Hopper Last

So we made Hopper hop....well sorta! We built a bottom for hopper's body by adding 6 puzzle pieces! Lots of fun making puzzle pieces that fit together in a tight fit. Then we have a small tail piece of foam that helps with the balance and the hop of hopper.

We got in the long axel and put it in for the double axle of the engine. Unfortunately we picked up the extra long one which messed up our balance and looked REALLY strange. So instead we decided to use the shorter 100 mm axle (not the 150). But at this point our engine started acting up! So after an hour and a half of fiddling with the engine, we got it to stop making weird noises when it ran. We also decided to do some soddering. We soddered the batteries with the engine and added an on/off switch. Lot's of fun soddering again.

After all of this our hopper is mostly working. I've shown you tons of pictures so here are the two new ones from friday:
This is hopper with the 150 mm axle -- doesn't it look weird! you can see the added puzzle pieces at the bottom of the body added for stability and balance.

So in order to force the rabbit legs to always be parallel to the floor, we drilled three holes in the bottom and put in screws with washers through them. This really helped balance the legs. The picture above shows the different iterations we tried with getting the balance of the legs right.

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