BMW K bikes (Bricks)

You are not connected. Please login or register

View previous topic View next topic Go down  Message [Page 1 of 1]


1Back to top Go down    fuel and coolant temp gauge backlighting on Mon Jul 09, 2018 4:09 am

audibob

avatar
Gold member
Gold member
Hi all,

I swapped my instrument cluster lights to green LED,s and am very happy with it, but my fuel and coolant gauges 

still have the originals .

Can anyone give  me the specs  for any led bulbs which will fit.

Thanks 

Bob


__________________________________________________
Yamaha 90
Honda CD 175
Honda CB 360 
Triumph T 140V Bonneville
Triumph T150 Trident
Honda CB750 F1
Cz 175
Yamaha XS 750
R 100/7
R 80
K100 LT
K100 LT current bike
    

charlie99

avatar
VIP
VIP
not sure they have made leds in the correct format bulb equivalent bob

to be honest I found a couple of reasonably high powered leds and just silicone them into the breather holes , either side of the main incandescent globe holder ...of corse  the leds were not rated for 12 volts ...so had to install a current limit resistor in line ith the posative of the power feed .....  i had series up the leds  and found that about 330 ohms resistor kept the current through the leds under 20 milliamps



worthy of a mention is that the high powered leds do have a rather narrow light beam rather than the spread of an incandescent globe , additionally there isn't much distance between the back of the instruments (where the leds may be fitted ) and the backing plate - scale face of the instruments

so if you can find a wide angle 3mm  led suitable ….in the 10 mm types you an find the inverted focus type ...like this



….. which gives  a pretty reasonable spread of beam of light  ...rather than the dome type (concentrated focus ) types



you might be looking for at least 5000 milli candela 3 mm leds to do the job , with either flat or  inverted type lens out the front ...no that I have seen any such a beast as yet ...but I haven't been looking in the last year or so for useful version ...but will be chasing up some in the coming year for the project im currently working on


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

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
    

3Back to top Go down    fuel and coolant temp gauge backlighting on Mon Jul 09, 2018 5:09 am

audibob

avatar
Gold member
Gold member


__________________________________________________
Yamaha 90
Honda CD 175
Honda CB 360 
Triumph T 140V Bonneville
Triumph T150 Trident
Honda CB750 F1
Cz 175
Yamaha XS 750
R 100/7
R 80
K100 LT
K100 LT current bike
    

charlie99

avatar
VIP
VIP
no mate ....no where near bright enough 

have a look at the specifications ...the greens are only 20 mcd   (milli candelas )  ok for an indicator on piece of equipment at home but no particular brightness at all really


you would need 2000 Plus to be able to see it at night even ...more preferably towards 5000 +  mcd  (I think 1,000 mcd is equal to 1 lumen )

have a look at the specifications I found on this Chinese product I found online ,, sold in us ...and I guess in other places

but you will see the specification show the mcd rating for luminosity on the data sheet    you should aim for something like this to start with

https://lighthouseleds.com/3mm-led-green-ultra-bright-15-000-mcd.html

but this flat top led is better for the spread of light

https://lighthouseleds.com/3mm-flat-top-wide-angle-12v-pre-wired-led-green-ultra-bright.html



get a feel for the numbers and what may be good for you in this situation

I hope that helps somewhat  

send me links to what you have found if in doubt

just trying to help out


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

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
    

Point-Seven-five

avatar
Life time member
Life time member
Is this what you're looking for?  I use them in my gauges.  Not the brightest bulb in the cluster, but neither are the original incandescent bulbs.

https://www.superbrightleds.com/moreinfo/ba9s-ba7s/ba7s-led-bulb-1-led-ba7s-retrofit-car/10/#/attributes/15

I get a better spread of the light beam by lightly scuffing the plastic lens of the LED with 400 grit wet or dry paper.


__________________________________________________
Present:
1994 K75RT
1994 K75S
1992 K100RS

Past:
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

6Back to top Go down    fuel and coolant temp gauge backlighting on Mon Jul 09, 2018 12:11 pm

audibob

avatar
Gold member
Gold member


__________________________________________________
Yamaha 90
Honda CD 175
Honda CB 360 
Triumph T 140V Bonneville
Triumph T150 Trident
Honda CB750 F1
Cz 175
Yamaha XS 750
R 100/7
R 80
K100 LT
K100 LT current bike
    

charlie99

avatar
VIP
VIP
yep that looks fine bob

good find as  well point 75


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

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
    

8Back to top Go down    fuel and coolant temp gauge backlighting on Mon Jul 09, 2018 12:50 pm

audibob

avatar
Gold member
Gold member
Thats great,

 Thanks  Charlie, Point-Seven-Five 

I will order a couple

Bob


__________________________________________________
Yamaha 90
Honda CD 175
Honda CB 360 
Triumph T 140V Bonneville
Triumph T150 Trident
Honda CB750 F1
Cz 175
Yamaha XS 750
R 100/7
R 80
K100 LT
K100 LT current bike
    

View previous topic View next topic Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum