BMW K bikes (Bricks)


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1Back to top Go down   Hot Ride Empty Hot Ride Fri Feb 24, 2017 12:39 pm

DaleRT

DaleRT
Silver member
Silver member
Just recently went out to visit friends in Dubbo, good opportunity for a good ride [about 600km round trip] 
   Weather report was for mid 40's C. - went anyway. It did get to 43' C in the shade.
   The trip meter stopped working, so when home pulled the instrument panel apart and noticed this - 

Hot Ride Img_2011

Hot Ride Img_2012

Warped a bit, the speedo face did not warp as much, the mounting screws are more evenly spaced.
   The only down side was i lost the glass out of the r/h mirrow pod after hitting a good size pot hole.
      I think, with that heat trucks were just squeezing the tar out of any repaired holes.

Is there any point trying to repair this face - if so how ?   I did have a spare that i have fitted, working good.

Hot Ride Img_2013

The heat did not effect the fuel system, it has only the insulation under the tank and the fuel tank was quite warm to the touch.
   Had a great day out.   sunny  Dale

    

2Back to top Go down   Hot Ride Empty Re: Hot Ride Fri Feb 24, 2017 1:27 pm

BobT

BobT
Life time member
Life time member
We get the odd summers day in the mid 40's but never had anything melt like that on the K or the Ducatis.
Could there be something else causing some heat in there? A small electrical short perhaps.

    

3Back to top Go down   Hot Ride Empty Re: Hot Ride Fri Feb 24, 2017 3:10 pm

Point-Seven-five

Point-Seven-five
Life time member
Life time member
My RT speedo was starting to buckle when I got it.  Fortunately, is wasn't bad enough to interfere with the needle.

The black face under the "glass" acts as a solar collector and can get as hot as 25C or higher above ambient on a sunny day.  The reflective white interior of the instrument cluster helps hold the heat in too.

I carry a cover, one of those lightweight silver nylon ones, and use it whenever I am going to park for more than an hour, mostly to protect the red paint from fading in the sun, but it also protects the instruments.  If I don't use the cover, I will put my gloves or the microfiber wiper that I carry for my visor over the instruments. 

Keep them covered when the bike is parked!


__________________________________________________
Present: 1991 K100RS "Moby Brick Too"
 
Past:
1994 K75RT "Ilsa, She Wolf of the SS"
1988 K100RS SE "Special Ed"
1994 K75S "Cheetos"
1992 K100RS "Moby Brick" R.I.P.
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

4Back to top Go down   Hot Ride Empty Re: Hot Ride Fri Feb 24, 2017 3:37 pm

Point-Seven-five

Point-Seven-five
Life time member
Life time member
The problem with these parts is built-in stress from the molding process that made the parts.  This stress relieves itself over time when the parts get hot by distorting the part.  By annealing the part with gentle heat and cooling you should be able to get most of the distortion out of it.

As far as flattening the instrument face you can try this.

Put a cotton towel down on a flat surface that won't be damaged by heat.

Put the instrument dial on the towel face down and fold the towel over it.  Put an iron on the towel over the part and set it on the lowest setting for for about 10 minutes.  Shut it off and let it cool to room temperature before removing.  This may or may not flatten the face.  If not, repeat at the next highest setting.  If your iron is very light it may take some extra weight on top of it to help it flatten the face.   

Be careful and patient and you should be able to get it pretty flat.  The key is to heat and cool slowly, this is what will relieve the internal stresses.  You want to get it hot, but not hot enough to melt the plastic.


__________________________________________________
Present: 1991 K100RS "Moby Brick Too"
 
Past:
1994 K75RT "Ilsa, She Wolf of the SS"
1988 K100RS SE "Special Ed"
1994 K75S "Cheetos"
1992 K100RS "Moby Brick" R.I.P.
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

5Back to top Go down   Hot Ride Empty Re: Hot Ride Fri Feb 24, 2017 3:51 pm

Crazy Frog

Crazy Frog
admin
admin
I was thinking basically about the same process....
Put the plate on something flat conducting heat (maybe a ceramic tile) in a warm oven with a big flat weight on the top of it.
Let it "bake" until flat.
We should start a cooking show with all the "baking" problems related to high heat on the K100. Hot Ride 44271


__________________________________________________
Hot Ride Frog15Hot Ride Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

6Back to top Go down   Hot Ride Empty Re: Hot Ride Fri Feb 24, 2017 4:03 pm

Point-Seven-five

Point-Seven-five
Life time member
Life time member
The key here is SLOW cooling.  The problem in the first place is due to cooling the part too rapidly and unevenly in the mold when it was first made.


