diver weights

[helisailor]

i found 2lb diver weights at a dive shop to hold my heli down while i test the engine.works very well.

[helisailor]

these are the soft packs like bean bags.

[TachyonDriver]

Fair enough, but that isn't really what the landing gear is designed for - being held down whilst the heli strains to take off. I know, you're probably not using full throttle anyway, but be careful out there :)
Tach.

[hurleybt]

Make sure you use at least 3 of those things... the rex can lift at least 5 lbs. ... I know... I've tried :)