So my Radikal is nearly ready for it's maiden flight(s). It is my first gasser though, so I was hoping to get a little info on tuning.
I've done a fair bit of reading on gasser tuning, but it seems there's a lot of conflicting info out there. I'm a procedural kinda guy, so what sort of procedural approach would you gasser guys take to getting things tuned in right?
Here's a few questions:
1 Do you start by tuning the high or the low needle? Why?
2 What effect does oil mixture have on tuning? Can you go leaner if there's more oil in the mix?
3 What sort of temp (ballpark) should I be aiming for? Where should I measure said temperature?
4 If I do end up running lean on the high end briefly (a couple climbouts) will it damage the engine?
5 Any big screaming warning signs that I'm going to destroy the motor due to lean mixture? ex: On a nitro you look for no smoke, and bogging under load.
FYI: This motor has already been run, and just finished breaking. I plan to run a 40:1 mix.
From what I've read starting at 1 1/2 turns out on both needles is generally a safe starting point.
For procedure I was thinking of getting the thing idling, then leaning the low end needle until it starts to run crappy, then backing it off 1/8 - 1/4 of a turn. After that, just doing climbouts and progressively leaning the high needle for full power until I get into bogging due to a lean mixture, then again, backing it off 1/8 - 1/4 of a turn.
Sound reasonable or am I going to break things?
Any suggestions are appreciated.
If it can't hover, it ain't worth flying.