Originally Posted by
Rcplanedan
Well another great day with the boxer, except had to lean the mixture a fair bit today, slightly weird..
A significant change of propsize CAN do that, and it also depends on the runtime since conversion. Several of my engines were operated straight from new on gasoline, most of them only stabilized WRT mixture settings after 10~20 runhours (easily half a season), but the ones that were bought used and thus broken in on glowfuel, still needed quite a bit of time (5~!0 hrs) before they stabilized. Changes to the system (like a different prop, or the same engine transplanted to a faster or slower airplane) also often require mixture setting corrections that somehow only become evident after some runtime.
You are
AFAIK still running on the needles only, and then needle tweaks are inevitable with changes in climate. The latest versions of the solenoid systems largely compensate for that.
Originally Posted by
Rcplanedan
i had another member to meet at the club he liked the boxer till i told him its converted, he looked at me with worry and told me his story of a purchase, he brought a os ft300 of a guy that sent the engine from Australia to mmm and then i guess sold it on to this guy cause it didn't run well, this guy tells me of his pain trying to get it running properly with little luck,well after conrods overheating he purchased new ones then still had more heating problems and now sits on a bench..he tells me glow engines cant run on gasoline because it causes too much heat, i simply replied that carburettor is the big problem, told him to see how long mine lasts , that guy had no idea what he was doing, but insisted that gasoline is to blame in total..
That kind of thing tells the men from the boys. Conrods overheating? My first question would be what oil ratio he is running.
I know the ASP at the very least, survives a 20:1 ratio fairly well, in fact runs excellent on 15:1, but I prefer 10:1 myself, just because I have a fairly wide range of engine sizes converted (among them an OS Wankel that I absolutely do not want to risk) and I don't want to carry around different mixes.