Go Back   EcoModder Forum > EcoModding > Off-Topic Tech
Register Now
 Register Now
 

Reply  Post New Thread
 
Submit Tools LinkBack Thread Tools
Old 07-07-2009, 12:01 PM   #21 (permalink)
Harebrained Idea Skeptic
 
Join Date: Jun 2008
Location: Alpharetta, GA
Posts: 211

The White Car - '84 Mercedes-Benz 300td
90 day: 28.84 mpg (US)

The Blue Car - '86 BMW 535i
Last 3: 23.86 mpg (US)
Thanks: 18
Thanked 13 Times in 9 Posts
Quote:
Originally Posted by MetroMPG View Post
Do you have any information that a film of WD-40 won't "dissipate from the rotor with the first applications of the brake"?
Do you have any information that a film of Crisco won't "dissipate from the rotor with the first applications of the brake"? If not, that must mean it's perfectly safe to use too!

__________________

  Reply With Quote
Alt Today
Popular topics

Other popular topics in this forum...

   
Old 07-07-2009, 12:03 PM   #22 (permalink)
Master EcoModder
 
Ryland's Avatar
 
Join Date: Jan 2008
Location: Western Wisconsin
Posts: 3,904

honda cb125 - '74 Honda CB 125 S1
90 day: 79.71 mpg (US)

green wedge - '81 Commuter Vehicles Inc. Commuti-Car

Blue VX - '93 Honda Civic VX
Thanks: 867
Thanked 433 Times in 353 Posts
I would get those rotors machined instead of buying new unless they do get to thin, the minimum thickness of them that is stamped in the side takes in to account the heat dissipation and so on and in my opinion it's better to use up a part that is of good quality then to replace it with a new Chinese made part, turning rotors around here costs $15 each, new ones around here are $28 each (for my civic), I'll stick with my old rotors that are rusty enough to make yours look like they belong on a show room floor.
  Reply With Quote
Old 07-07-2009, 12:56 PM   #23 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 21,710

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 53.56 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 61.98 mpg (US)

Fancy Metro - '14 Mitsubishi Mirage top spec
90 day: 58.72 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 66.29 mpg (US)
Thanks: 3,442
Thanked 6,264 Times in 3,238 Posts
Shawn D: your response implied you have some information that the author lacks. I was only looking for it. Thanks for elevating the tone of the discussion.
__________________
Latest mods: 3-cylinder Mitsubishi Mirage. EcoMods now in progress...
Ecodriving test:
Manual vs. automatic transmission MPG showdown



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
Old 07-07-2009, 01:01 PM   #24 (permalink)
Harebrained Idea Skeptic
 
Join Date: Jun 2008
Location: Alpharetta, GA
Posts: 211

The White Car - '84 Mercedes-Benz 300td
90 day: 28.84 mpg (US)

The Blue Car - '86 BMW 535i
Last 3: 23.86 mpg (US)
Thanks: 18
Thanked 13 Times in 9 Posts
Quote:
Originally Posted by MetroMPG View Post
Shawn D: your response implied you have some information that the author lacks. I was only looking for it. Thanks for elevating the tone of the discussion.
Contaminated brake pads are UNSAFE. What is hard to understand about that?
__________________

  Reply With Quote
Old 07-07-2009, 01:05 PM   #25 (permalink)
Master EcoModder
 
wagonman76's Avatar
 
Join Date: Jun 2008
Location: Northwest Lower Michigan
Posts: 1,006

Red Car - '89 Chevrolet Celebrity CL 4 door
Team Chevy
90 day: 36.47 mpg (US)

Winter Wagon - '89 Pontiac 6000 LE Wagon
90 day: 28.26 mpg (US)
Thanks: 8
Thanked 17 Times in 16 Posts
I much prefer disc brakes. I have had enough drum brake problems that I converted all my a-bodies to rear disc using parts from the 84-88 6000 STE. I also converted both my trailers to custom disc setups I designed. Drum brakes trap water, salt, mud, everything and all the little springs and parts corrode, break, refuse to self adjust, etc.

