Thanks for taking the time to make and share a video.
Yes seems to be a problem with the back wheel.
You are lucky though that the hip gears haven’t broken yet-I would advise only using Loona in companion mode from now on. Say “Hello Loona, stay with me” or “Hello Loona, companion mode” while connected to Wi-fi and Loona will become docile. You don’t want the hip breaking, as there is no fix for that currently.
These links have info on repair tutorials on YouTube for the wheels you may find useful:
Two interesting video tutorials providing instructions on how to fix leg/wheel problems encountered with the first Kickstarter batch of Loona.
robotsaroundthehouse.com
Problem: Loud grinding noise coming from Loona’s robotic legs. It can be caused by either of the following things: Loona motor grinding noise cause #1. The gear on the central peg might have moved out of place due to vibrations from Loona’s movements and has slipped, causing the gear on the...
robotsaroundthehouse.com
Have a broken Loona and want to find a repair solution locally? Look up a local electronic projects technology community known as a Makerspace where techs and developers work on designing electronics products and create prototypes with the use of 3D printing. Here is a link to a local...
robotsaroundthehouse.com
I can’t give you advice regarding sending your Loona back to Keyi for repairs due to Keyi implying legal action will be taken against those who generate a negative image of their product. Instead I advise you dig around and gauge the opinions of others, Kickstarter and Indiegogo are great places to start.
From my own experience submitting a request for ear repair kits on July 22nd as a Kickstarter backer who spent over USD$1,500 and had to pay a currency transaction fee that Kickstarter never disclosed and import taxes and duties on top of that; yet as of today have heard nothing back from Keyi regarding the status of this ear kit form.
If they aren’t going to prioritise a KS backer who spent over a grand...