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1Back to top Go down   Durability of headlight bulb? Empty Durability of headlight bulb? Sun Mar 02, 2014 5:59 pm

Jhepburn

Jhepburn
Silver member
Silver member
Does anyone have any idea how long I should expect the headlight bulb to last? I've just had the low beam go, which is the second while I've owned the bike. I have put more than 50,000km on the bike, and leave the headlight on all the time, so the bulb has been used a bit.

If there's an overload it's obviously not serious, but does anyone have any data points?

    

2Back to top Go down   Durability of headlight bulb? Empty Re: Durability of headlight bulb? Sun Mar 02, 2014 6:26 pm

AL-58

AL-58
Life time member
Life time member
A friend changed the tail-light bulb on his 90/6 after 35 years.


Al


__________________________________________________
'87 K100RS/HRD sidecar (1100 motor)  sc25 
'92 K100RS-16v (Paint it Black)

'87 K100RT with Paralever backend

"When I'm too old and too foolish to handle a sidecar I'll buy a Sportsbike"

Durability of headlight bulb? K-dogs10
    

3Back to top Go down   Durability of headlight bulb? Empty Re: Durability of headlight bulb? Sun Mar 02, 2014 7:17 pm

92KK 84WW Olaf

avatar
Life time member
Life time member
Am on Ks for 4 years and not had to but have replaced one or two in the car in that time. Main thing is to watch the fitting to make sure the glass is not touched and also that the bulb socket is fully and securely fitted as in a good mechanical connection on all 3 pins. But a second in 4 years is not too bad. A Rover 75 at home will not go 3 months without losing a bulb.....I reckon a second at 50k isn't too bad.....and you probably don't know how long the other was in it before you got the K?


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 37,190 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 42,640 miles.

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

4Back to top Go down   Durability of headlight bulb? Empty Re: Durability of headlight bulb? Sun Mar 02, 2014 7:34 pm

RicK G

RicK G
admin
admin
I wouldn't think that to be excessive but if it gets more regular then may pay to have a look at the connections at the bulb as slightly lose connections will cause that type of failure. The faster than we can see flickering will cause the filament to shed material and make it more likely to fail.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

5Back to top Go down   Durability of headlight bulb? Empty Re: Durability of headlight bulb? Sun Mar 02, 2014 8:10 pm

RicK G

RicK G
admin
admin
92KK K100LT 193214 wrote:A Rover 75 at home will not go 3 months without losing a bulb.....
Gees now that brings back memories it was a Rover 75 P3 that was my first road car but it didn't take me long to hotrod it with a 283 Chev and a 9" rear end and chrome wheels etc that went with all the hotrod stuff then.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 1998 K1100 LT, 1993 K75 RT, 1996 K75RT, 1986 K75 GS, 1979 Z1300 Kawasaki
    

6Back to top Go down   Durability of headlight bulb? Empty Re: Durability of headlight bulb? Sun Mar 02, 2014 8:17 pm

duck

duck
Life time member
Life time member
My 90 K75RT got 40K out of the stock halogen bulb.


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

7Back to top Go down   Durability of headlight bulb? Empty Re: Durability of headlight bulb? Sun Mar 02, 2014 9:02 pm

92KK 84WW Olaf

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Life time member
Life time member
I wish the Rover was a P5 in particular the P5B coupe. A nice 3.5 V8......My favourite classic.

But the 75 at home is the more modern one, built from 1999 to 2005, initially under the ownership of BMW. In some places it was sold with the 4.6 V8 found in Range Rovers but this one has the BMW common rail diesel engine [shared with 320d and 520d of the same era] mated to automatic transmission.

The 75 P3 is well before my time...... but also a nice motor.


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011171 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 37,190 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 42,640 miles.

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

8Back to top Go down   Durability of headlight bulb? Empty Re: Durability of headlight bulb? Sun Mar 02, 2014 11:10 pm

klamityboy

klamityboy
Gold member
Gold member
My bulb, recently replaced, had 43000 KM on it. Probably would have lasted longer but I buggered it removing the socket to install an Eastern Beaver relay kit.


__________________________________________________
Klamityboy
1991 K75RT-P

Model Description: K 75RT
Market: Europe
Type: 0565
E-Code: K569
Engine: 3_ZYL - 0,70l (55kW)
Transmission: Manual
Body Color: Polizeiweiss
Production Date: 30.08.1990
    

9Back to top Go down   Durability of headlight bulb? Empty Re: Durability of headlight bulb? Mon Mar 03, 2014 5:43 am

Guest

avatar
Guest
If you are running the standard halogen headlight bulb then it thrives on heat, the hotter the better. If you supply it with a lower voltage then it will run cooler and the metals within the bulb will coat the quartz glass and not burn off. In the past the bulbs that have lasted the longest for me are the ones where I have played with the wires to make both filaments burn at the same time when on main beam.
It is bad practice to have the headlight on when the engine is not running as the battery could be a little low in voltage and will take a little life from the bulb.

