Jiang 750 History:
Chang Jiang 750 is the Chinese version of the
Russian M72 which is a copy of the BMW R71.
Though the history is a bit mixed about the
origins of how China ended up making the Chang
Jiang 750 sidecar motorcycle. We do know for
a fact that its origins came from BMW and as
time progressed modifications were made to what
we know now as the Chang Jiang 750. We can basically
call them all cousins.
Chang Jiang 750 has stock originally has a 6v
22 hp engine or a 12 24hp engine, this commonly
is know as the flathead or sidevalve engine.
The flathead motorcycle was so popular back
in the earlier part of the century that even
the Harley Davidson motorcycle company made
a flat head engine, the XA, in 1942 with a flathead
twin engine, and it was also used by the U.S.
story is the Russians, which were initially
allies with Germany got the technology from
the Germans, later produce the M72 from machinery
that came from a joint venture with the Germans.
The M72 is identical to the BMW R71. Even newer
BMW engines such as R60, R75, R80, R90 and R100
fit right into the Chang Jiang 750 with some
slight modifications to the transmission.
Chinese Peoples Liberation Army (PLA) No. 6 Automotive
Works started to make and assemble sidecars in
1957 and in 1959 the NanChang Aircraft factory
was in full production with the Chang Jiang 750
sidecars. These sidecars were primarily used by
the military and communications bureau. The Chang
Jiang Factory was to produce 30,000 sidecars a
year for the military so you can imagine the amount
of sidecars that China has. An estimate is that
there are about 1.3 million Chang Jiang sidecars
in China. Most of the Chang Jiangs are in military
areas such as Beijing, Fujian, other provinces
such as ShanDong also produce similar sidecars
thus adding many more to the total amount of sidecars
of the old Chang Jiangs from the late 50s and
early 60s have Russian parts and also Russian
sidecars. These bikes are referred to as Chang
Jiang M72. These old Chang Jiang 750s all
have 6 volt engines known as Type 1 engines. You
can recognize the Type 1 engine because the oil
dipstick is located at the bottom of the engine
block. The first ones where made in 1952 with
Russian parts the second version was made in 1957.
These M72s where made till the late 60’s.
The frames of the 1960's Chang Jiangs M72 are
also welded together thus one can see the welding
around the joint area. More detailed photos of
these bikes can be seen on our 60s Chang
Jiang M72 page. This type of frame production
ended by 1960 however there are many 1960's sidecars
assembled from these frames. If you bought a late
1950 early 1960 Chang Jiang sidecar, to check
its authenticity by the details in the photos
on our 60's page..
Chang Jiang side cars are easy to identify by
a few of the following:
Tool box mount
Moveable sidecar mount arm
Type engine (oil stick at bottom of block)
Type one transmission
Tool box gas tank with square ends
Sidecar frame with arm around fender
Front mount of sidecar frame is welded and not
are several variations on old frames depending
on when it was manufactured. Over the years there
are some Chang Jiangs 750 sidecars that are made
quite noticeably different than others. One example
of this is the 1982 Chang Jiang 750 that has round
tubular frame (pic
3) and is overall smaller and has a smaller
gas tank (pic
2). Many of the frame jigs are different in
size so many of the Chang Jiang 750 sidecars parts
need to have slight modifications in order to
fit perfectly. The sidecar frame from the 60s
and early 1970s also have a different step on
the side, a bar and not a platform (pic1,
time evolved (mid 1980s) the Chang Jiang factory
has started to manufacture the 12 volt engines.
Many of the 12 volt engines are converted from
old 6v engines by adding modifications such as
starter, alternator, distributor, etc. These 12v
sidecars are known as M1M and later the M1S with
the over head valve 32 hp engines was launched.
This OHV engine shares strong similarity to the
“Slash 2” series of BMW engines. These
engines were the standard boxer twin for BMW motorcycles
the history of the Chang Jiang 750 you can now
own one of these historical machines at the incredible
local Beijing prices from Big Bill's Bikes. There is no need
to pay more for some fancy story, and there are
thousands of these sidecars all over China. They
are not hard to find and the military unloads
hundreds of them every year. Talk to us about
getting a Chang Jiang 750 stock or customized
to your style, better yet visit us and we will
give you a clear understanding of what the actualy
market situation for a Chang Jiang 750 sidecar
is one of the few cities where these bikes are
highly available and affordable. Beijing has tons
of Chang Jiang 750 sidecar parts, all sorts of
Chang Jiang 750 sidecars and also other makes
of sidecars, and tons of military (PLA NOS) inventory.
There are over 20 shops buying selling and maintaining
Chang Jiang 750 sidecar motorcycles. We encourage
you to get one as soon as you have done your research.
You will be then able to see parts of Beijing
that not many others get to see, especially up
on the weekend mountain getaways.
out our map for the locations of shops around
town and it will come in handy especially if you
are researching to buy a Chang Jiang 750 or need
repair. Many of the smaller size shops have been
in business for over a decade and the owners have
been riding Chang Jiang 750s for more than a quarter
of a century, however they do not speak english,
anyway visit them and you will find that you can
get a Chang Jiang 750 from them at decent prices.
site is to bring Chang Jiang 750 enthusiast an
opportunity to see the amazing craftsmanship that
Big Bill's Bikes puts into customizing these classic
sidecar motorcycles. Whether one wants an old
bike in stock condition 6 volt engine and no reverse
gear, a WW-II replica, one painted with multi
colored flames, or something classic with just
pinstripes, an 32hp OHV engine, or even a BMW
engine installed into a Chang Jiang 750, just
drop us a line for the real deal. Look at the
photos carefully and check out the details!
last and important note, all Chang Jiang 750 are
genuine, authentic, real, and original. Check
around and you can now own a part of motorcycle
history direct at the local Beijing prices.
by Chang Jiang 750 riders for Chang Jiang 750