-
This is for a flight
Ah ok, check if the airline have max dimensions for a bike box, they might(will) be cunts.
Thinking about it, the massive bike box I have in mind might even be too big to get on a plane though.
Just go into the biggest bike shop you can find and ask for a box, if they don’t have one they will keep one aside when they do.
-
Check local Evans - picked up couple of boxes las t night for the same purpose (flight). They have some extra large ones (electric bikes) which you can resize down. To fit two sets of wheels you'll need 22cm width minimum, 25cm perhaps. Wheels off and strapped to the frame on each side so frame rests on them. Use cable ties and pipe insulation and any old paper/cardboard to double up on sides. Take rear mech off and wedge rear dropouts with piece of wood, remove forks and strap to top/seatstays. Have travelled many of times this way. BA is best as it takes bike as your luggage, no extra cost.
If you mean the newer breed of massive boxes that mountain bikes come in virtually fully assembled, then aye. Gravel bike and two wheel sets easy.
If you use a normal bike box then fuck about taping wheel box’s to it, depending on its final shape, it might end up being too chunky and exceed the max dimensions if you’re posting it.
I got a bike box from my lbs recently and it was fucking massive, it might have been an ebike that came in it. A 54cm track bike could fit in it without taking the wheels off.