Here's a real cheap one!!
www.amazon.co.uk/Syma-S107-Controlled-Helicopter-Gyroscopic/dp/B004P1IS72/ref=sr_1_4?ie=UTF8&qid=1318522111&sr=8-4Two blades, so it's called a coaxial.
Bees Knees of coaxials:
www.kingslynnmodelshop.co.uk/Helicopters%20&%20Spares_E-Flite%20Blade%20mCX2%20&%20Force%20Combat%20Heli's/c33_153/p1782/E-Flite_Blade_mCX2_RTF/product_info.html
The difference? Both take a crash pretty well. The second one has batteries that come off and can be replaced. 4 Batteries will keep you flying for half an hour without charging up, whereas the first one will fly about 7 or 8 minutes and have to be charged 'cos the battery doesn't come out.
There MUST be a fix for this. Literally take the canopy off and take out the battery and somehow fit the lead into removable ones on a cradle.
When you've made your choice, this is how to get going without a crash. The point is to learn without any crashing or banging the heli which is not good for it. Patience is the thing and I'll try and explain so that you are not taking any chances on a crash. Try to avoid all crashes and don't get flash!!!!!
1: Read the book.
2. Charge the battery fully.
3. Find an open space in the house or garage.
4. The throttle is the stick on the left - rev it slowly but don't take it full up. Watch the heli and stop raising when the heli starts to look as though it's going to lift. Then cut the revs.
5. Learn where this point is. (The point of take off) If you go past it slightly, the heli may topple sideways and damage the blades on the floor.
If the heli is turning left or right on the floor adjust the left/right trim or 'yaw' until it stays pretty straight on the floor.
It won't be perfect so don't get OCD about it.
6. Once you have learned where the take off point is, get there again and then fairly quickly but evenly raise it more and the heli should 'jump' into the air. Don't go full on or else it will hit the ceiling and break. Get it to face height and straight down. Take a note of any drift that you see. It won't stay perfectly still and will drift one way or the other or even turn on its axis. Work out if you can, what it is doing exactly in each quick hover. and then let it down again.
7. Homework ........ get it into the air until it looks more realistic , get it to hover and let it wander for now and try to keep it there for as long as you can, then ease the throttle down slowly so that it does a really slow descent. When it reaches the floor, you'll probably find that the blowback from the floor will stop it landing so cut the engine to nearly off there and the heli will do a good landing.
This is what many people miss out. They are hell bent on flying and don't learn the control first and so they fly all over the place and constantly crash, normally damaging the heli in the end, so you're trying to fly a 'bent' heli which just doesn't work properly and starts 'shuddering or shaking. (Even if it's an eighth of an inch bent somewhere on the pillar, in real life, that a bad bend!!)
One useful tip: If you are going to hit a wall or crash and can't stop it it, cut the power immediately (hopefully before it hits the wall). It will save your heli. They crash mostly without harm if the blades aren't spinning. Most damage is caused by the blades hitting something and sending the shock further down.
If you flew so fast that it bent the spindle, then you were just flying too fast and out of control: you asked for it!!!
Immediate cutting of the power and simply letting it drop to the floor normally saves its life unless you're a long way up in the air.
Answer, don't push yourself too hard.
Excellent site for info:
www.myrcguides.com/Ian