> I recently purchased a '90 Yamaha Riva Jog for my wife to ride. It's got a > little over 1000 miles. I also have '79 Puch Magnum MK II with 9500 miles. > > The Jog has buckets more power than the Puch, even though they're both 50 > cc. Any ideas on why this is? I've been thinking of selling the Puch > 'cause it won't quite make it up the hill to the house. The Jog hauls at > 20+ with no problem. > > The Puch seems to run will enough, just not enough grunt to make it up the > hill. The plug is new and I had it serviced recently by a knowledgeable > moped mechanic. Any thoughts? The Magnum MKII has a puch Maxi engine I believe. Those engines just aren't that good. They don't have a lot of power at low rpms. What you can do is get a bigger sprocket on the rearwheel, but that will also result in lower top speed. Robbert Newsletters, Tips and Discussions on Your Favorite Topics
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