If you would like to learn about how to modify a Walkera Helicopter you can check out their website, which will give you all the details. www.walkerasite.com/
The Walkera Dragonfly Helicopter should come with a service manual. If your Walkera Helicopter does not come with a service manual, check out this website here. http://www.ehirobo.com/shop/index.php?cPath=82
You might be able to fine a Walkera Dragonfly Helicopter in a specialty store that deals with RC items. You can definately find this RC helicopter in online stores.
Depending on the type of Walkera RC helicopter one would wish to purchase it should cost around $200 to $240. Walkera RC helicopters can be purchased at stores like Amazon.
The cost for the helicopter can vary on the model you want. I have seen prices as low as $80 for one without radio controls included. Check out http://www.wowhobbies.com/walkera-helicopters.aspx for examples.
There are Walkera helicopters available through a number of locations. The most reliable source for obtaining them would be through the retailer at http://www.walkerasite.com/.
A walkera CB100 cannot charge as it has no legs, your question is invalid.
Walkera dragonfly helicopters may be found in several online hobby stores including rc.buycheapr.com and hobbyking.com. Though there is limited information about in store purchases, I have not seen this particular model in store. However, it appears to be quite popular and may be found easily in hobby stores set up online.
you probably have to modify it first.
you just pull out the old one and put in the new one
A purple helicopter is a helicopter of the color purple. Really?
In the present tense, the verb "modify" is conjugated as follows: I modify You modify He/She/It modifies We modify They modify
Everybody I know says A helicopter.