RE: Norvel's A6R AME .061 R/C vs similar sized engine
I've got several of each the Norvel .049, .061 and .074 engines in both AME and BigMig versions in the older ABC and the newer Revlite cyls and they all run great. My oldest one is 6 years old and still going strong; during the same amount of time I wore out an OS .40LA. They all use special plugs, but the plugs are less expensive than an OS #8 and often last a year or more. I also have a TT .07, but it is heavier and not very powerful compared to the Norvels. I think that the Norvel .074 is one of the best sport engines of any size. It has a good idle, lots of power for its size, it's reliable and it's inexpensive.