Saturday, 21 March 2026

The (flying) brick - a perfectly adequate motorcycle (part 3)

There is a distinct difference between running and R-U-N-N-I-NG. (And also all the variants of the same general topic in between.) As a matter of fact, the BMW was running, but for example it wasn't idleing and it wasn't overly happy to rev up as well. 


So step one was to sync the carbs - this was the starting point, where I had only done it by ear, which I have to say... not too bad. 


 If I held the throttle open far enough, it would run perfectly at around 1100-1200rpm. 


 Which then made me think, even though all the manuals (and the forum) warn against altering any of the mechanical settings, the way the throttle stop is adjusted looked dramatically different to what it is set to on other K75s. So after a bit of tweaking, I simply set it, so it would hold a nice and steady idle at around 1000 to 1100 rpm, when warm and about 850-900rpm, when cold. 

Strictly speaking none of this should ever be necessary on a well maintained bike 

The throttle position switch was completely maladjusted before, as it was almost perfect once I had set the throttle stop so it would idle, indicating that I might be on the right track.

The ignition baseplate is generally meant to be left alone. Clocking it, so it  was set up in the base setting made the engine run much nicer almost instantly. 


 The other challenge was that the overall performance was rather... moderate. As the throttle is geard, it can be set in various positions. Not all of them allowing full throttle.

The result of all those efforts was quite staggering compared to the clip at the top of this post. 


 Bit of tidying up here and there and passing the inspection was actually a breeze.




 As the first ride after getting the bike registered already turned into a wet (and thus cold) one...

I attempted to fit a pair of R100GS handguards. Attempted, because aside from various claims that they are a bolt-on thing, they needed quite a bit of modification to actually do.



The BMW definitely didn't improve its looks, but as I can attest after the first (slightly) longer rideout, it keeps my hands warm and dry. 


 Lastly, given it's somewhat practical nature, yet it not sparking overboarding enthusiasm, I found a name for it: Geraet, which means device or as it is meant in this case, appliance.

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