I don't think I get burned out as much as I get bored.
Since I came on the board I have:
Tweaked, built, painted a FB. (Blown up)
Bought, tweaked, raced the Abomination. (Buried in the garage for the last 8 months.)
With Curmudgeon, built two lemons cars, raced 7 events. (One to scrap, one in the garage.)
Helped restore 3 antique tractors. (Sitting at a friends, unused.)
Restored several antique engines. (Collecting dust in the shop.)
Collected, repaired, restored 15-20 antique clocks.
Restored a lathe. (Collecting dust in the shop, but still used on occasion.)
Built a gas turbine out of a turbocharger. (In a box collecting dust.)
Bought, built and rebuilt a Samurai. (I love that little trucklet, but it's not a project anymore. It's much like GPS's motorcycle.)
Built the Jet Boat. (It hasn't been in the water this year, no time. )
Bought and rebuilt a truck camper. (It's ongoing, but untouched until it cools off some.)
Also started several other abandoned projects, that may or may not happen in the future.
Plus countless other little things that caught my fancy. Bikes, camping, hiking, canning, cooking, solar...
I emailed a guy Saturday about a wood boat that needs restoration. I'm still not sure if I'm glad he didn't respond.
Squirrel.