Kiwibob's Engine test stand

For years I've been messing around with engines poorly bolted to scraps of wood and a piece of wire to control engine speed.
One day I sat down and designed this "ultimate" test stand, it is so simple; a piece of pine about 15" x 6" or so, with another smaller
piece mounted above it. The fuel tank can be raised or lowed with packing pieces, a screen keeps the worst of the fuel off the RX etc.
I mounted an old RX, which was suspect for flying, plus a "past its' use by date" battery, and an old servo (it's an "OS" servo!!, how old is
that?? I got the ally stand off EBay for about £15, fits most engines, although there is only a few mm clearance for the Saito 125, so maybe it's
 near it's limit . So I just use my TX as per normal, start the motor and use the TX to control speed as if it were in a plane.
This picture was taken while I was running in my New Saito 125 FS, I had a very rich mixture and left the glow driver connected

 

This is a close-up of the engine stand, I suppose if I had some basic engineering tools, I could make it for a few quid!!