Hi folk - this is a repost from my thread for building a powered parachute:

The uncontrolled airport nearest me is not level. In fact, it goes downhill for half the length and uphill for the rest. So, I think I'll need brakes to control my PPC during takeoff and landing.

I'm thinking about using differential braking on my quad to steer the PPC on the ground. I'd put the discs on the rear wheels of the quad. I'm thinking I'd use Azusa 8 inch wheels:

http://www.aircraftspruce.com/catalo...zusa8astro.php

With Shimano hydralic disc brakes and 8 inch (or smaller) discs:

https://www.bikenashbar.com/cycling/...set-sh-blm8000
https://www.bikenashbar.com/cycling/...md-adbr03-base

I would prefer not to caster the front wheels - do you folks think this setup would provide enough ground steering?

Thanks, Michael