gs 150 - (147 cc / 116 kg) : 1.267 (power:Weight ratio) -- compression ratio: 9.2:1 (ohc engine)
piaggio (126cc/112kg) : 1,125 power: weight ratio -- compression ratio : 10.1 : 1 (ohv) 11 horsepowers (8.3kw/8500 rpm)
DYL - 124.1/98 kg ~ 1.27 power-weight ratio - compression ratio: 9.3 : 1 (ohv) 9 hp (7.2kw/8500 rpm ??? ) (is this correct??? I've read that most OHV 125cc's develop 11hp -- and 125cc OHC's give do hit 15hp!
cg- 125 - (124.1/99kg) 1.25 powerweight ratio - compression ratio 9 : 1 (ohv) , supposed 11hp
Interesting info about why Honda switched to making OHV bikes - they're easier to maintain vs more powerful OHC engines.
The CG125 was developed from the CB125 for third world markets. There were many parts in common between the two. The two models were very similar. The main difference was in the top ends, the CB had an overhead cam. One fault with many Honda OHC engines of that era (generally denoted CB), was that they had a tendency to wear the camshaft bearings if oil changes were skipped. The CG engine was developed specifically to address this problem (amongst others) as Honda realised that riders in developing countries performed little or no preventative maintenance. To make the bike more reliable with minimal servicing, the CG125 uses overhead valves with push rod, a washable foam air filter, and fully encased chain guard.[
Honda CG125 - Wikipedia, the free encyclopedia
This whole bikecomparison thing is annoying and giving me a headache. Ofcourse I don't want to open the engine of a brand new bike, at most one can experiment with a sprocket for higher topspeed on lower accelleration.
I'm definately buying a bike for thrill and many of you will think I'm crazy to get a 125cc after only practicing on a 70cc for 2 months, this will be my first bike. A 140km/h top speed will give me an easier time overtaking most traffic on the gt road, but I guess I need to look into an RX-115 engine or 250cc import.