BMW K bikes (Bricks)

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zaubertuba

zaubertuba
Silver member
Silver member
Only just now pulled off the System Cases on my new K'RS and found this:

Aftermarket Exhaust + System Cases = Epic Fail! Img_2012

Aftermarket Exhaust + System Cases = Epic Fail! Img_2011

Shocked





...and here's the culprit:

Aftermarket Exhaust + System Cases = Epic Fail! Img_2010

Evil or Very Mad


What to do? I was fine with the Supertrapp Exhaust 'til I found this. Do I:

1.) Repair/reinforce the system case damage and fabricate some kind of heat shield on the case itself?

2.) Try to come up with a heatshield for the Supertrapp?

3.) Sell off the Supertrapp and purchase a stock muffler (hopefully with a working heatshield)?

Other ideas?



Last edited by zaubertuba on Tue Aug 28, 2012 4:34 am; edited 1 time in total (Reason for editing : Google Drive was being dorky.)


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1985 K100RS
    

ReneZ

ReneZ
Life time member
Life time member
Can't see the pictures.


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Greetings from Florida! Having a 'new' K  :cyclops:    Surprised-o: 

Rene


BMW K100 - 1985 (0030029) Aftermarket Exhaust + System Cases = Epic Fail! Rain
BMW K1200GT - 2003 (ZK01223)
    

zaubertuba

zaubertuba
Silver member
Silver member
@ReneZ wrote:Can't see the pictures.

Oops--sorry I didn't set the permissions right-- Embarassed --how's it now?


__________________________________________________
1985 K100RS
    

RT

RT
Life time member
Life time member
Another epic fail Zaubertuba I am afraid.


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2011 R1200RT
    

scotty.ie

scotty.ie
active member
active member
@ReneZ wrote:Can't see the pictures.

Oh thank god. I thought that I had gone blind Very Happy Very Happy


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1992 K1. Red & Yellow. (Garage Queen) Aftermarket Exhaust + System Cases = Epic Fail! 2854237993

Daily driver BMW R 1150 Adventure SE. Laughing
    

zaubertuba

zaubertuba
Silver member
Silver member
@RT wrote:Another epic fail Zaubertuba I am afraid.

OK, OK...so Google Drive's a "no-go," then. Embarassed

Edited w/the standard image-host. Hopefully t'will be a little clearer. Wink


__________________________________________________
1985 K100RS
    

ReneZ

ReneZ
Life time member
Life time member
I CAN SEE.......... Very Happy

If you put some of that self-adhesive heat shield material with alu foil there? It looks very localised.


__________________________________________________
Greetings from Florida! Having a 'new' K  :cyclops:    Surprised-o: 

Rene


BMW K100 - 1985 (0030029) Aftermarket Exhaust + System Cases = Epic Fail! Rain
BMW K1200GT - 2003 (ZK01223)
    

zaubertuba

zaubertuba
Silver member
Silver member
@ReneZ wrote:I CAN SEE.......... Very Happy

If you put some of that self-adhesive heat shield material with alu foil there? It looks very localised.

It is indeed pretty localized--and that may be a very simple, elegant solution. Cool

What to repair the hole with, in the meantime I wonder? The hole is going to be a bit bigger because of the deformation. Should I lay in a piece of fiberglass mat or just find some plastic (and what kind of plastic)?


__________________________________________________
1985 K100RS
    

ReneZ

ReneZ
Life time member
Life time member
I would cement a layer of plastic in and cut the worst off from the outside before you put the isolation over it.


__________________________________________________
Greetings from Florida! Having a 'new' K  :cyclops:    Surprised-o: 

Rene


BMW K100 - 1985 (0030029) Aftermarket Exhaust + System Cases = Epic Fail! Rain
BMW K1200GT - 2003 (ZK01223)
    

japuentes

japuentes
Life time member
Life time member
Hi there, I had a similar problem with mine, but with the original exhaust, the reason was and improper mounting, the exhaust was to close to lugage. Once the vertical distance between the exhaust and the lugage was corrected the problem dissapeared.
Guess you can do both, separate and isolate the lugage.
Hope this helps
Best regards

JAP


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Aftermarket Exhaust + System Cases = Epic Fail! 2854237993 1988 K100RS SE/ABS
    

sidecar paul

sidecar paul
Life time member
Life time member
I think I would cut out the damaged plastic and screw an aluminium plate over the hole and seal it with mastic or silicon. Maybe then use another aluminium sheet spaced say 10mm as a heat shield on the bottom of the case.

The 'Supertrap' looks good, it would be a shame to change it for the stock heavy item.

Paul.


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'84 K100RS (0014643) (owned since '85), 86 K100RS (0018891) with Martello sidecar (built as an outfit in '88),
'51 Vincent (since '67),'72 Montesa Cota (from new), '87 Honda RS125R NF4 (bought 2015) 
....No CARS never ever!
    

12Back to top Go down   Aftermarket Exhaust + System Cases = Epic Fail! Empty Taming Mount St. Helens on Thu Sep 06, 2012 2:36 pm

zaubertuba

zaubertuba
Silver member
Silver member
As an aside, we lived in Spokane May 18, 1980, when St. Helens Blew--it really was an awesome display of nature's power and fury. Shocked

O.K. I happened to have some fiberglass and resin laying around, so I got a tube of hardener and a heat shield from the local Napa parts store.


My own private Mount St. Helens:

Aftermarket Exhaust + System Cases = Epic Fail! Volcan10



A Dremel tool works wonders:

Aftermarket Exhaust + System Cases = Epic Fail! Hole10



The patch:

Aftermarket Exhaust + System Cases = Epic Fail! Patch10

Aftermarket Exhaust + System Cases = Epic Fail! Outsid10

Yes the bottom was pretty distorted, but I didn't want to cut too much off for fear of compromising the structural integrity of the case.



The heatshield has a fiberglass backing. It's rated to 2000 degrees radiant heat.

Aftermarket Exhaust + System Cases = Epic Fail! Shield10



The heatshield installed. Won't actually see it when it's on the bike. At least not without trying Wink :

Aftermarket Exhaust + System Cases = Epic Fail! Heatsh10


When I checked the interior of the case after getting the bike up to temperature the patch was cool to the touch. Very Happy


__________________________________________________
1985 K100RS
    

sidecar paul

sidecar paul
Life time member
Life time member
Neat repair, zaubertuba, and you can keep the Supertrap. Aftermarket Exhaust + System Cases = Epic Fail! 112350

Paul.


__________________________________________________
'84 K100RS (0014643) (owned since '85), 86 K100RS (0018891) with Martello sidecar (built as an outfit in '88),
'51 Vincent (since '67),'72 Montesa Cota (from new), '87 Honda RS125R NF4 (bought 2015) 
....No CARS never ever!
    

Crazy Frog

Crazy Frog
admin
admin
Years ago I installed a 3 in one racing exhaust on my suzuki GT750 (Yes it was very noisy)
At the time I also had a set of aluminum saddle bags.
One day I left for a week end and rode 800km on the highway. Being young and crazy, I didn't ride under 160km/h. When I arrived, all the plastic bags around my clothes were melted.

My point is that using aluminum for a heat shield will conduct heat unless you leave a good gap between the bag and the shield.

CF



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Aftermarket Exhaust + System Cases = Epic Fail! Frog15Aftermarket Exhaust + System Cases = Epic Fail! Logo2101986 k75, 1985 K100rt, 1985 K100rt/EML GT2 sidecar, 1999 K1200lt/Hannigan Astro Sport sidecar.
    

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