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Danny Lerner
Joined: 08 May 2005
Posts: 188
Location: United States, New York,
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 Posted: Wed Oct 12, 2005 10:19 am Post subject: Tire Pressures |
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I was told by the po to run both front and back in between 11 to 13 psi... But I find that I'm pumping the pressures up a lot higher than that... The tires have no time to warm at all, and the course is pretty bumpy so I would prefer not to bottom (I already raised the front of the chassis....)
Since I've only run the kart at two events, I can't really tell the difference between raising the chassis (Also switched front compounds at the same time when I put on front brakes).
I really need more seat time - it sucks that I got my front brakes so late in the season (required on shifter in NYR)
So I'm just looking for a general idea of tire pressures...
Also, what compounds are you guys running and about how many events do/should they last?
BTW, anyone else in the nyr region??
Thanks,
Danny |
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Andrew. james
Joined: 30 Jul 2005
Posts: 245
Location: United States, Georgia, Atlanta
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| Posted: Wed Oct 12, 2005 11:35 am Post subject: |
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| On MG greens at our local parking lot which I bet is the bumpiest asphalt lot in the country. I run 10 psi and it feels good. I don't even think MG greens need to be warm, but they do get pretty hot after 1 run. |
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Larry MacLeod
Joined: 28 Sep 2005
Posts: 299
Location: United States, Michigan, Ypsilanti
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| Posted: Wed Oct 12, 2005 2:10 pm Post subject: Re: Tire Pressures |
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| Danny Lerner wrote: | | I really need more seat time - it sucks that I got my front brakes so late in the season (required on shifter in NYR) |
????
Is there an explanation for this? The F125 rules do not need amendments from local regions to be legal. Its not like it's unsafe without front brakes. Don't tons of w2w karts only come with rear brakes?
Heck, I bet Dan Cyr's kart's front brakes never work anyway!
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F125 #196
Old Birel/ hodgepodge Honda CR125
Lefty Funk
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Danny Lerner
Joined: 08 May 2005
Posts: 188
Location: United States, New York,
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| Posted: Wed Oct 12, 2005 3:32 pm Post subject: |
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I run an 80 shifter - It states clearly in the NYR rules that shifters must have front brakes... When I inquired about the requirement being only for 125s I got the response that ANY and ALL shifters need front brakes...
Danny |
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Andrew. james
Joined: 30 Jul 2005
Posts: 245
Location: United States, Georgia, Atlanta
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| Posted: Wed Oct 12, 2005 4:15 pm Post subject: |
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| Danny Lerner wrote: | I run an 80 shifter - It states clearly in the NYR rules that shifters must have front brakes... When I inquired about the requirement being only for 125s I got the response that ANY and ALL shifters need front brakes...
Danny |
They are telling you lies. You don't need front brakes on an 80cc in f125.
I don't have the rules in front of me but I'm 100% sure that only 125cc moto and icc require front brakes.
The rule states for 80cc that you need to provide WKA IKF or other rules showing 80cc does not require them. Sorry I can't quote word for word I'm at work. |
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Steve Brueck
Joined: 05 Oct 2005
Posts: 7
Location: United States, Georgia, Atlanta
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| Posted: Wed Oct 12, 2005 5:04 pm Post subject: |
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You're right Andrew!
Only Moto and ICC 125's have to have brakes that operate on all four wheels.
Anything else is dependant on the rules for that karting organization.
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Alan Sheidler
Joined: 09 Aug 2001
Posts: 471
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| Posted: Wed Oct 12, 2005 11:17 pm Post subject: |
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2005 book, page 128.
19.1.C |
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Danny Lerner
Joined: 08 May 2005
Posts: 188
Location: United States, New York,
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| Posted: Thu Oct 13, 2005 5:25 pm Post subject: |
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http://www.moutons.org/sccasolo/Rules/kart.html
"80cc and 125cc shifter karts run in the F125 class"
Under rules for F125 class
"Brakes
Must work in such a manner to brake both rear wheels equally and adequately. Must have front brakes operating on each front wheel. Single rear disk is allowed for 100cc karts.
