ORIGINAL: KWJ48
with the tank/clunk being higher than the carb, (which is how mine originally ended up with, inverted engine) the line from the tank to the carb will siphon, filling the carb with fuel.
oooooh, I get it. Duh, you are talking about a different problem. That is that the tank sits above the carb and the fuel siphons out into the carb and into your cowl and all over the table and kills the grass and gets on your shoes and all that
I am sure this is worse on this plane with a Saito because for some reason that I have yet to research, the fuel free flows into a Saito moreso than other engines. At least my 1.20 and my 1.25 were that way too. They were the ones that I learned to use hemostats on for that very reason.
Lowering the tank is probably the best option to solve that problem I would agree.
ON going to 30% fuel you DEFINITELY get a boost in performance with 30% fuel. I like to use Cool Power 30% heli fuel. It smoke a little more than non heli fuel but it makes incredible power and the CP fuels are incredibly consistent, moreso than any other fuels I have used. I pay $24/gal for CP but man does it make a YS or a Saito stand up and dance.
Lithium. Lithium is lighter than Nickel based batteries by a pretty good bit. I use Lithium Ion 2 cell 7.4V packs in all my planes now but I am working on switching to A123 packs which is a new badass super stable, super fast charging super high output form of Lithium battery. A 2400(ish) mah Lithium Ion pack will weigh about 2 ounces less than a 1500mah NiCad or NiMH pack and give you about 10 more flights per charge. You will have to regulate Lithium Ion down to 6V but to me its worth it. You can do the same thing with Lipoly, just use a 2 cell pack. With A123 you do not need regulators if you are running 6V servos. They run at about 6.6V for a 2 cell pack.
Again the way of the future is A123, they are stable, will not catch on fire, you can charge them in about 15 minutes, they have no memory, they can put out a ridiculously high burst of amps, way more than a 1.00 plane could ever use and they are super light. I am waiting on my first set right now. I hope to have them in a couple of weeks, but I have been using Lithium Ion for about 3 years and I love them.
There is a guy out there who makes some really light and high output NiMH packs too. His website is
www.hangtimes.com. NoBS batteries. I have used several of his packs and they are the lightest NiMH packs out there and they hold up great.