I've been enjoying designing and fabricating different things for my own pleasure for many years. One of my friends who's been helping me has always told me that I should make money from my designs. With my life changing right now, that suggestion is starting to make it's way into my mind. Thing is, I'm not the business type. I don't know which of my designs I should sell, and in what form (plans, kits, complete, other?). I'd like some opinions and thoughts from you guys. I don't want to get rich, just put a bit of funds into my racing budget.
So here are some of the things that I designed, and built (only kept the ones that are good functionnal designs)
1 - Two model of little ride-on airplanes for kids up to 5 years old. They are made of wood, and they were really popular with my kids. I'm thinking these could be good to sell as woodworking plans?
2 - A tadpole recumbent trike bicycle. I rode on one, and thought it was great, but for some reason, the commercial models are all 1k+. I built this for about 200$ as a touring model. I don't think there would be a commercial venue for this, but I might be wrong.
3 - The pedal boattail speedster I built for my kids (up to about 10 years old). That's the one in my avatar. I did make some plans for that one that I sold on eBay. They were popular, but require some metal fabrication (some welding), so they might have more popular if I produced a few kits?
4 - The electric kid jeep. That thing is cool and could be made to run on gas power too. It's about half-scale to the real thing. The body is made of plywood, but the rolling frame is steel with leaf-springs on both axles.
5 - My metal-working multi-functional thingy machine. I built it primarily as a louver punch press, but because I used a hitch receiver tube on the bottom and top, I can mount pretty much anything I want in it. I use it as a bending-press, punch-press, louver-press, to mount my bead roller, my shrinker and stretcher, and I will probably add my tubing bender soon. It's neat, but I figure anyone that's this involved in metal-working can come up with their own version, so...
6 - My car lift. Sorry for the terrible picture, but this is honestly the best I have and it's covered in crap right now. It's a two post, full-rise, 6000lb real capacity (ie the vehicle can have up to a 65/35 weight distribution, and still be lifted), fully-mechanical, low demand on the slab (free-standing in theory, but I'd never chance it), low ceiling (columns are less than 8 feet tall) car lift. It uses two farm jacks, one in each column, with a balance chain in the middle, so you can use only one jack at a time. It works well, but it would need to be slightly re-designed for production, and because it is mechanical, it is designed for the home garage only. I'm sort-of afraid of the investment this would need to sell, and the liability it would expose me to.
So any ideas or opinions you guys might have would be appreciated. These are the success' that I think could be interesting.