What kind of engineering do you practice? Mechanical/Civil/Structural/etc. A looooong time ago, before I went over to the dark side of the Force, I was a comical (oops, that's chemical) engineer.

I wouldn't do the flaps... no real need on a Tiger, especially the 46 sized model.

There are several phrases that can turn a guy's blood cold: marriage proposal, "I'm pregnant", IRS audit, etc. Having survived the first two (happily, I might add) and never been exposed to the last, "Gear Doors" are two words that currently reduce me to a quivering lump of jello.

But they wouldn't be that hard on a Tiger2. You could take the simple approach, which would be a hatch cover attached to the strut that covers the outer half of the wheel well, and leave the inner 50% of the wheel well open.

But if you decide to get fancy, on the inner doors you'd have to design some kind of spring loaded mechanism that holds the door open when the gear are extended, with a lever attached to the door that catches the wheel on the retraction stoke to hold the door closed. I think full sized T-34 Mentor's did it that way. The really sophisticated approach would be to use yet another servo, in conjunction with a Jomar door and gear sequencer, to open and close the inner doors as part of the retract/extend cycle. Which is probably more time and money than I'd want to spend, especially on a 46 size airplane.

I seem to be getting really good at spending your money! Just to keep you inspired, a couple of reminders of the end result.