This might sound like a dumb idea but I was thinking about some general comment on how people launch there new plane and only have a few seconds to make trim adjustments before a possible crash and because of this rely on others to trim them in for them.

I work as Financial Controller/IT manger in a large engineering company, from time to time the guys welding use large portable extraction fan, I was thinking of supporting the plane by 3 strings, say one off each wheel and one on the top center point. Now with no engine power hit the fan unit that is pointing at the model, hoping there is enough air speed the plane would lift and I could do trim adjustment on the plane with no chance of cashing.

So what do you think?? ..Would that work.

Dogz,
Not sure that would work, as you have a lot of other things at play when the plane is flying, torque, propwash, p-factor, ect. Might work for the glider gang though. Also you might get the plane out of shape, and rip it up with your tie down points.
Having said this, I'll say this- no idea is a dumb one- it's how the light bulb ect. was invented!


Jetts

It might work, up to a point, but it's not really necessary. There's really not that big a rush to start trimming the plane after lift off. It's not usually that hard to hold the needed trim in with the sticks until a good, safe altitude is reached. Then you have time to play with the trim. If it's so bad it's out of range of the trims, you can still usually get it back down in one piece. A novice flier could get in trouble pretty quick, and that's why it's not a bad idea to let a seasoned pilot do the first trim flight. But keep the ideas coming!

I fly at the same field with crosswind so I know him pretty good. I agree with everything that he said. I will add that a lot of times on a new plane trim flight two pilots will go out for the flight. we use the second pilot to make adjustments on the trims in case the trim is way off. Sometimes when it's that far off it takes all you can do to just keep it flying by yourself, so having a second pair of hands comes in handy. but 90% of the time getting off the ground with a plane out of trim is no problem

just my 2 pennies worth

While your idea may sound plausible to the beginner, if you know anything about physics, you'll know that it won't work for MANY more reasons then we can list here.