| Author |
Message |
P. Thomas (Ferrari_fanatic)
Member
Username: Ferrari_fanatic
Post Number: 498
Registered: 4-2003
| | Posted on Tuesday, August 05, 2003 - 5:40 pm: | |
Lateral run out on rotors is pretty easy to check on a brake lathe. The last three marques I own/have owned, the rotors were thin by the Manufacture's design and could not be turned. Rotors have a minimum thickness requirment because when they are too thin there is not enough material to disipate adequatly.
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Taek-Ho Kwon (Stickanddice)
Intermediate Member
Username: Stickanddice
Post Number: 1850
Registered: 11-2002
| | Posted on Tuesday, August 05, 2003 - 5:32 pm: | |
Inside of the rotor or the side facing the axle?
Either way. It has been a pretty gradual shudder and now it has become prominent to the point that I took it to the dealer. He asked me if I was riding the brakes. I told him no. He asked me of anything unusual I've been doing with the car in the past couple of weeks. I concurred that I drove a lot on the hills of San Francisco helping my brother find an apartment there. He then attributed the brake shudder to using the e-brake after braking hard (steep hills). He said it was "common" in cars driven in SF.
Maybe I should get a second opinion? Do worn out brake pads make the car shudder under braking? Or is it a rotor thing for sure? I'd hate to replace rotors when all I need is a couple of pads.
Cheers |
DES (Sickspeed)
Senior Member
Username: Sickspeed
Post Number: 5535
Registered: 8-2002
| | Posted on Tuesday, August 05, 2003 - 5:31 pm: | |
quote:Best way to leave Ferrari parked?
With the valet...? LMAO, sorry, couldn't help it... |
P. Thomas (Ferrari_fanatic)
Member
Username: Ferrari_fanatic
Post Number: 496
Registered: 4-2003
| | Posted on Tuesday, August 05, 2003 - 5:25 pm: | |
Taek, in the old drum brakes it actually activates the main shoes.
In the Corvette, and on my 355 it definitely has an auxilary shoe and drum INSIDE of the rotor (hub of the rotor really).
So, the thought process is that outward pressure on the hub of a hot rotor will cause lateral runout???? I don't know about that one.
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Taek-Ho Kwon (Stickanddice)
Intermediate Member
Username: Stickanddice
Post Number: 1849
Registered: 11-2002
| | Posted on Tuesday, August 05, 2003 - 5:19 pm: | |
P.Thomas,
That's what I thought too. Maybe they are different in different cars?
I know for sure my rotors are warped, anyone in the Bay Area can feel free to try them out. I was told that using the e-brake was probably the reason why.
Cheers |
P. Thomas (Ferrari_fanatic)
Member
Username: Ferrari_fanatic
Post Number: 495
Registered: 4-2003
| | Posted on Tuesday, August 05, 2003 - 5:13 pm: | |
The "pads" on an emergency brake are not pads at all. They are shoes. Shoes inside of a drum (like the old drum brakes. Since appling the hand brake does not activate the brake pads or touch the rotor surface, how does this cause run out in your rotors??? |
Taek-Ho Kwon (Stickanddice)
Intermediate Member
Username: Stickanddice
Post Number: 1848
Registered: 11-2002
| | Posted on Tuesday, August 05, 2003 - 4:54 pm: | |
>>If the brakes have a chance of being hot, do not use the parking brake! you will warp the rotors.<<
OK, OK,
I'll be the first moron to come forward and admit to doing this. Yes, it isn't paranoia. It warped my rotors. The Corvette now gets a nice shudder every time I step on the brakes. I'm looking into replacements as we speak.
Cheers |
Mitch Alsup (Mitch_alsup)
Member
Username: Mitch_alsup
Post Number: 935
Registered: 4-2002
| | Posted on Tuesday, August 05, 2003 - 3:41 pm: | |
If the brakes have a chance of being hot, do not use the parking brake! you will warp the rotors. |
James Glickenhaus (Napolis)
Intermediate Member
Username: Napolis
Post Number: 2272
Registered: 10-2002
| | Posted on Tuesday, August 05, 2003 - 1:01 pm: | |
Peter
Unless you want to do a hand brake turn... |
James Glickenhaus (Napolis)
Intermediate Member
Username: Napolis
Post Number: 2271
Registered: 10-2002
| | Posted on Tuesday, August 05, 2003 - 1:00 pm: | |
Paul
1 or R depending on direction of nose to grade. Same as manual. In a garage where it's flat I always leave it in the gear which if I screw up will move me away from wall. With F1 doesn't matter as it shifts into N to start and foot must be on brake. |
peter james moran (Pjm)
Junior Member
Username: Pjm
Post Number: 62
Registered: 3-2002
| | Posted on Tuesday, August 05, 2003 - 12:59 pm: | |
Dave,
You don't want to put the emergency brake on when you have just come in from doing track events (or after repeated heavy braking as well). Because you can generate enough heat in the rotors that if you put the E-brake on it can warp the rotors do to cooling rates and in extreme conditions you could weld the pads in place on the rotor. 308s with their small rotors this can happen, but it is good practice to avoid the E-brake in all performance car during track usage.
