In order for your outdoor glider to operate smoothly it is recommended that you apply joint lubricant to metal joints and bearings twice a year or seasonally as needed. For more information on care for your glider please refer to this website: http://www.doityourself.com/stry/how-to-care-for-your-porch-glider
Spray the hinges or areas that rub with WD-40. If that doesn't work, try coating the rubbing areas with wax, a wood floor wax should work fine.
They could the could not
No, absolutely not. Water bottles can, and do, leak... In fact, any source of water has the possibility of malfunctioning. If the water source malfunctioned, the gliders would be without water for days. Also, if sugar gliders are being fed a proper diet (with fruits and veggies), the food should not be left out for more than 12 hours (less than, ideally). Leaving it out for longer could result in the sugar gliders getting ill. Beyond that, anything can happen when you're gone. The sugar gliders could get injured, escape, or become seriously ill. Please do not leave your sugar gliders unless you have someone to come in and check on them twice a day.
If the guinea pig is squeaking it is either happy or just excited to see you, or it could be hungry if it doesn't have anymore food, or water.
Yes, helicopters are not airplanes. I think hot air balloons are considered flying. Also, people fly on hang gliders. Dirigibles are not airplanes.
rubbing from brakes or rubbing from frame
The Wright brothers built the first glider in the world that could be piloted
The Wright brothers built the first glider in the world that could be piloted
A German named Otto Lilienthal.
You may need power steering fluid
it could be anything, from the axles to an engine with a lack of oil.
Check your ball joints and your spring hangers
The Wright brothers built the first glider in the world that could be piloted