Blade CP No Lift

[Cipher]

Hi,

I recently purchaced a Blade CP and it worked great. About 2 days after I bought it I installed the aerobatics enhancement kit and the installation seemed to go smoothly but when I tried to fly it I just couldn't get very much lift. With my fully charged battery I could just get enought throttle to hover at full stick, I checked my gear mesh and and its fine (I can hold the pinion and move the main gear a tiny bit) and the pitch looks fine. Any suggestions

James

[Skiddz]

You'll get more lift at a given headspeed from the flat bottomed blades than you will with the symmetricals. You may need to increase the pitch of the blades to generate more lift. You also may need to flatten the pitch to get headspeed up. When I bolted up a set of sym blades, I had to tweak the head a bit to get it to fly. Sorry I don't remember which way I had to go as that was a long time (and several mods) ago.

[Cipher]

Thanks Skiddz! You were right I switched out the symmetricals for the flat bottoms again and it worked as before :D If im not mistaken all I have to do to increase the pitch range is increase the distance on the linkages between the flybar and the blade grips correct?

Thanks again

James

[zooland1]

With the sym blades and stock battery you need to increase your headspeed. Try an 11t pinion or upgrade to lipos.

[schmleff]

why is 2400 too high?

[Cipher]

Yeah I decided that I'm gona stay away from symmetrical blades til I get better at hovering and flying in general, I didn't realize they compromised performance that much :shock: Anyway I crashed her today and bent the shaft so I'm gona go out and grab a new one as well as a LiPo tommorow

Thanks again for everyones help

James

why is 2400 too high?

Not sure what you mean by that

[Skiddz]

2400 RPM is too high for the CP head. There are no thrust bearings in the blade grips and centrifugal force combined with that high headpseed could cause the grips to hang up. E-Flite recommends about 2100 RPM max for this reason.

A larger pinion will increase amp draw on the motor and you'll need to flatten the pitch a bit. Going to a 3S lipo will get the speed up, but I'd put on a 9T pinion to let the motor spin faster and ease up on the current draw.

[davidnyuspri]

Try this reference (http://www.hjnet2000.com/index.php?View=entry&CategoryID=1&EntryID=53)