bike fecked

[Prattapillar]

Smear the saeling ring and the FPC in Vaseline: Cheap, waterproof and doesn't glue it all together like silicone bathroom sealant does so you can fix it at the roadside easily in future if necessary.

I seem to remember that using vaseline on seals will result in the degradation of the seal over time, something to do with vaseline being petroleum based, resulting in future water ingress. I was always taught to use silicone grease on O seals or equivalent. Mind you a long time has passed since I was an apprentice and the memory ain't what it used to be!

 

[Prattapillar]

Also, just a thought but the electrics burning out as a result of over heating and water collection on top of the FPC could be related. If the FPC heat sink fins are submersed in H2O then their capacity to radiate heat to atmosphere is greatly reduced, resulting in the internal operating temperature of the device exceeding it's safe working temp and a degradation of the components over time.

 

[Pukmeister]

I seem to remember that using vaseline on seals will result in the degradation of the seal over time, something to do with vaseline being petroleum based, resulting in future water ingress. I was always taught to use silicone grease on O seals or equivalent. Mind you a long time has passed since I was an apprentice and the memory ain't what it used to be!

Depends on the grade of material used, Vaseline should be non-oxidising the same as Silicon Grease IIRC. I believe the blue sealing ring fitted to the FPC is made of a synthetic rubber material rather than a natural one so should be okay.

 

[JohnU-IOW]

Does anyone know how hot the FPC gets? Tried the obvious - screeching to a halt after a decent ride, popping off the cover and having a good grope round. FPC not even warm. I guess they must get warm / hot, else why the fins?

 

[Pukmeister]

Does anyone know how hot the FPC gets? Tried the obvious - screeching to a halt after a decent ride, popping off the cover and having a good grope round. FPC not even warm. I guess they must get warm / hot, else why the fins?

I took my failed FPC to bits, there is a small power handling capacitor in the main heatsink area, my capacitor had blown but probably due to a poor quality component used by the supplier rather than excessive heat.

Mine died after I used the killswitch, maybe a voltage spike killed it?

Mine never seems to get hot after a ride either but I suspect it might be hotter at sustained low engine revs as the fuel pump will be working less hence the FPC working more to reduce fuel flow by regulating the voltage to the fuel pump.

 

[wideparting]

she lives, thanks people for all your assistance,i would have been farting about for days without all this info.i am so made up,i am going to pay my £12 and subscribe.another satisfied customer. ps.the fpc was £67.54 from.e port. j

 

[newboy]

is that e. port as in new dealer @ cheshire oaks??

 

[original_concept]

I hear what you're saying.

Wideparting said: ...but it was sitting in a pool of water...

I wouldn't be happy with any electrical componant sitting in water so I just posted those photos so new owners could easily check.

I recommend you don't look under the seat of a F800 bike, the FPC is covered by a soft rubber item which creates a moat. Oddly enough the F800s don't have a FPC problem despite all the water that gets into that area. Oh and the FPC is mounted flat, not angled, so water cannot drain away.

Also any 'new' owners of '08/'09s have the FPC mounted at more of an angle with no cover at all.

 

[wideparting]

is that e. port as in new dealer @ cheshire oaks??

the very one