Must have a dual braking system operating front and rear wheels. "
I do not have the rule book... Is there a link somewhere?
Danny |
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Steve Brueck
Joined: 05 Oct 2005
Posts: 7
Location: United States, Georgia, Atlanta
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Danny Lerner
Joined: 08 May 2005
Posts: 188
Location: United States, New York,
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| Posted: Fri Oct 14, 2005 5:42 am Post subject: |
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Link doesnt work... Anyone check out the link I posted?
Danny |
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Steve Brueck
Joined: 05 Oct 2005
Posts: 7
Location: United States, Georgia, Atlanta
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| Posted: Fri Oct 14, 2005 5:45 am Post subject: |
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Works for me... it's a 9.8 MB pdf so it's pretty large. Right click and do "Save as..."
you need the Adobe Acobat Reader from here http://www.adobe.com/products/acrobat/readstep2.html
_________________
'04 Pavesi/CRG Road Rebel
#140 FM F500
#74 SM '94 Camaro
Last edited by Steve Brueck on Fri Oct 14, 2005 6:20 am, edited 1 time in total |
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Andrew. james
Joined: 30 Jul 2005
Posts: 245
Location: United States, Georgia, Atlanta
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| Posted: Fri Oct 14, 2005 6:15 am Post subject: |
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| Danny Lerner wrote: | Link doesnt work... Anyone check out the link I posted?
Danny |
Danny those rules on moutons are really old.
Here is the rule specific to your question. The PDF rule book can also be found at scca.org.
19.1 C: BRAKES
1. Moto and ICC 125cc Shifter Karts: Moto and ICC shifter karts must have disc brakes that operate on all four wheels. The brakes shall be dual system, arranged in a manner to provide braking for at least two wheels in the event of failure in part of the system.
2. Other Allowed Karts: Other karts that are allowed to compete in F125 (see 19.1.D.3 below) may use a braking system that complies with the rules to which the kart is prepared (e.g., WKA, IKF, Cart Stars of Tomorrow). The competitor is responsible for providing the rules to which the kart is prepared (i.e., an 80cc shifter or 100cc clutch type is not required to have front brakes). All karts with engine configurations other than moto/ICC 125cc, that are allowed to compete in F125, must have at a minimum, a single rear disc that brakes both rear wheels equally and adequately for the power plant used. The addition of front brakes is optional; however the kart must then be run at the 385 lb. minimum weight. |
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Danny Lerner
Joined: 08 May 2005
Posts: 188
Location: United States, New York,
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| Posted: Fri Oct 14, 2005 8:19 am Post subject: |
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I love how the SCCA tech guy didnt even bother to look up the rule before confirming I needed front brakes... GRRR, well at least I have a little extra braking power for those REALLY tight tracks (there have been a few of them). Plus I got a really good deal on the brakes...
I have adobe... Most adobe files open when you clicka da link...
I right clicked and saved - worked... VERY USEFUL thank you!
Thanks for the help guys!!
Danny |
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Ryan D Thompson
Joined: 22 Aug 2005
Posts: 199
Location: United States, Georgia,
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| Posted: Mon Nov 14, 2005 2:07 pm Post subject: |
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| are you serious about the 22-23 psi range? What kind of tires as the MG website recomends 12 for the greens. |
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Michael Contour
Joined: 12 Dec 2003
Posts: 75
Location: United States, California, Del Mar
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| Posted: Mon Nov 14, 2005 4:30 pm Post subject: |
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Just so everyone is aware, there are two kinds of MG greens (XZ and KZ)
I'm not sure of all the differences between them, but the XZ's have a more square contact patch. The KZ's are rounder, more like Bridgestone YHA's.
I find that the XZ's perform well around 10 psi, while the KZ's like it up around 13 psi. |
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