Author Topic: Potential Source of fire in the Garage  (Read 3615 times)

Pawel66

  • Full Member
  • Platinum
  • ******
  • Poland, Mazowieckie, Konstancin-Jeziorna
  • Posts: 5493
Potential Source of fire in the Garage
« on: May 05, 2018, 14:23:45 »
A friend of mine was telling me a story once about a fan in ventilation duct that started a fire. He was in the garage at that time, working on his 300SC.

Today I noticed my fan in the ventilation duct stopped working. I took it down from the ceiling and undid the casing to look inside. I touched the engine and I burnt myself...

Just one more thing to watch out for...
Pawel

280SL 1970 automatic 180G Silver
W128 220SE
W121 190SL
G-class

Cees Klumper

  • Full Member
  • Platinum
  • ******
  • USA, CA, Fallbrook
  • Posts: 5719
    • http://SL113.org
Re: Potential Source of fire in the Garage
« Reply #1 on: May 06, 2018, 03:27:23 »
Years ago someone in the UK MB club had his garage burn to the ground with his Mercs in it, due to a battery he was charging at the time igniting. Scary!
Cees Klumper
1969 Mercedes 280 SL automatic
1968 Ford Mustang 302 V8
1961 Alfa Romeo Giulietta Sprint Coupe 1600
1962 FIAT 1500S OSCA convertible
1972 Lancia Fulvia Coupe 1.3
1983 Porsche 944 2.5
1990 Ford Bronco II

mdsalemi

  • Pagoda SL Board
  • Platinum
  • ******
  • USA, NC, Davidson
  • Posts: 7056
Re: Potential Source of fire in the Garage
« Reply #2 on: May 07, 2018, 18:44:44 »
...due to a battery he was charging at the time...

Which is precisely why in 17 years of storage in the off season, I've NEVER charged my battery with a tender. Sometimes I disconnected the ground. I did that this past winter, while in the museum--their own good rules. I'll only use a charger outdoors--better safe than sorry.
Michael Salemi
Davidson, North Carolina (Charlotte Area) USA
1969 280SL (USA-Spec)
Signal Red 568G w/Black Leather (Restored)
2023 Ford Maverick Lariat Hybrid "Area 51"
2023 Ford Escape Hybrid
2024 Ford Mustang Mach Ex PEV

TheEngineer

  • Associate Member
  • Gold
  • *****
  • USA, West Seattle, WA
  • Posts: 775
  • '69 280SL,Signal Red,
Re: Potential Source of fire in the Garage
« Reply #3 on: May 08, 2018, 13:13:18 »
I was actually present when a 12 volt battery blew-up. Sounded like a shotgun. Horrible mess: acid all over. I was about 30 feet away in the back yard. Battery was on a charger.
'69 280SL,Signal Red, 09 cam, License BB-59U
'67 230SL, 113042-10-017463 (sld)
'50 Jaguar Roadster XK120, #670.318 (sld)
tired engineer, West-Seattle,WA

66andBlue

  • Full Member
  • Platinum
  • ******
  • USA, CA, Solana Beach
  • Posts: 4735
Re: Potential Source of fire in the Garage
« Reply #4 on: May 11, 2018, 16:40:36 »
While visiting friends in N.C. I heard about another car/garage fire. It was caused by a USB charger plugged into the cigar lighter port (always powered on) in an old VW Bug. Don't know the exact details but from now on I'll remove mine when the car is parked in the garage.
Alfred
1964 230SL manual 4-speed 568H signal red
1966 230SL automatic 334G light blue (sold)
1968 280SL automatic (now 904G midnight blue)

thelews

  • Associate Member
  • Platinum
  • ******
  • USA, WI, Mequon
  • Posts: 1954
Re: Potential Source of fire in the Garage
« Reply #5 on: May 11, 2018, 18:03:55 »
As I understand it, the risk of explosion with a battery is greatest when rapid (full) charging a dead battery, not keeping a charged, healthy battery at full charge with a maintainer.  I've used maintainers (battery tender junior) on all of my cars' fully charged batteries while in winter storage for years and never had the slightest issue.

There are many things that could start a garage fire with the cars and the garage environment.  I'd say the best policy is a combination of common sense prevention and a fire/smoke detector/alarm.
Enjoy some pictures at this link:
http://www.flickr.com/photos/8292359@N06/sets/72157603240571101/show/

John - Wisconsin
1967 Early 250 SL Red/Caviar, Manual #1543
1961 190 SL 23K miles
1964 Porsche 356
1970 Porsche 911E
1991 BMW 318is
1966 Jaguar XKE
1971 Alfa Romeo GTV 1750

jaymanek

  • Guest
Re: Potential Source of fire in the Garage
« Reply #6 on: May 28, 2018, 15:27:02 »
The numerous potential sources of fire scare me to death.

The other day I was working under the dash of my W100 grosser. I moved a stereo amplifier slightly and i scared myself silly as sparks flew and a small fire broke out.

After my heartbeat levelled, I did some investigation and found some complete muppet had wired in a device directly to the battery.. Still not sure what it was but there was a tiny exposed wire, looked like a capacitor of some kind which blew up when i shorted it with the amplifier housing.
Upon further investigation i found there should have been an inline fuse, but someone had decided to use some thick copper wire as a fuse instead of the real thing. GRRRRR

Made me think about how we never really know what pratt could have been working on a used car in the past, without any regard for safety.

Similar story when I building my W124 500TE. The wiring I removed from the donor car was next to lethal. The only reason it hadnt already caught fire was that it hadnt been disturbed. The main live wire runs through the body of the car, which then feeds down onto the starter and alternator. No fuse for the main battery cable.
This "lower harness" degrades over time and the wires had zero insulation left on them once they were moved.. It all just crumbled. A disaster waiting to happen. 

I have always had fire alarms in my garages, fire extinguishers all handy and I hardly leave anything switched on apart from battery conditioners..

Now I feel that the most likely things to self combust are our own cars!

scoot

  • Full Member
  • Platinum
  • ******
  • USA, CA, Altadena
  • Posts: 2355
Re: Potential Source of fire in the Garage
« Reply #7 on: May 28, 2018, 16:54:39 »
My nextdoor neighbor had a garage fire last week.  The one-day-old battery powered skateboard was on the charger for the first time.  They managed to contain it but it does make me think about all of the accidents waiting to happen.  I never thought anything of leaving my battery charger on the car inside the garage.  Now I will at least think about it...
Scott Allen
'67 250 SL (early)
Altadena, California

ja17

  • Full Member
  • Platinum
  • ******
  • USA, OH, Blacklick
  • Posts: 7414
Re: Potential Source of fire in the Garage
« Reply #8 on: May 30, 2018, 14:50:10 »
Rapid charging or discharging of a battery will release explosive hydrogen gas. When hooking jumper cables, make the last connection is to a good solid metal ground on the engine. In this way the spark from the connection is away from the battery and explosive hydrogen. I have seen more than one battery blow up over the years.
Joe Alexander
Blacklick, Ohio
1969 Dark Olive 280SL
2002 ML55 AMG (tow vehicle)
2002 SLK32 AMG (350 hp)
1982 300TD Wagon turbo 4spd.
1963 404 Mercedes Unimog (Swedish Army)
1989 flu419 Mercedes Unimog (US Army)
1998 E430
1974 450SLC Rally
1965 220SE Finback