Schwinn Airdyne AD3

I picked this up for $40 a few years back. No idea how many times its been bought/sold but the guy I bought it from also bought used. It works just as well as it did in the early 80s. At some point it was spray painted black. The control box doesn't work at all, but I use my watch/phone for HR, Time, and Calories anyway as its more accurate. Overall these are great bikes and well worth the little you pay for them. I've used many good fan bikes too like Rogue Echo and while those are smoother and have digital displays, workout you get from them is exactly the same.

Best $75 I ever spent back when I opened my first training studio in 2015! The woman who sold it to me did not want to part with it!

This was my fist cardio piece. You can almost always find them cheap second hand <$100. They’re solid and get the job done. I mostly used mine for warm ups and occasional conditioning focused workouts but ended up selling it because I just didn’t use it much

I love my aerodyne. The only cardio I can tolerate. My dial doesn't work but I don't care.

The ancestor to the current versions of the Rogue Echo Bike and the Assault Bike. Chain driven and sounds like a jet engine its build like a tank. Display doesn’t display much aside from time and RPMs but just sit down and start pedaling hard and don’t worry too much about the rattling.

I love my cardio equipment to be Pueblo Gold. This thing is a beast and is awesome for sprints. I fitted mine with a monitor from Assault Fitness, which is a nice, fairly inexpensive upgrade. Newer bikes feel more solid and are generally quieter, but for the price this thing is great. This bike makes you just as tired as the new ones.

This airdyne bike is the definition of old school. It can be bought for cheap on Facebook marketplace (I got mine for $50) and thus ranks high in terms of value. Performance-wise, it will kick your butt as much as the newer air bikes from Rogue and others. I use it for HIIT ("high-intensity interval training") Tabata sessions couple of times a week to improve my VO2 max. They say chain-driven bikes like this require more in terms of upkeep than belt-driven ones (e.g. Rogue's Echo Bike), but I haven't found that to be true. I apply 3-in-1 oil to the chains about every couple of months, and that seems to be enough to keep it in good working order. While it is not "overbuilt" like the newer air bikes, it is built to last and has proven itself to those who care more about performance than pizzaz in their cardio machines.

The king of the garage sale circa 2000 - everyone wanted rid of them and there was one in every grandparent household in America. Move forward 25+ years and they are rebuilt, rebranded, and still doing the same job they did before. You won’t go wrong with a “classic”

Great no frills bike. Can often be found used for less than $100. No fancy apps or screens, but will still kick your ass. Generally requires more upkeep however.

Had this model for a few years. It does the same job any of the new ones do.