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A BMW Airhead
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web-search "amazonas motorcycle" and I think you'll find a link in which
someone mentions putting a VW engine in a Sportster, mentioning that
very extensive frame modifications were required--presumably one could
do the same with the BMWs.
There's also the possibility of a 2-cylinder half-VW of the sort that is
used on some homebuilt airplanes.
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Y'all may be thinking of the 'conversion kits' available in the late
60s, for BMW R60 and R69 models. The kit was developed and sold by a
fellow named Willis. The frame did need to be stretched to accommodate
the VW engine and transmission.
Once the lighter-framed /5 Beemers were on the market, the conversion
more or less fell out of fad, as the newer frames weren't really strong
enough for the bigger engine.
There were other custom models out there as well, including one that
mated two BMW twin engines together. It also obviously had a lengthened
frame.
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My F4i is in the shop for valve adjustment, chain/sprockets, oil change, new
plug and replace the anti-freeze with Water wetter. Getting it ready for my
first track day May 2.
What'd your service cost?
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It was a little under $200 USD. Dealer's aren't cheap. The oil
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....
The seller told me he had just had the Concours tuned up when I bought it.
There was a receipt for $400 in a box of accessories so I asked the shop
one day when I was at the dealer if that would have covered a valve
adjustment. They said yup, that price would have included a valve
adjustment. $200 doesn't sound bad in comparison.
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change was included in that and I watched the mechanic go over every
inch of the bike. I also bought a can of chain lube.
I would like to get a scott oiler or the like. And I really need a
paddock stand.
As others pointed out, the bike I saw was probably the R75/7. It most
definitely had two cylenders, not three. They stuck out of the sides
and were covered in fins.
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There was a BMW K75/7 in the shop. It really made me appreciate just
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So, who was the airhead?
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The guy that didn't clean up the model badge on the left side of that
slab of an engine.
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So you can't tell the difference between an inline and a boxer without the
model badge being clean?
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April Fools!
David Steuber is the fool, if he thinks that a K75 is an "Airhead".
pooder was here knowing that a K75 is water-cooled
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Man, are you guys slow. I beat Andrew by 5 hours, Rob by 6, and you
by 7 hours and 20 minutes.
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Not everyone lives in a bulbous heap in front if their computer monitor
ready to spring on the next post that pops up...
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how much bike technology has advanced. It was also a sharp reminder
of how simple bikes used to be. I can't see myself owning such an
antique. But I could certainly appreciate the engineering of it.
I was told it was still running strong.
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I am pretty sure that the K series are not airheads.
It's an inline triple that is water cooled, if I remember right.
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There are BMW airhead twin R75s and BMW K75 water cooled
in-line kwhiner triples. Please don't let this kind of mistake happen
again in the future.
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Sorry about that. The badge was a bit dirty and I am not a motorcycle
expert. However, I can vouch for the two air cooled pistons in a 180
degree opposed formation.
If there were four such pistons, I would swear the engine was made by
Lycoming :-p
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