I've a 1977 sachs hercules in pretty good condition. I've had difficulty finding info on this beast. A couple questions:
1 - Does anyone know what voltage the lights should run at? I put a couple 6v lights in the back, but I seem to only be able to get the headlights to run brightly if the back lights are off. It's kind of amusing to ride at night... "Front or rear lights?"
2 - How fast should this beast run? It seems healthy- I get a surprising amount of low end. Accelerates up hills as fast as I could ask for, but the thing peaks out at about 20 mph. Thing is, when I get there, the engine just doesn't hum as beautifully as it does at slightly lower speeds. Is it possible I've got a limiter on it somewhere? Is that just how fast these things run?
Likely I'll put on a different sprocket to trade some low end for high end. Anybody tried welding the new sprocket onto the old one so it is relatively easy to switch the gearing in different conditions?