UPDATE! The motor mount kept loosening about every week, but I discovered that LocTite makes the repair last much better! Details on the following pages.
I ride the Yuneec E-Go electric skateboard. It's really great for getting around short distances and commuting. It's quick and easy to use and carry, and you don't have to worry about parking or locking it. Plus, it's a lot of fun to ride!
However, I find that after using it a little while, the motor mount gets a little loose. If you grab it, it moves back and forth around the axle about 3 or 4 mm. It's not much, but it seems to make the acceleration feel mushy, and I think it probably loses efficiency on acceleration and braking.
The manual doesn't describe how to fix this, so I'm going to tell you what to do!
Step 1: Tools You'll Need
You'll need the following for this repair:
- the maintenance tool that came with the E-Go
- a medium Philips screwdriver
- a small flathead screwdriver
- a small crescent wrench
- LocTite Blue 242 (available at most hardware stores)
- a paper towel
Step 2: Remove the Belt Cover
Using the Philips screwdriver, remove the two screws that hold on the belt cover next to the motor. When you take off the cover, you will see the drive gear and the belt on it.
Step 3: Remove the Drive Wheel Nut
Using the maintenance tool that came with the E-Go, remove the nut holding on the drive wheel. There is a small lock washer under it; remove that also.
Step 4: Remove the Wheel and Belt
Using the flathead screwdriver, gently pry up the belt while pulling on the drive wheel with your hand. The entire wheel and belt should come off fairly easily.
Step 5: Locate the Mount Screws
Find the three screws that hold on the motor mount, as shown in the pictures, and the nuts on the other side that hold the screws in place. You will find that these are loose, and that is what is causing the motor mount to be loose.
Using the crescent wrench to hold the nuts, remove the screws with the Philips screwdriver. Keep the nuts matched with the screws and set them aside for now.
Step 6: Tighten the Mount Screws
Put the paper towel under your work area to avoid getting LocTite on anything. Dab a little bit of LocTite on the threads of one screw, and blot off any extra on the paper towel. Using the crescent wrench to hold the nut, tighten the screw back into place with the Philips screwdriver. There are a few hints to keep in mind here:
- make sure to tighten up the crescent wrench pretty well, to avoid rounding off the nut
- make sure to push hard on the Philips screwdriver, to avoid stripping the screw slots
- when tightening the first screw, hold the motor firmly against the axle with your hand; this is the position where you want the motor to stay
Repeat the procedure with the other two screws.
Step 7: Replace the Wheel
Put the Philips screwdriver through the wheel to line up the internal parts, and slip the wheel off the screwdriver onto the axle while stretching the belt over the drive gear with the fingers of your other hand. It's easier than it sounds, once you have everything in place.
Put the lock washer and nut onto the axle, and tighten the nut with the maintenance tool. Do NOT tighten the nut as hard as you can, because this will cause the bearing to bind, reducing the life of the bearing and also reducing your speed and range. Instead, tighten it with just your fingers holding the tool until you feel moderate resistance and have to strain to continue.
That's it! You should feel an improvement in the handling of the board immediately.