My buddy and I just got 2 cx2 about a month ago and we are having a blast with them! we are doing so small upgrades, and probably running 4-5 packs a night. My buddy just purchased the Extreme Core and we installed it. After the install we got everything tuned in so that it would fly correctly, and it seems to fly well but has a lot of wobble during a drastic manuver followed by a drastic stop. For example front to back movement rapidly or side to side rapidly the heli doesnt want to come back to a stationary position quikly. It is similiar to a car with worn out shocks... is this a characteristic of these cores? any help would be appreciated

ryan

What is an xtreme core? A blade shaft? battery? skids? blades? flybar? confused.

I think he is talking about the Extreme Core motors.

sorry, that is what the hobby shop called it. It is the longer inner, outer shaft, white fold away blades. It is supposed to be for aggresive manuvers, and it is to avoid blade clack. here is a link to a picture of it.

http://www.bladecx2.com/upgrade_parts3.html

Ryan, The Extreme shaft is not a great piece of engineering. There are numerous posts regarding issues and poor performance with them. Hate to be the bearer of bad news. The Extreme products are not the best. On a great note if you are looking for some great products to enhance flight choose the Xtreme product line. Our fellow collective members USHobbySupply and Boomtown Hobbies carry these products and they are fantastic to say the least. Many of our regulars around here including myself have fully outfitted our helis with the Xtreme products and love them. Sorry I couldn't be of more help regarding the Extreme core.

I second what the stump-man said.

If you are looking for improved control, maneuverability and reduced blade clack without adding weight I would do the following:

1. Soloboss flybar modification.- This will enhance directional control by reducing the heli's tendancy to fight control input and returning to level hover. It will also decrease the likelyhood of blade clack.

2. Level the swashplate so that the heli hovers with the elevator and aileron trims set at center. Make sure the servo arms are horizontal and at a 90 degree angle with the pushrod linkage.- This will ensure the full range of motion of the servo arms is transferred to the swashplate and blades.

3. Get a carbon fiber tailboom (I like Boomtown Hobbies [link=http://shop.boomtownhobbies.com/product.sc?categoryId=9&productId=1]Here[/link])- This will reduce weight and the effects of wind, ground effect and rotor wash.

I also got the extreme core from bladecx2 when I went flying with it the flying characteristics were horrible. I could go faster foward with my stock setup. It ended up tipping over in a turn and crashing pretty bad. I also got their carbon fiber boom and it fell off in flight. I just trashed those parts and went with the stock setup. When I removed the screw above the flybar it seemed to give it pretty good performance.

thanx for all the great information. We have come to the conclusion that the extreme core is satisfactory for manuvers outside with a little bit of wind, but for smooth stable hovering it is not working out. The stock setup is much better as far as stability and steady hovering.

Check Freedom of movement of the flybar; make sure the blades are balanced, and what alot of people forget to do, ( I do ) is check the upperblade tracking and adjust the flybar linkage until true as possible.

Whenever You replace something like that; the tracking ALWAYS has to be redone.

I was getting the same symptoms You expressed when I replaced the upper head until I remembered to adjust the tracking in the uppers. Night and Day difference.

Also, if You have a shortened or modified flybar; lengthen or add weight for added stability. Shorter length combined with lighter weights will really make it more sensitive as You have lessened the gyroscopic affect. Adding weight to a shortened flybar will give You stock characteristics in hover, and calm it down upon uncoordinated manuevers that I like to do; like sliding turns. My modified is only slightly shorter than stock, but the weights are slightly heavier than stock; mainly so I could add c.f. re-inforcement (which works great!) and prevent flybar to lower blade strikes. But since I have the XTREME brand upper head that gives me 5mm more distance between the blades, I don't need to go shorter, so i can have my cake and eat it too. I can hover motionless less than an inch above the floor, and I can haul butt, too.

There is a big difference between 'XTREME' parts and 'EXTREME' parts.

Hope this helps.

Gary

thats for sure