After a year of having this bike I think I have finally got it in decent running shape, and by that I mean it hasn’t died on me yet. It’s from 2006 or so, and only had 30 miles when I got it. It has about 80 miles on it now, which means that it isn’t even broken in yet!!!
I spent a lot of time trying to get it to run, which meant getting zapped while trying to check for spark with a test probe. Spent a significant amount of time trying to get this old aftermarket pipe to fit onto the frame by bending the bracket I bought for it enough to actually fit. Also cranking over the engine dozens of times only to find out the gas tank was bone dry. I ended up pouring some gas from another bike into a beer can, then pouring that into my bike, and tilting it downhill so it could trickle into the carb.
Well it turns out, there’s a gas vent on the frame that if it isn’t pressed, the gas tank will only fill halfway. This is why I haven’t been able to fill it but a half gallon. Maybe this is also why it would mysteriously stop running?
So now that it would start, it was time for a test ride, and because it has 15 year old transmission fluid in it, the bike would stall out after the clutch engaged in first gear, then it would stall out if it shifted into 2nd gear. The bike has two gears, and a wet centrifugal clutch for both gears. However on these test runs it would actually go faster than 30mph, all the way up to pegging the speedo, with just taking off the air filter and putting a new pipe on it.
I then changed the transmission fluid, properly mounted the pipe, and tested a few other air filters to see which ran best. It seems to prefer a mesh filter. Air / Fuel can be a pretty delicate balance and get you varying degrees of performance, especially when the weather changes and the air gets colder and denser. I tried with the stock air filter, and it was so restrictive it would cut off at about 35mph.
It’s not…Fast. It will climb any hill but do so at a sluggish 20mph and it won’t gain speed at all. It’s a pretty heavy bike and it has a stock tomos motor, so even with a pipe it’ll struggle on Seattle’s hills. However, it’s very very comfortable. The seat is huge. The handlebars are swept back so you can ride upright. The suspension and tires are bigger than a regular mopeds, so the ride is much more cushy. Even the hand grips have vibration absorbing foam on them.
I think I’ll see how i like this and maybe slap an alukit 70cc cylinder on it, which is on my other tomos, the one that goes scary fast in 2nd gear.