Set of Four Replacement Tail Props (Qty 4) for Mini Infrared Remote Control Electric Helicopter

I dont know what helicopter these were originally made for, but they are recommended for the s107 for people who are performing a speed modification to the toy. These are not the original tail props for the s107 but if you want the s107 to go faster, you must swap the original s107 tail rotor with one of these and invert the tail rotor engine so that the rotor is facing downward with these propellers attatched. The reason you have to switch it upside down is because the blades are oriented to spin an opposite direction to the originals. These are a bigger propeller and will help give the helicopter more power for foreward movement.Having said that, I must also mention that this mod has been done with the props in the picture with 2 blades. I have heard that some people get shipped a different set of props with 3 blades. I havent recieved or tried those. I wonder if they are just a different variation of this prop with the same blade orientation and output.

You must reverse the prop motor polarity or flip the tail upside down to use these on the S107G. The latter makes the tail prop prone to breakage.I bought these a couple of years ago as an upgrade for a Syma S107. I opted to reverse the tail motor polarity by resoldering the wires on the PCB. They sped up the forward motion of the heli considerably, but reverse motion is hindered. You can see why they are not very efficient when spun the other way by the blade design. They are more like a motor boat prop. They are also rather frail, but I have only broken two so far in a couple of years.I have more than one S107G, so I keep using these on one of them. Even though I cannot move backwards, they do add to the aerobatic fun.

I bought these for my Syma S107 because I was told it would increase it's forward speed. In order for these to work, you have to rotate your tail motor 180 degrees so it faces down. This is because the pitch of these rotors is the opposite of the pitch of the stock Syma S107 tail rotor. However, even when mounted properly, this rotor did not increase the forward speed in any noticable manner and the reverse speed was actually negated entirely, my helicopter would not go backward at all. You could tweak this by bending the fins a little to increase their pitch, this did help with forward speed and reverse for a little while. However, the fins inevitably returned to their original state. I'm a bit disappointed because many S107 owners recommended these rotors. To be fair, I'm not sure this rotor is the official Piccooz prop that S107 modders recommend. If it is then I'd pass on it, it didn't increase the speed of my S107 very much at all.

When I purchased this product, it was as described. I suppose I was one of the lucky ones who did not receive a triple blade prop like some of the other reviews. I purchased this to make my Syma S107 faster. To do that, I turned the tail motor 180 degrees so the prop would work correctly. It did the trick, the helicopter was going a little bit faster. However, I immediately switched back to the standard prop when I tried backing the helicopter from a wall. It just sat there in mid-air. To make the blade go faster, the pitch is greater. The greater the pitch makes for more air pushed, greater force, and therefore, greater speed. However, the blades are curved to add more force. This curving took force from the other side of the prop. So in the end it has 95% of the total surface dedicated to forward movement, and the remaining 5% can try its best to move your helicopter backward. However, the weight of the helicopter is too much to make that 5% work. I'm sure if you lightened the front end of the helicopter you could see better results, but I am sticking with my standard tail prop.

I bought these and tried them out on various Syma helicopters and they didn't work at all. The helicopter became useless and would not move forward or backward. I've watched multiple pieces that say these tail props are the best but it did not pan out.

I bought a "MicroGear Ecoman EC10133, RC Mini Dragonfly" helicopter on Fry's Thanksgiving sale. Heck, I thought that for $10 you can't go wrong (normally they cost $25). I noticed that the kit came with one spare tail propeller.Well, to make a long story short, this is a great and fun toy. Unfortunately, after two crashes, I ran out of tail propellers. I did several searches and could not find spares anywhere. I thought that was it, more trash for the landfield. Out of accident, I found these spare tail props in Amazon. Well, they work great. After replacing the broken one, the heli is back on the air for more Holiday fun.As a tip, use the key words "spare tail blade" when you do a search. You will find tons of hits.Happy flying.

Slight better forward movement. Remeber you will have to flip your tailboom. By flipping the tailboom now your tail rotor is more exposed and i have broke all 4 in a week. I would buy this after you think you have mastered the flying of this copter. I would try reducing the weight on the flybar to get more speed, your copter will be a little more unstable but worth it.

Nothing wrong with the replacement props. Glad they are available. It's just too bad that the toy these are needed for is so fragile! The kids love it, but as a parent I'm getting tired of the toys that break so easily. I have no idea why manufacturers insist on making things that fall apart so easily (other than greed and their expecting you to just throw out and buy more). With these replacement props, you can at least give the original toy a bit of a longer useful lifespan before all of it is too broken up. Don't get me wrong, I'm glad to be able to buy these replacement parts and their cost was reasonable. If you have one of these toys, these parts will be very handy (and necessary!).