    

10Back to top Go down   Durability of headlight bulb? Empty Re: Durability of headlight bulb? Mon Mar 03, 2014 5:46 am

charlie99

charlie99
VIP
VIP
hate to say it .....
but most suppliers have economized their manufacture processes

the filament stretches and shrinks to the heating effect ...

and over time becomes brittle ..

every time a globe turns on the shock to the element is at a premium, whilst it goes from a very low resistance to a slightly higher one and current dissipates some what  ( the strike current can be many times what the working current is ...)

the primary factor for globe failure is the purity of the gas in the envelope of the globe which directly affects the durability and shedding of the heated element of the globe and the actual fabrication elements of the filament ..

not many years ago we saw the same thing happening with (cathode ray ) tvs and monitors   once the Chinese - Korean et all became involved in tube ...globe manufacture, the death rate increased extraordinarily ...name brands that used to be considered as stalwarts of production values started seeing massive early failure rates after... erm dubious design and plating standards used .....which also brought lower cost ....

no oxygen ...no deterioration ...well as much anyhow !! and poor quality  elements used in both the filament and rare gasses production just means early failure

I too have had globes last a decade or more ...till recently , I find that even the rear running lamp needs to be replaced every 18 months or less ....there are some dodgy brands  out there

I keep seeing cars as young as 10 years(and younger )  with 4 out of 5 brake lamps failed all the time

not to mention head lamps ...crikey they go off fast these days


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%ODurability of headlight bulb? Au-log10

'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
    

11Back to top Go down   Durability of headlight bulb? Empty Re: Durability of headlight bulb? Mon Mar 03, 2014 12:39 pm

Two Wheels Better

Two Wheels Better
Moderator
Moderator
The typical standard halogen H4 or now more common H7 on BMWs used to last a coupla years at least with no worries (headlight always on models), but I've seen a notable increase in bulbs lasting only a year or less. I agree with Charlie that with the dumbing down of the manufacturing process, and often just plain poor quality, Chinese made versions, most are crap. I try to stock BMW's versions, or Osram, Phillips, etc., but you can never be sure where they come from. Also, late model CAN-Bus BMWs 'eat' headlight bulbs, which might be explained because the ZFE is constantly monitoring the voltage and this may have an effect on the filament's life. A newer R1200GS or RT will chew through them in six months' time. PIAA seem not to last either, in any type of 'bike. Having said that on my K1200S I managed two years on the low beam and never replaced the high beam, but on my RT I've swapped the low beam twice in a year and a half - daily ridden. Still, I use that brand in my bikes. Their light output is beaut. I reckon I've never replaced the H4 in my K100RS, after trying a high output 90/100W for a while which slightly melted the three way connector - that's another story (read, needs an Eastern Beaver mod). It's now a bog stock 55/60W H4 from Osram.


__________________________________________________

1970 R60/5, OZ '77 R75/7-R100, '85 K100'87 K75C, OZ '87 K100RS, '93 K11-K12 Big Block, '93 K1100RS, '95 R100-Mystic, '96 K1100RS, '98 K1200RS, '00 K1200RS, '02 K1200RS, '03 K1200GT, '04 R1150R'04 R1150RT, '05 K1200S, '06 K1200R, '07 K1200R, '09 K1300GT & 2013 R1200RT-Polizei  - Beemers owned still or sold.

~We all believe what we want to believe in - Rob Dickinson
    

12Back to top Go down   Durability of headlight bulb? Empty Re: Durability of headlight bulb? Mon Mar 03, 2014 2:06 pm

xpc316e

xpc316e
Gold member
Gold member
I too am sure that 'they don't make 'em like they used to' when it comes to headlamp bulbs.  Having said that, Osram do a longlife bulb that has given me good results in my current car.

I did own a Hyundai Trajet that absolutely destroyed bulbs on a regular basis, but only on the nearside.  I am certainly no electrical genius, and I was truly baffled by this habit.  It did not seem to matter whether I used good quality stuff, or cheap rubbish; bulb life was rarely more than three months.


__________________________________________________
VIN 0191428, 1991 K100LT, formerly owned by Lancashire Constabulary. This old warhorse is now 'out to grass' and living in retirement in Suffolk, where it will be showered with appropriate love and care.

VIN 6459609, 1992 K1100LT, another ex-Police machine, even though she now looks like she is a former fire engine.
    

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