"If we have a correct theory but merely prate about it, pigeonhole it and do not put it into practice, then that theory, however good, is of no significance."
"On Practice" (July 1937), Selected Works, Vol. I, p. 304.
It is not always possible, nor always advisable, to use parts originally made for the Chang Jiang. Whether it's availability, or reliability, here are a list of some parts known to fit/work on Chang Jiangs.
Part
Source/Part#
Tires
Cheng Chin (Specs. 3.75/4.00 x 19 [110/90H19] 4 ply) JC Whitney Part # AAF621832P
Avon Sidecar Triple Duty MKII
Battery 12v
Yuasa Part # YTX7L-BS (Specs. 12 Volt, 6 Amp, 85 CCA, 4.5" x 2.8125" x 5.1875), fits in the holder behind transmission.
CB18-A battery for a 12V motorcycle (M1M and M1S).
Battery 6v
Purchase whatever fits for an M1 6V. It will be the same size battery as fits a /2 BMW. J.C. Whitney is also a cheap source of batteries. Dennis Kirk is another good on-line source.
A standard 7 inch sealed beam headlight costs about $12 and is available from a local auto parts store. The bulb is number #6014 for 12V models and #6006 for 6 volt models. You can also use a 12V halogen headlight bulb, which is #6024 in 12V models.
High-beam indicator
12V indicator light from your local auto parts store. They cost about $2.
Speedometer Light
NAPA part 1813
Tail Light
#1176
Sidecar Running Light
NAPA part 17131
Turn Signals
#1176 front, #1103 rear
Front Brake Light Switch
Domi Racer, in Cincinnati, OH sells a Triumph part that will work. It costs about $12. The part number is 95602085. This switch mounts on the front brake cable. You have to cut the cable housing and solder on a new cable end to install the switch. Connect the wires in parallel to the rear wheel brake switch. You can also purchase a heavy-duty cable with the switch already mounted from F2 Motorcycles in England. They will FedEx it to your door.
Solid State Voltage Regulator (12v)
Niehoff WA 709 (for 1974-6 Porsche 911 and 914), Standard Motor Parts (SMP): VR124 (Black wire goes to ground, green wire to black wire on bike, red wire connects to black/white wire on bike) (Editor's note: this is assumed to be 12v, if anyone can provide further details, please do.)
Spark plugs (SV)
Champion: H10C (but you will need to grind the end to fit the spark plug wires, it does not twist off), Torch: 4114, Bosch: W4AC, NGK: 5858
One easy change to improve the look of your bike is modern Cloth Fuel Line.
Carb Spacer/Gasket
Heat resistance spacers to prevent heat transfer from the cylinder jugs to the carbs. It prevents gas boiling from your carbs on hot days. Very inexpensive and a BIG must for all CJ's. Contact Gary, he as them custom made to fit your carbs. It comes in two style - See and .
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