ORIGINAL: C. Grant
hey guys, i'm a new-b to this hobby and just finished building my Spadet LC-40 trainer aircraft.
i just got a brand new TT .46 Pro last night and have a few questions...first, i found that the directions for the break in aren't that great, and am wondering how to break in the engine the right way....with the engine, i have a du-bro 2" spinner, 2 11x7 and 1 10x6 MAS props (this is what a friend told me to buy. the 11x7's are for the break-in and the 10x6 is for added speed later on....this is what he told me..), and a Fox RC Long 1.5V bar glo plug....also i need to know what type of fuel to use...
You have the props backward -- the 10-6 should be used for break-in (to keep the load minimized). The 11-7's are actually too much prop for best performance from a 46 (even a TT Pro) -- they are 60-size props. You certainly should NOT use them for break-in. 11-5 & 11-6 are good choices, & if you want speed, a 10-7 will do nicely.
Most sport engines (including the TT Pro) work very well on 10% nitro -- you won't be able to tell any difference with 15% , it costs more & it will shorten your glo-plug life.
The TT 46 Pro really runs well on OS #3 plugs, & OS #8 plugs. The idle-bar plug is totally unnecessary with that engine -- it idles dead smoothly & picks up instantly. I find that its performance actually falls with an idle-bar plug.