Peter |
Jim E (Jimpo1)
Intermediate Member
Username: Jimpo1
Post Number: 2210
Registered: 7-2001
| | Posted on Tuesday, August 05, 2003 - 12:47 pm: | |
I've never understood people that leave any manual transmission car parked in N. You don't leave an auto transmission in N. |
Paul Bianco (Paulie_b)
Member
Username: Paulie_b
Post Number: 573
Registered: 1-2003
| | Posted on Tuesday, August 05, 2003 - 12:41 pm: | |
James, with an F1 transmission, put it in first gear? Correct? And also the e-brake on. |
James Glickenhaus (Napolis)
Intermediate Member
Username: Napolis
Post Number: 2269
Registered: 10-2002
| | Posted on Tuesday, August 05, 2003 - 12:03 pm: | |
An engine can not start with with ign. off. Some engines can start backwards and it's not pretty. |
Vince (Manatee)
Member
Username: Manatee
Post Number: 281
Registered: 6-2002
| | Posted on Tuesday, August 05, 2003 - 11:53 am: | |
James, but if the brakes fail, wouldn't the car roll and engine start as if it were push-started? |
James Glickenhaus (Napolis)
Intermediate Member
Username: Napolis
Post Number: 2268
Registered: 10-2002
| | Posted on Tuesday, August 05, 2003 - 11:47 am: | |
Because if it should move, lets say tapped from behind and try to move down hill the motor will not be turned in the wrong direction. |
Dave Wapinski (Davewapinski)
Member
Username: Davewapinski
Post Number: 575
Registered: 8-2001
| | Posted on Tuesday, August 05, 2003 - 11:39 am: | |
James,
It seems like the gears should be the other way around.
It seems like it should be R if nose is pointed downhill and 1st if nose is pointed uphill. So I will understand, why should it be the other way?
Martin, why not use the emergency brake even if the car has been used in the mountains or on the track? Generally an emergency brake is a seperate mechanical linkage to the rear wheels.
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James Glickenhaus (Napolis)
Intermediate Member
Username: Napolis
Post Number: 2265
Registered: 10-2002
| | Posted on Tuesday, August 05, 2003 - 11:20 am: | |
Exactly the same. F1 is same box with an automatic clutch. |
ELI (Titanium360)
Member
Username: Titanium360
Post Number: 548
Registered: 4-2002
| | Posted on Tuesday, August 05, 2003 - 11:14 am: | |
how about the F1 transmission? |
James Glickenhaus (Napolis)
Intermediate Member
Username: Napolis
Post Number: 2262
Registered: 10-2002
| | Posted on Tuesday, August 05, 2003 - 10:36 am: | |
Put on parking brake. When it's on and holding place car in gear. 1 if nose is down hill. R if nose is uphill. After washing or when parking in rain remember P brake can rust to caliper so leave room to "Pop" it free by moving sharply forward or in reverse.
On trailer always leave in N with P brake off. |
Martin - Cavallino Motors (Miami348ts)
Senior Member
Username: Miami348ts
Post Number: 5566
Registered: 5-2001
| | Posted on Tuesday, August 05, 2003 - 10:30 am: | |
best advise for parking your car:
lock it!
(as for the brake, if the brakes have been used excessively like track or mountain roads) do not use the emergency brake. put it in gear or just let it sit flat.
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Dave Wapinski (Davewapinski)
Member
Username: Davewapinski
Post Number: 574
Registered: 8-2001
| | Posted on Tuesday, August 05, 2003 - 10:28 am: | |
Having driven extensively in the mountains, I normally leave a stick car in first gear and the emergency brake on.
I have gotten conflicting reports on the best way to park a Ferrari. For short term parking, is there any potential risks in leaving it in first gear and the emergency brake on?
Any better way? |