Difference between revisions of "Honda CB125"

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The CB125 came in two major versions the '71-75 "S" version and the '76 and later "J" version although the bikes in the US retained the S designation.  It features an overhead camshaft (OHC) engine with a 9500 rpm [[redline]] and offers 100 mpg. It could comfortably maintain speeds of 55 mph and had a top speed of around 65 mph. The [[engine]] could last tens of thousands of miles with only minimal attention; however, the oil had to be changed regularly (700 miles) to prevent premature wear of the camshaft bearings. The newer "J" model sported a two piece head, 124cc displacement, and a larger carburetor, but it did not perform as well as the earlier models.
The CB125 came in two major versions the '71-75 "S" version and the '76 and later "J" version although the bikes in the US retained the S designation.  It features an overhead camshaft (OHC) engine with a 9500 rpm [[redline]] and offers 100 mpg. It could comfortably maintain speeds of 55 mph and had a top speed of around 65 mph. The [[engine]] could last tens of thousands of miles with only minimal attention; however, the oil had to be changed regularly (700 miles) to prevent premature wear of the camshaft bearings. The newer "J" model sported a two piece head, 124cc displacement, and a larger carburetor, but it did not perform as well as the earlier models.


[[Image:CB125SS.jpg|thumb|350px|CB125SS]]
These are interesting as the side cam drive type engine is a lot lighter then the center cam chain type, the bore and stroke also favors higher revs and more performance. The weakness if this machine, rather like the CB92 before it, was the four speed box compromised its performance, and the lack of a rev counter was also a problem.


These problems were addressed with the very much rarer Honda CB125K2.
 
== Specification of [[Honda|Honda]] CB125SS model year 1967 ==
 
 
*Engine type: Single overhead cam twin cylinder two valves
*Bore and stroke: 44mm x 41mm
*Compression ratio 9:4:1
*Carburation: twin Keihin 22mm slide type
*Weight: 110kg
*Dimensions: 1975mm x 745mm x 990mm
*Displacement: 124cc
*Power 15 bhp @ 11,000 rpm
*Torque 1.05kgm @ 9000 rpm
*Tyre sizes: Front 2.50 x 18/rear 2.75 x 18




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