My Celebrity sits all winter, my 6000 sits most of the summer, and I don't have disc problems like that. Even the 6000 snowplow wagon doesn't, and the brakes on that only get used when I plow my driveway in the winter. It sits 99.5% of the time. However all my pads are semi-metallic. It might be worth looking into if you don't already use them. My trailers have organic pads, but like you said eariler, they do brake much harder when they get used. Still, I have never seen corrosion like that even on those rotors.

When I do replace the rotors, I always just buy new. Around here it is $25 a piece to have them turned, new ones are less than that, plus my vehicle isn't out of commision while waiting for them to do it.
__________________

Winter daily driver, parked most days right now


Summer daily driver
  Reply With Quote
Old 07-07-2009, 11:04 PM   #26 (permalink)
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 21,710

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 53.56 mpg (US)

Winter beater Metro - '00 Chevrolet Metro
90 day: 61.98 mpg (US)

Fancy Metro - '14 Mitsubishi Mirage top spec
90 day: 58.72 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 66.29 mpg (US)
Thanks: 3,442
Thanked 6,264 Times in 3,238 Posts
So in the absense of actual information about the effect of a light film of WD-40 on the brake rotors - aside from a dramatic warning from Shawn D, a newspaper article suggeting it's OK, the same tip on the WD-40 web site, and numerous references to people using it when putting cars up for storage - I tried it.

Here's my experience, on a car with clean/smooth rotors, with only the outboard surface of each front rotor sprayed:

- No perceptible change in braking behaviour, including the first stop (on an empty road), from moderate speeds (70 km / 45 mph) using moderate pressure (not close to approaching lock up).

- The pedal felt neither grabby nor spongy. It did not feel like I was trying to stop on ice.

- The second time I braked, I deliberately tried to see if I could achieve lock up, again braking from 70 km/h / 45 mph. No problem achieving lock up. (Dry, clean asphalt.)

- The film did not "dissipate from the rotor with the first applications of the brake" - at least not from the speeds and the braking pressure I was using. It took a total of five moderate/hard stops in a row before the film was gone. (At that point the rotor was too hot to touch). Maybe if you verged on lockup from high speed, going downhill, to a full stop, it might work in one try.

Is it possible that controlled testing could reveal increased stopping distance, before the film has been heated off? Of course it could. Is it a dramatic difference? I suspect not. (Now feel free to debate the relativity of safety.)

Is it possible results would be different if both sides of the rotor were sprayed? Of course it is. I didn't try both sides.

After trying this, would I personally do this to my rotors if I knew I was going to leave my car parked outside for an extended time? I'd consider it. It's still a pain in the butt though, owing to the smooth wheel covers and accessing the inboard surfaces.

Would I advise anyone to do this? Of course not. It's clearly unsafe.
__________________
Latest mods: 3-cylinder Mitsubishi Mirage. EcoMods now in progress...
Ecodriving test:
Manual vs. automatic transmission MPG showdown



EcoModder
has launched a forum for the efficient new Mitsubishi Mirage
www.MetroMPG.com - fuel efficiency info for Geo Metro owners
www.ForkenSwift.com - electric car conversion on a beer budget
  Reply With Quote
Old 07-08-2009, 01:15 AM   #27 (permalink)
Master EcoModder
 
metroschultz's Avatar
 
Join Date: Dec 2007
Location: Norfolk, Va. USA
Posts: 869

CPT SLO - '93 GEO Metro plainjane
90 day: 53.91 mpg (US)

SilverHairBeauty - '01 Toyota Avalon XL
90 day: 24.06 mpg (US)
Thanks: 14
Thanked 33 Times in 28 Posts
Send a message via AIM to metroschultz
It is unsafe. I want a bumper sticker for my Metro that says;
"Safety is for Sissies"
But you are a big boy now, make your own decisions. If you are comfortable with it, I am not going to tell you not to do it. (that's the Gubmints job)
I will however, relate a story of when I was younger and just started my career as an auto tech.

