RE: FROG 80 Mk 1
My thoughts are similar Greg. The quality of casting and materials used do not appear to have been compromised for what was a "budget" priced engine at the time.
Under the R/H lug there is the enscription 'MADE IN ENGLAND'. This is in the finest and smallest raised lettering I have ever seen on a model engine casting. Yet, perfectly readable if your eyes are good.
I am fortunate. The fits of the working parts in the example I have really are exemplary. Despite the ventral web amputation it has only been lightly used to date. I am looking forward to running it. I would like to use my Master Airscrew 7 x 3 propeller, but have misplaced it. A white Keil Kraft nylon 7 x 4 (shown above) will be utilised in it's place. Its small diameter mounting hole has never been drilled out, and is a perfect fit on the shaft.
If anyone has a set of instructions for this wee beast (mine came to my home without a box or manual) I would be most obliged if you could scan an upload them, so I may print a copy.