ORIGINAL: kingaltair
ORIGINAL: rg1911
[b]Looking at that huge area behind the firewall, I'm thinking about building a shelf for the fuel tank to get it up closer to the level of the carb and mounting it back, closer to the CG. That would leave room for separate throttle and nose gear servos right behind the firewall. I'll need to make sure I don't cleverly block access to the bolts that hold on the wings.[/b]
Richard;
You can raise the level of the tank to the right height by using foam padding or some other means to raise or lower....the tank needs to be packed in foam anyway to reduce frothing of the fuel.
For what it's worth, but mostly balancing purposes, I'd advise against mounting servos that far toward the front. Servos up front will add to the weight of the fuel (early in the flight), plus the extra weight of the larger engine, and might actually make your balancing problem worse. There would also be more of a chance to damage the servos in case ''accidental-you-know-what'' happens, (the front end usually gets the worst of it).
Just a thought. BTW...my plane balances well with the servos located where they are in the prototype, and I am only using an OS .91 2-stroke.
Duane
Duane,
Good points. Since the tank needs to be raised at least three inches, I think I'll still build the shelf and use the foam. Or I could replace the 16-oz tank with a 20. That's a LOT of room there. But I'll see how long flights last before changing to a larger tank.
Thank you,
Richard