Summer,
1978,
I was working as the Mechanic Trainee for an Esso (yes that is the correct spelling) station in Richmond VA.
A "Full Service" service station.
We had a regular customer who fancied himself a practical joker.
We also had a new boy working the pumps, kid just over 16 years old.
Customer comes in (Quite Swiftly)with is relatively new Corvette.
Tells the kid'
"Fill 'er up with premium, check the fluids and...........
My brakes were squeaking earlier, give 'em a shot of WD40, would Ya?"
(Do you see where this is going yet?)
So the kid does just that, I don't know how much he used, definitely used too much.
Customer finishes his purchase, get in the car and takes off like a bat out of he!!. Hits the brakes at the edge of the road and..................
....................NOTHING................
he crosses four lanes of traffic,
cars whizzing by,
every one else brakes squealing,
hits the parking lot of the store across the street,
skids sideways into the retaining island in the lot.
No real damage to the car, flat spots on the tires,
but boy is he pi$$ed.
The kid got fired, I laughed my A$$ off, the customer never came back.

Just a little note on what not to do.

__________________


When you are courting a nice girl an hour seems like a second. When you sit on a red-hot cinder a second seems like an hour. That's relativity.
Albert Einstein
  Reply With Quote
Old 07-08-2009, 01:19 AM   #28 (permalink)
(:
 
Frank Lee's Avatar
 
Join Date: Jan 2008
Location: up north
Posts: 12,738

Blue - '93 Ford Tempo
Last 3: 27.29 mpg (US)

F150 - '94 Ford F150 XLT 4x4
90 day: 18.5 mpg (US)

Sport Coupe - '92 Ford Tempo GL
Last 3: 69.62 mpg (US)

ShWing! - '82 honda gold wing Interstate
90 day: 33.65 mpg (US)

Moon Unit - '98 Mercury Sable LX Wagon
90 day: 21.24 mpg (US)
Thanks: 1,572
Thanked 3,508 Times in 2,195 Posts
Quote:
Originally Posted by Shawn D. View Post
WD-40 on brakes? Do the bad ideas never stop around here?


Just how would that keep you in position on a hill without using energy? Answer: it wouldn't.
Oh- you've done this?
  Reply With Quote
Old 07-08-2009, 09:03 AM   #29 (permalink)
Harebrained Idea Skeptic
 
Join Date: Jun 2008
Location: Alpharetta, GA
Posts: 211

The White Car - '84 Mercedes-Benz 300td
90 day: 28.84 mpg (US)

The Blue Car - '86 BMW 535i
Last 3: 23.86 mpg (US)
Thanks: 18
Thanked 13 Times in 9 Posts
Quote:
Originally Posted by MetroMPG View Post
So in the absense of actual information about the effect of a light film of WD-40 on the brake rotors - aside from a dramatic warning from Shawn D, a newspaper article suggeting it's OK, the same tip on the WD-40 web site, and numerous references to people using it when putting cars up for storage - I tried it.
Quote:
Originally Posted by WD-40
Protects cast iron brake rotors when storing vehicle.
They're opening themselves up for serious liability with that one. Sure, it'll protect them (I never said otherwise), but doing so and not removing it and/or contaminating the pads is dangerous.

Quote:
Originally Posted by Frank Lee View Post
Oh- you've done this?
No, I'm not so blithe as to intentionally contaminate my brakes. One does not have to personally fail or see exactly matching evidence to know an idea is bad.
__________________


Last edited by Shawn D.; 07-08-2009 at 09:13 AM..
  Reply With Quote
Old 07-08-2009, 09:17 AM   #30 (permalink)
(:
 
Frank Lee's Avatar
 
Join Date: Jan 2008
Location: up north
Posts: 12,738

Blue - '93 Ford Tempo
Last 3: 27.29 mpg (US)

F150 - '94 Ford F150 XLT 4x4
90 day: 18.5 mpg (US)

Sport Coupe - '92 Ford Tempo GL
Last 3: 69.62 mpg (US)

ShWing! - '82 honda gold wing Interstate
90 day: 33.65 mpg (US)

Moon Unit - '98 Mercury Sable LX Wagon
90 day: 21.24 mpg (US)
Thanks: 1,572
Thanked 3,508 Times in 2,195 Posts
I think the bad idea is acting like you know for sure when you don't.

  Reply With Quote
Reply  Post New Thread


Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
New personal record: 632 miles on 1 tank. 48 MPG in my Auomatic 05 Corolla blackjackel Success Stories 6 11-30-2009 01:02 PM



Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Content Relevant URLs by vBSEO 3.5.2
All content copyright EcoModder.com