__________________________________________________
Present: 1991 K100RS "Moby Brick Too"
 
Past:
1994 K75RT "Ilsa, She Wolf of the SS"
1988 K100RS SE "Special Ed"
1994 K75S "Cheetos"
1992 K100RS "Moby Brick" R.I.P.
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

7Back to top Go down   Hot Ride Empty Re: Hot Ride Mon Feb 27, 2017 1:35 am

Dai

Dai
Life time member
Life time member
If that fails PM me and I'll send you one, FOC.


__________________________________________________
1983 K100 naked upgraded to K100LT spec after spending time as an RS and an RT
1987 K100RT
Others...
1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500
    

8Back to top Go down   Hot Ride Empty Re: Hot Ride Mon Feb 27, 2017 8:25 am

charlie99

charlie99
VIP
VIP
what an offer dai ....good stuff mate


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

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%O
'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
1987 k100rs ########   "Red"  - (red sports rs TWB style )
1989 K100rt #009637   "Black Betty"  (naked rt ala Nigel , now sporting an rs main fairing )
    

9Back to top Go down   Hot Ride Empty Re: Hot Ride Mon Feb 27, 2017 9:53 am

Stan

Stan
Life time member
Life time member
Dale, you should have pm me as I live in Dubbo...... and it has been bloody hot of late. Yes I have had the same thing happen to my 83 basic... tacho... the bike would rev at 2000rpm, even when it was switched off. The needle was stuck at 2000. Welcome to my world.


__________________________________________________
1983 K100 basic vin 0003960 colour red  GONE
1987 K100RT vin 0094685 colour, orange peel, sorry, pearl..GONE
F800R black
    

10Back to top Go down   Hot Ride Empty Re: Hot Ride Mon Feb 27, 2017 11:29 am

DaleRT

DaleRT
Silver member
Silver member
Thanks for the reply's 
   Looks like i'm doing some home duties - Cooking / Ironing.
   Dai, great gesture, i'll practice my skills first [when Kathy is out  Hot Ride 652573]
   Ainsjac, if i'm ever out that way again, i just might look you up - cooler months only.
      Now, where is that apron ...

    

11Back to top Go down   Hot Ride Empty Re: Hot Ride Wed Mar 01, 2017 6:56 am

K75cster

K75cster
Life time member
Life time member
Aprons like this maybe Hot Ride Bmw_ap10


__________________________________________________
Keith - 1987 K75c with r100rt replica fairing and half of a 1984 K100rt 1992 K1100LT a blue one

The Clever are adept at extricating themselves from situations that the wise would have avoided from the outset - QUOTE from david Hillel in Out of the Earth.
    

12Back to top Go down   Hot Ride Empty Re: Hot Ride Sun Mar 05, 2017 10:51 am

DaleRT

DaleRT
Silver member
Silver member
Well, cooking over and its not over done.  It is FLAT.
   It took several attempts, mainly to get the appropriate temperature.
      I did try the Iron, it was not getting hot enough or not heavy enough to make a good contact.
      Using an Infrared Thermometer i had 2 cast iron pans heated to 90c, then removed from the heat.
   Folded a cotton rag over the Tacho face and placed it between the bases of the 2 pans.
   Only left it there for several seconds, did this a few times till it looked like it was sitting flat.
      Each time i looked at it i unwrapped it to make sure the rag was not sticking to the face, 
   or starting to leave an imprint on the face.
   Anyway, with it sitting flat i then put it between 2 wooden chopping blocks [they were handy].
   I had a 7lb weight [door stop] also handy, so used this to keep it flat.
   Left it there for hours to cool.
      The face is flat, it fits and i am away.   Thanks all,  Cheers  Dale.

    

13Back to top Go down   Hot Ride Empty Re: Hot Ride Sun Mar 05, 2017 5:52 pm

Point-Seven-five

Point-Seven-five
Life time member
Life time member
Nicely done!  cheers 

Perhaps the moderators could move your post to the reference library to help those in the future who will encounter the warped dial face syndrome.


__________________________________________________
Present: 1991 K100RS "Moby Brick Too"
 
Past:
1994 K75RT "Ilsa, She Wolf of the SS"
1988 K100RS SE "Special Ed"
1994 K75S "Cheetos"
1992 K100RS "Moby Brick" R.I.P.
1982 Honda FT500
1979 Honda XR185
1977 Honda XL125
1974 Honda XL125
1972 OSSA Pioneer 250
1968 Kawasaki 175
    

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