RE: Are the new Thunder Tiger 40s actually 46s?
John, The paperwork with my TT Pro 40 says that a 40 weighs 16.03 oz. and the 46 weighs 16.05 oz.
That's for the latest version with the "swept back" needle valve. I weighed one of my engines which had a
Higley aluminum safety nut, and I got 16.7 oz. I don't have a 46, but I would think that the 46 would be lighter, because it has a thinner sleeve. The 46 has a slightely longer stroke, so the sleeve is a little taller, but I would think that the larger bore would reduce the weight of the sleeve. Does anyone have a 46, and a 40 that they can weigh side by side? Greg