I'm going to build a new wagon using your standard Radio Flyer kids wagon for nothing more than the tub. This will be for automotive-themed swap meet shopping use, not beach. Here's where I need help--
* I need it to run off 12v, as the "theme" of my wagon is a big radio/sound system on my Radio Flyer wagon, and I already use a 12v Optima Yellow Top battery to power it.
* I need it to be able to free-wheel when I don't need electric assist
* Simple on/off is fine, no speed controller necesary as long as the speed/gearing is normal walking speed.
* Some of the swap meets I go to are on inclines, hence the need for electric assist. With battery, amp, sub, etc it's ~150lbs without any shopping loot.
For a visual, I am making an replacement/upgraded version of one I currently have:
We have dozens of beach wagon kits available on this page: https://cart.electricscooterparts.com/store/Search.aspx?SearchTerms=beach+kit