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It makes you heavier, which for a given surface area means you should fall faster, ie fly faster.But it also needs more lift to fly straight and level, which raises your AoA and induces drag. Ballast if it's going to have the effect of making you faster would work on a vertical lift slope not horizontal where you can fight the lift trying to push you up easier. 10-12oz on a mini blade at staggy only seems to increase turbulence resistance and momentum. You gain very little speed and loose a lot of agility. You also increase the risk of damage on landing.Some swear by it, but for sport flying I think it's a bit Emperor's new clothes. I'd agree with building the tube in, but i'd not make getting hold of the ballast my lifes ambition.
i flew my 6oz pitch bitch in 60 plus no issues at all.nice and slippery. i'm not sure in high winds you want to fly down the same glidepath.the winds higher, it's coming up the slope faster, you want to fly a steeper path to have the same visual result to the ground.in a purely flat field flight more weight will only cause a higher AoA to gain the required lift. a lighter plane with the same thrust and drag will fly faster.Slope is tricker, it's all about wing loading and drag, not just weight because the winds coming at you from a funny angle. you need a steep glidepath, but if you're slippery enough you can do this without resorting to lugging weight around. i've yet to put weight in on an average day and find the glider sooooo much better to fly. it's just fatter.
Settings for Yoyo:RCRCM Sunbird Set-up Guide CG at rear edge of joiner – approx 67mm from leading edge to start. Make the permanent weight to 80mm, with four removable weights giving you 67, 71, 75 and 78 as options. Many are now flying 78 and rear. Consider elevator throws may need dropping to 8mm each way when at the rearmost points above. Aileron (measured at tip)Up 7mmDown 5mm Aileron (Camber) - see flap notesAileron (CROW) – up 5mmAileron (Snapflap mix) – see flap notesAileron (Reflex) – see flap notes Flap (measured at root) Flap/ Aileron mix – up 8mm, down 7mmFlap (Camber) – 3mm down worked out along the aileronFlap (CROW) – 70 degreesFlap (Snapflap mix) – 3mm up/down worked out along the aileronFlap (Reflex) – up 1mm worked out along the aileron Rudder 15mm left/ right at base Elevator (measured at trailing edge near root)Up/ Down 10mmCROW – down 7mm NB Snapflap mix uses wing trailing edge moving DOWN with UP elevator and UP with DOWN elevator.