FWIW. The previous Taurus engines (before Partner passing) were in our opinion on a par with any 50 cc gasser. In 05 after reorganizing we designed a new TS52 which after testing we found a power increase that would allow the engine to turn larger props without problems.
For instance, 24x8 Menz S in the 6900/7000 range. The new design can be loaded without too much concern.

Joeairport.
Engine weight s-plug,prop bolt,washer,radial mount(no standoffs) on our scale 3#5oz

Pitts style muffler 8oz sound 94dbs @ 9 feet 22x10 NX (wood) 88db 23x10
C/H Ignition box 2-3oz