I've flown a stack of Revs smaller than Rev II's and they were really twitchy,but blindingly fast. They were on short lines, maybe 30', and the wind was strong, so that was part of the deal.
The standard Rev II has a 74" (I'm pretty sure) LE.
I don't remember the length of the the mini Revs, but I think he said he used standard length spars so I would guess they would have been 32.5" x 2= 65".
Anyway, that's what I would do if I made a mini Rev.
That's probably what size the Rev Backtracker is, if you've ever flown that.
Hmmm, I already have the rev II stack that I love. But....
Lets see, 2 yards of nylon seconds= $10 if you're not too fussy about colors.
5 P200 or P300 spars x $6 =$30
6 endcaps x .90 = $5.40
Bungee and reinforcements and whatever else I've forgotten (like a ferrule for the LE, and bridle line, and LE sleeve material...)= $5
total cost= approx $50
Or I wonder how well a pultruded spar would worK? I've got these in my Rev II stack except for the LE of the first kite, and they haven't broken yet.
Lets see, make it even smaller.... would a 58 or 60" even be flyable?
1 yard of 60" wide fabric= $5
1 60" .2540 spar for the LE= $6.25
1 48" (would a .2200" work?)spar, cut in half, for the two down spars= approx $4
6 Endcaps x .90 = $5.40
Misc stuff (don't need a ferrule this time)= $4
Total Cost= approx$25
actually 10% off for AKA members, but shipping eats up that savings real quick, so we'll just ignore that.
OK, I changed my mind, that's what I would make. Without venting in the LE and being that small, it's going to be really, really twitchy to just fly one. A stack would probably be more managable.
This may go on my list of things to make/repair this winter. If it's a total washout, the lost cost would only be the fabric and one cut spar, I could re-use everything else.