GroundBound,
There are no rules for currency on non-type-rated aircraft. If you're legal to fly an aircraft, and you're current on flying aircraft of the correct class, you can legally fly any aircraft in that class. Or something like that, anyway...
Whether your club rules or insurance company will let you do that is a different question. And whether it's safe is a different question again.
As to why I've flown so many different types, there's a reason for all of them:
- Piper Warrior - did my PPL on this
- Piper Cherokee - did my spin training in this, since you can't spin Warriors. Club rules say that if you're current on Warriors (the club has a 4-week currency rule), then as long as you've flown a Cherokee once, you're current on Cherokees. So I sometimes hire a Cherokee if there's no Warriors available
- Super Cub - did my tail-dragger check-out on this. It's also my favourite aeroplane of all the ones I've flown so far
- Arrow - For my complex (retratable gear and wobbly prop) checkout. Also used for a couple of long (several hundred mile) cross countries that would have been very uncomfortable in a Super Cub
- Aztec - Can't afford a twin rating, but I fancied 5 hours of dual on a twin just to see what it's like
- Great Lakes - 10 hours of basic aerobatic training
- Pitts S2C - The school where I did my aerobatic training has 3 of these which they rent out (dual only), and I couldn't resist!

- Europa - I bought a share in one, so now I have to fly it! Not that I'm complaining - it's a great plane

FFF
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