I bought it for $230 and I knew that even if it needed work (which it didnt) it was well worth it for a puch. One is chopped into a chopper and the other is, or was stock. A Puch Maxi is a safer bet and can be made to go faster than this, but the Magnum has the looks! It is #500 and I bought it from zippymoped.įrom day oneI have used Puchs as my ride. A 14mm `tall` intake can be used if it is filed down slightly and the top speed goes up to near 40mph with a 220lb rider. The cylinder/exhaust will make it (barely) but the intake and carb will hit the injector `hump` in the casting. The cons with this bike are few.I don`t like the oil injection system that much and I`m not a fan of the `low` handlebars. Puch quality was very high! I had an MKII back in 1980/81 and put around 11,000 miles on it without any major problems. It has less than a thousand miles on it and a very solid ride. I need probably a solid day to finish out the electrical wiring for I’ll need to figure out how I’m going to strap / fasten thisĭown for security, and protect it from the elements. This battery size fits perfectly underneath the seat on the luggage It comes with a 5 Amp charger, so it only took a few hours to charge I received the 20 Amp Hour battery that I ordered fromĪliExpress. I also replaced the rear brake cable, since the one that came on theīike was broken. Sand down a few places on the pedal cranks to make it consistentlyĬlear without accidentally striking anything. The pedal cranks just barely clear the protruding motor. I cleaned up the chain tensioner, and sized up a new pedal-side chain: Smaller width creates a problem.īecause the center-stand on the moped was coupled to the motor, I A #420 chain is slightly larger than a #415, so this will work. Pitch, the distance between chain pins.The most important pieces that need to line up: In various parts of the internet, here are the relevant size from the I might eventually replace this with some new stock from Treatland, but not yet.įiguring out chain sizes was quite frustrating. Puch’s usually come standard with a #415 chain and sprockets. This has the same pitch and roller width as ANSI #41 chain sizes (the sprocket), and the same pitch as a #415 chain, with a slightly larger roller width (which should fit). 14 tooth sprocket, for #41 chain size.Here’s what I ended up using for everything: I can’t tell you how good it felt to finally get the main drive chain
1978 puch moped upgrade#
If not, I might have to upgrade to stronger I’ll need to stress test the roller-pin to make sure it can handle the
In practice, this is unlikely to ever be necessary.
Long enough to clear the moped frame and align properly with the rearĪ neighbor friend was able to connect me with a machinist who helpedįashion an adapter for the motor shaft (in exchange for a nice bottle I shared some of the challenges I faced with the motor shaft not being
1978 puch moped series#
This is a blog post in a series on converting a 1978 Puch