June 08, 2009, 08:41:27 AM
Tire pressures should be 36f, 34 rear.  Where were you at?  A good idea is to always double-check your gauge as well... we consistently see riders with tire pressure gauges reading +/- 3 psi from our calibrated gauge. 

33 front and rear.

There you go then... 3 psi low right off the bat.... try 34 front next time and definitely let me know how it feels...

Quote from: The Architect on June 08, 2009, 06:18:50 PM
33 front and rear.

Quote from: ScottieDucati on June 08, 2009, 08:41:27 AM
Tire pressures should be 36f, 34 rear.  Where were you at?  A good idea is to always double-check your gauge as well... we consistently see riders with tire pressure gauges reading +/- 3 psi from our calibrated gauge. 

"tire pressures" or "your tire pressures"??

Each bike is different and thus should be running different pressures. Are you basing your suggestion on his specific bike and tires? At my last track day Bruce Myers suggested 32f and 30r.

But who knows, maybe your right. 

Well, he's on Pirelli Diablo Corsa IIIs so, by "tire pressures" I was referring to the DCIII tire.

While your concept is somewhat correct, you do not adjust tire pressures for a specific tire depending on the bike, tire, or rider.  You measure tire pressures HOT, which removes variables such as different bikes, riders, track grip-levels, ambient and track temperatures, etc.  Pressures vary solely on tire type. 

For a Diablo Corsa III, pressures should be 34f, 36r, regardless of application... and should be taken HOT, which I did not point out (apologies).

If you have say, a fast rider on a heavy bike, he will see his gain in pressure from track use more significantly than a slower-rider on a lighter bike.  Therefore, if you check your pressures hot at the END of a session, you know where your tires are at while you're on track and remove all variables mentioned above.  The only difference between the two riders / applications will be where their pressures start cold.

Pirelli has some recommended cold pressures for various tires, but they're only that... a recommendation or guide.  To achieve optimum performance, and longevity out of your tires (regardless of brand) you should always be taking hot pressures and go by manufacturer recommended pressures for your specific tire carcass and compound.

Example: DCIII = 34f, 36r.  Diablo Supercorsa DOT Race Tire = 32-35 front and 28-30 rear.

Hot pressures for Pirelli's DOT race tires are given as ranges, as Pirellis feature a softer carcass than other tire brands, and offer the ability to "tune" the tire based on pressures.  We find some riders perfer a softer feeling front tire and run 32 psi (hot), while a rider coming off a Dunlop for example may prefer to run 35 psi front to give them the feel of a stiffer carcass tire.

On the rear, the range of pressures you can run allows to tune for feel, but also provides for some control over tire life.  We have some top-tier racers running hot pressures in the rear as low as 25 or 26 psi, which provides optimum grip over a sprint race.  A track-day rider looking to get the most out of his tire, should be running the rear closer to 30 psi.

Again, those numbers above are for the Diablo Supercosa DOT tire, in a 120 series front and 180 series rear application ONLY.  Slicks, Dragons, and different size tires (110 front, 190 rears) will have subtle changes.

And lastly, of course you should always check with your local tire professional for your specific application.  I can only speak for Pirelli tires in this regard, and for the DCIII, the recommendation is very specific, largely because the dual compound rear tire's wear characteristics is very sensitive to pressures....

But then again.... what would I know....

Quote from: Monstermash on June 09, 2009, 08:54:05 AM
"tire pressures" or "your tire pressures"??

Each bike is different and thus should be running different pressures. Are you basing your suggestion on his specific bike and tires? At my last track day Bruce Myers suggested 32f and 30r.

But who knows, maybe your right. 

*edit - my dislexia got the better of me. 

Diablo Corsa III Recommended Pressures:

34 psi FRONT
36 psi REAR

I modified my prior postings to avoid confusion.   

Quote from: Monstermash on June 09, 2009, 08:54:05 AM
"tire pressures" or "your tire pressures"??

Each bike is different and thus should be running different pressures. Are you basing your suggestion on his specific bike and tires? At my last track day Bruce Myers suggested 32f and 30r.

But who knows, maybe your right. 

Were Bruce's recommendations for Michelins?

My understanding is that different tire brands differ more than from bike to bike within the same brand of tire

I run 29/24 in Power Race PRC/PRE

Quote from: ScottieDucati on June 09, 2009, 09:30:41 AM
You measure tire pressures HOT, which removes variables such as different bikes, riders, track grip-levels, ambient and track temperatures, etc. 

33 was cold pressure.  Next trackday I'll run the tires a little differently.

Or maybe I'll run a different bike!

Quote from: ducpainter on June 09, 2009, 10:32:03 AM
Were Bruce's recommendations for Michelins?

My understanding is that different tire brands differ more than from bike to bike within the same brand of tire

I run 29/24 in Power Race PRC/PRE

No I was running the Bridgestones that came on my Monster. I can't remember what the model numbers were, sorry.

Guys- An outstanding day.

Well worth it - Heaps of track time.

The entire crew very helpfull and the day was well run. There are more than enough staff to give you tips and pointers etc.

I'll be there for the July dates

Vin