The Aurora is the K Mills-the K stood for Kumar-surname of the Indian businessman who first bought the tooling from the original UK manufacturers...the company which produced them was IIRC the Aurora Model Manufacturing Co located in Calcutta-the original company also produced several other UK designs either as direct copies or as the basis for a modified engine design.

Way overpriced at 95 pound if its a second hand example-a good original might sell for this much-even a new Aurora would have retailed for less,An Irvine 1.3 probably commands the highest resale price-based both on scarcity (they weren't around for that long) and the quality of manufacture. The trouble with the Aurora one is that the quality varied considerably over the years-not just the machining standards-but also the material specs-some had crankshafts that were as brittle as carrots.....though the problem was more pronounced with the 75 Auroras. A good Aurora is quite acceptable-but you can never tell whether it is good or bad without test running and checking it-making the purchase of one a bit of a lottery.

If you specifically want a Mills 1.3 you'd be best advised getting hold of an original or Irvine-though note that spares for the latter have largely dried up-and parts are not generally interchangeable with the original UK ones-though the Aurora and original UK ones are largely interchangeable in parts-though there are a few pitfalls-such as fitting an aurora shaft to an original will require the Aurora prop driver to be used as well, due to the different PD mounting-even though the shaft may have the same journal diameter and length as the original British one.

ChrisM
'ffkiwi'